Merge pull request #2542 from vector-im/feature/bma/view_bindings

View bindings

CHANGES.md

@@ -23,7 +23,7 @@ Test:
  -
 
 Other changes:
- -
+ - Migrate to ViewBindings (#1072)
 
 Changes in Element 1.0.13 (2020-12-18)
 ===================================================

attachment-viewer/build.gradle

@@ -16,7 +16,6 @@
 
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
 
 buildscript {
     repositories {
@@ -55,6 +54,10 @@ android {
     kotlinOptions {
         jvmTarget = '1.8'
     }
+
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {

attachment-viewer/src/main/java/im/vector/lib/attachmentviewer/AnimatedImageViewHolder.kt

@@ -17,19 +17,17 @@
 package im.vector.lib.attachmentviewer
 
 import android.view.View
-import android.widget.ImageView
-import android.widget.ProgressBar
+import im.vector.lib.attachmentviewer.databinding.ItemAnimatedImageAttachmentBinding
 
 class AnimatedImageViewHolder constructor(itemView: View) :
         BaseViewHolder(itemView) {
 
-    val touchImageView: ImageView = itemView.findViewById(R.id.imageView)
-    val imageLoaderProgress: ProgressBar = itemView.findViewById(R.id.imageLoaderProgress)
+    val views = ItemAnimatedImageAttachmentBinding.bind(itemView)
 
-    internal val target = DefaultImageLoaderTarget(this, this.touchImageView)
+    internal val target = DefaultImageLoaderTarget(this, views.imageView)
 
     override fun onRecycled() {
         super.onRecycled()
-        touchImageView.setImageDrawable(null)
+        views.imageView.setImageDrawable(null)
     }
 }

attachment-viewer/src/main/java/im/vector/lib/attachmentviewer/AttachmentViewerActivity.kt

@@ -33,7 +33,8 @@ import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
 import androidx.transition.TransitionManager
 import androidx.viewpager2.widget.ViewPager2
-import kotlinx.android.synthetic.main.activity_attachment_viewer.*
+import im.vector.lib.attachmentviewer.databinding.ActivityAttachmentViewerBinding
+
 import java.lang.ref.WeakReference
 import kotlin.math.abs
 
@@ -50,12 +51,14 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
     private var overlayView: View? = null
         set(value) {
             if (value == overlayView) return
-            overlayView?.let { rootContainer.removeView(it) }
-            rootContainer.addView(value)
+            overlayView?.let { views.rootContainer.removeView(it) }
+            views.rootContainer.addView(value)
             value?.updatePadding(top = topInset, bottom = bottomInset)
             field = value
         }
 
+    private lateinit var views: ActivityAttachmentViewerBinding
+
     private lateinit var swipeDismissHandler: SwipeToDismissHandler
     private lateinit var directionDetector: SwipeDirectionDetector
     private lateinit var scaleDetector: ScaleGestureDetector
@@ -95,17 +98,17 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
         window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)
         window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION, WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION)
 
-        setContentView(R.layout.activity_attachment_viewer)
-        attachmentPager.orientation = ViewPager2.ORIENTATION_HORIZONTAL
+        views = ActivityAttachmentViewerBinding.inflate(layoutInflater)
+        setContentView(views.root)
+        views.attachmentPager.orientation = ViewPager2.ORIENTATION_HORIZONTAL
         attachmentsAdapter = AttachmentsAdapter()
-        attachmentPager.adapter = attachmentsAdapter
-        imageTransitionView = transitionImageView
-        transitionImageContainer = findViewById(R.id.transitionImageContainer)
-        pager2 = attachmentPager
+        views.attachmentPager.adapter = attachmentsAdapter
+        imageTransitionView = views.transitionImageView
+        pager2 = views.attachmentPager
         directionDetector = createSwipeDirectionDetector()
         gestureDetector = createGestureDetector()
 
-        attachmentPager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
+        views.attachmentPager.registerOnPageChangeCallback(object : ViewPager2.OnPageChangeCallback() {
             override fun onPageScrollStateChanged(state: Int) {
                 isImagePagerIdle = state == ViewPager2.SCROLL_STATE_IDLE
             }
@@ -116,12 +119,12 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
         })
 
         swipeDismissHandler = createSwipeToDismissHandler()
-        rootContainer.setOnTouchListener(swipeDismissHandler)
-        rootContainer.viewTreeObserver.addOnGlobalLayoutListener { swipeDismissHandler.translationLimit = dismissContainer.height / 4 }
+        views.rootContainer.setOnTouchListener(swipeDismissHandler)
+        views.rootContainer.viewTreeObserver.addOnGlobalLayoutListener { swipeDismissHandler.translationLimit = views.dismissContainer.height / 4 }
 
         scaleDetector = createScaleGestureDetector()
 
-        ViewCompat.setOnApplyWindowInsetsListener(rootContainer) { _, insets ->
+        ViewCompat.setOnApplyWindowInsetsListener(views.rootContainer) { _, insets ->
             overlayView?.updatePadding(top = insets.systemWindowInsetTop, bottom = insets.systemWindowInsetBottom)
             topInset = insets.systemWindowInsetTop
             bottomInset = insets.systemWindowInsetBottom
@@ -170,7 +173,7 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
         if (swipeDirection == null && (scaleDetector.isInProgress || ev.pointerCount > 1 || wasScaled)) {
             wasScaled = true
 //            Log.v("ATTACHEMENTS", "dispatch to pager")
-            return attachmentPager.dispatchTouchEvent(ev)
+            return views.attachmentPager.dispatchTouchEvent(ev)
         }
 
         // Log.v("ATTACHEMENTS", "is current item scaled ${isScaled()}")
@@ -196,16 +199,16 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
     private fun handleEventActionDown(event: MotionEvent) {
         swipeDirection = null
         wasScaled = false
-        attachmentPager.dispatchTouchEvent(event)
+        views.attachmentPager.dispatchTouchEvent(event)
 
-        swipeDismissHandler.onTouch(rootContainer, event)
+        swipeDismissHandler.onTouch(views.rootContainer, event)
         isOverlayWasClicked = dispatchOverlayTouch(event)
     }
 
     private fun handleEventActionUp(event: MotionEvent) {
 //        wasDoubleTapped = false
-        swipeDismissHandler.onTouch(rootContainer, event)
-        attachmentPager.dispatchTouchEvent(event)
+        swipeDismissHandler.onTouch(views.rootContainer, event)
+        views.attachmentPager.dispatchTouchEvent(event)
         isOverlayWasClicked = dispatchOverlayTouch(event)
     }
 
@@ -220,12 +223,12 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
     private fun toggleOverlayViewVisibility() {
         if (systemUiVisibility) {
             // we hide
-            TransitionManager.beginDelayedTransition(rootContainer)
+            TransitionManager.beginDelayedTransition(views.rootContainer)
             hideSystemUI()
             overlayView?.isVisible = false
         } else {
             // we show
-            TransitionManager.beginDelayedTransition(rootContainer)
+            TransitionManager.beginDelayedTransition(views.rootContainer)
             showSystemUI()
             overlayView?.isVisible = true
         }
@@ -238,11 +241,11 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
         return when (swipeDirection) {
             SwipeDirection.Up, SwipeDirection.Down    -> {
                 if (isSwipeToDismissAllowed && !wasScaled && isImagePagerIdle) {
-                    swipeDismissHandler.onTouch(rootContainer, event)
+                    swipeDismissHandler.onTouch(views.rootContainer, event)
                 } else true
             }
             SwipeDirection.Left, SwipeDirection.Right -> {
-                attachmentPager.dispatchTouchEvent(event)
+                views.attachmentPager.dispatchTouchEvent(event)
             }
             else                                      -> true
         }
@@ -250,8 +253,8 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
 
     private fun handleSwipeViewMove(translationY: Float, translationLimit: Int) {
         val alpha = calculateTranslationAlpha(translationY, translationLimit)
-        backgroundView.alpha = alpha
-        dismissContainer.alpha = alpha
+        views.backgroundView.alpha = alpha
+        views.dismissContainer.alpha = alpha
         overlayView?.alpha = alpha
     }
 
@@ -265,7 +268,7 @@ abstract class AttachmentViewerActivity : AppCompatActivity(), AttachmentEventLi
 
     private fun createSwipeToDismissHandler()
             : SwipeToDismissHandler = SwipeToDismissHandler(
-            swipeView = dismissContainer,
+            swipeView = views.dismissContainer,
             shouldAnimateDismiss = { shouldAnimateDismiss() },
             onDismiss = { animateClose() },
             onSwipeViewMove = ::handleSwipeViewMove)

attachment-viewer/src/main/java/im/vector/lib/attachmentviewer/AttachmentsAdapter.kt

@@ -98,7 +98,7 @@ class AttachmentsAdapter : RecyclerView.Adapter<BaseViewHolder>() {
     fun isScaled(position: Int): Boolean {
         val holder = recyclerView?.findViewHolderForAdapterPosition(position)
         if (holder is ZoomableImageViewHolder) {
-            return holder.touchImageView.attacher.scale > 1f
+            return holder.views.touchImageView.attacher.scale > 1f
         }
         return false
     }

attachment-viewer/src/main/java/im/vector/lib/attachmentviewer/ImageLoaderTarget.kt

@@ -44,29 +44,29 @@ internal class DefaultImageLoaderTarget(val holder: AnimatedImageViewHolder, pri
 
     override fun onResourceLoading(uid: String, placeholder: Drawable?) {
         if (holder.boundResourceUid != uid) return
-        holder.imageLoaderProgress.isVisible = true
+        holder.views.imageLoaderProgress.isVisible = true
     }
 
     override fun onLoadFailed(uid: String, errorDrawable: Drawable?) {
         if (holder.boundResourceUid != uid) return
-        holder.imageLoaderProgress.isVisible = false
-        holder.touchImageView.setImageDrawable(errorDrawable)
+        holder.views.imageLoaderProgress.isVisible = false
+        holder.views.imageView.setImageDrawable(errorDrawable)
     }
 
     override fun onResourceCleared(uid: String, placeholder: Drawable?) {
         if (holder.boundResourceUid != uid) return
-        holder.touchImageView.setImageDrawable(placeholder)
+        holder.views.imageView.setImageDrawable(placeholder)
     }
 
     override fun onResourceReady(uid: String, resource: Drawable) {
         if (holder.boundResourceUid != uid) return
-        holder.imageLoaderProgress.isVisible = false
+        holder.views.imageLoaderProgress.isVisible = false
         // Glide mess up the view size :/
-        holder.touchImageView.updateLayoutParams {
+        holder.views.imageView.updateLayoutParams {
             width = LinearLayout.LayoutParams.MATCH_PARENT
             height = LinearLayout.LayoutParams.MATCH_PARENT
         }
-        holder.touchImageView.setImageDrawable(resource)
+        holder.views.imageView.setImageDrawable(resource)
         if (resource is Animatable) {
             resource.start()
         }
@@ -77,30 +77,30 @@ internal class DefaultImageLoaderTarget(val holder: AnimatedImageViewHolder, pri
 
         override fun onResourceLoading(uid: String, placeholder: Drawable?) {
             if (holder.boundResourceUid != uid) return
-            holder.imageLoaderProgress.isVisible = true
-            holder.touchImageView.setImageDrawable(placeholder)
+            holder.views.imageLoaderProgress.isVisible = true
+            holder.views.touchImageView.setImageDrawable(placeholder)
         }
 
         override fun onLoadFailed(uid: String, errorDrawable: Drawable?) {
             if (holder.boundResourceUid != uid) return
-            holder.imageLoaderProgress.isVisible = false
-            holder.touchImageView.setImageDrawable(errorDrawable)
+            holder.views.imageLoaderProgress.isVisible = false
+            holder.views.touchImageView.setImageDrawable(errorDrawable)
         }
 
         override fun onResourceCleared(uid: String, placeholder: Drawable?) {
             if (holder.boundResourceUid != uid) return
-            holder.touchImageView.setImageDrawable(placeholder)
+            holder.views.touchImageView.setImageDrawable(placeholder)
         }
 
         override fun onResourceReady(uid: String, resource: Drawable) {
             if (holder.boundResourceUid != uid) return
-            holder.imageLoaderProgress.isVisible = false
+            holder.views.imageLoaderProgress.isVisible = false
             // Glide mess up the view size :/
-            holder.touchImageView.updateLayoutParams {
+            holder.views.touchImageView.updateLayoutParams {
                 width = LinearLayout.LayoutParams.MATCH_PARENT
                 height = LinearLayout.LayoutParams.MATCH_PARENT
             }
-            holder.touchImageView.setImageDrawable(resource)
+            holder.views.touchImageView.setImageDrawable(resource)
         }
     }
 }

attachment-viewer/src/main/java/im/vector/lib/attachmentviewer/VideoLoaderTarget.kt

@@ -49,19 +49,19 @@ internal class DefaultVideoLoaderTarget(val holder: VideoViewHolder, private val
 
     override fun onThumbnailResourceCleared(uid: String, placeholder: Drawable?) {
         if (holder.boundResourceUid != uid) return
-        holder.thumbnailImage.setImageDrawable(placeholder)
+        holder.views.videoThumbnailImage.setImageDrawable(placeholder)
     }
 
     override fun onThumbnailResourceReady(uid: String, resource: Drawable) {
         if (holder.boundResourceUid != uid) return
-        holder.thumbnailImage.setImageDrawable(resource)
+        holder.views.videoThumbnailImage.setImageDrawable(resource)
     }
 
     override fun onVideoFileLoading(uid: String) {
         if (holder.boundResourceUid != uid) return
-        holder.thumbnailImage.isVisible = true
-        holder.loaderProgressBar.isVisible = true
-        holder.videoView.isVisible = false
+        holder.views.videoThumbnailImage.isVisible = true
+        holder.views.videoLoaderProgress.isVisible = true
+        holder.views.videoView.isVisible = false
     }
 
     override fun onVideoFileLoadFailed(uid: String) {
@@ -82,8 +82,8 @@ internal class DefaultVideoLoaderTarget(val holder: VideoViewHolder, private val
     }
 
     private fun arrangeForVideoReady() {
-        holder.thumbnailImage.isVisible = false
-        holder.loaderProgressBar.isVisible = false
-        holder.videoView.isVisible = true
+        holder.views.videoThumbnailImage.isVisible = false
+        holder.views.videoLoaderProgress.isVisible = false
+        holder.views.videoView.isVisible = true
     }
 }

attachment-viewer/src/main/java/im/vector/lib/attachmentviewer/VideoViewHolder.kt

@@ -18,11 +18,8 @@ package im.vector.lib.attachmentviewer
 
 import android.util.Log
 import android.view.View
-import android.widget.ImageView
-import android.widget.ProgressBar
-import android.widget.TextView
-import android.widget.VideoView
 import androidx.core.view.isVisible
+import im.vector.lib.attachmentviewer.databinding.ItemVideoAttachmentBinding
 import io.reactivex.Observable
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.disposables.Disposable
@@ -44,13 +41,9 @@ class VideoViewHolder constructor(itemView: View) :
 
     var eventListener: WeakReference<AttachmentEventListener>? = null
 
-    val thumbnailImage: ImageView = itemView.findViewById(R.id.videoThumbnailImage)
-    val videoView: VideoView = itemView.findViewById(R.id.videoView)
-    val loaderProgressBar: ProgressBar = itemView.findViewById(R.id.videoLoaderProgress)
-    val videoControlIcon: ImageView = itemView.findViewById(R.id.videoControlIcon)
-    val errorTextView: TextView = itemView.findViewById(R.id.videoMediaViewerErrorView)
+    val views = ItemVideoAttachmentBinding.bind(itemView)
 
-    internal val target = DefaultVideoLoaderTarget(this, thumbnailImage)
+    internal val target = DefaultVideoLoaderTarget(this, views.videoThumbnailImage)
 
     override fun onRecycled() {
         super.onRecycled()
@@ -77,12 +70,12 @@ class VideoViewHolder constructor(itemView: View) :
     }
 
     override fun entersBackground() {
-        if (videoView.isPlaying) {
-            progress = videoView.currentPosition
+        if (views.videoView.isPlaying) {
+            progress = views.videoView.currentPosition
             progressDisposable?.dispose()
             progressDisposable = null
-            videoView.stopPlayback()
-            videoView.pause()
+            views.videoView.stopPlayback()
+            views.videoView.pause()
         }
     }
 
@@ -92,9 +85,9 @@ class VideoViewHolder constructor(itemView: View) :
 
     override fun onSelected(selected: Boolean) {
         if (!selected) {
-            if (videoView.isPlaying) {
-                progress = videoView.currentPosition
-                videoView.stopPlayback()
+            if (views.videoView.isPlaying) {
+                progress = views.videoView.currentPosition
+                views.videoView.stopPlayback()
             } else {
                 progress = 0
             }
@@ -109,34 +102,34 @@ class VideoViewHolder constructor(itemView: View) :
     }
 
     private fun startPlaying() {
-        thumbnailImage.isVisible = false
-        loaderProgressBar.isVisible = false
-        videoView.isVisible = true
+        views.videoThumbnailImage.isVisible = false
+        views.videoLoaderProgress.isVisible = false
+        views.videoView.isVisible = true
 
-        videoView.setOnPreparedListener {
+        views.videoView.setOnPreparedListener {
             progressDisposable?.dispose()
             progressDisposable = Observable.interval(100, TimeUnit.MILLISECONDS)
                     .timeInterval()
                     .observeOn(AndroidSchedulers.mainThread())
                     .subscribe {
-                        val duration = videoView.duration
-                        val progress = videoView.currentPosition
-                        val isPlaying = videoView.isPlaying
+                        val duration = views.videoView.duration
+                        val progress = views.videoView.currentPosition
+                        val isPlaying = views.videoView.isPlaying
 //                        Log.v("FOO", "isPlaying $isPlaying $progress/$duration")
                         eventListener?.get()?.onEvent(AttachmentEvents.VideoEvent(isPlaying, progress, duration))
                     }
         }
         try {
-            videoView.setVideoPath(mVideoPath)
+            views.videoView.setVideoPath(mVideoPath)
         } catch (failure: Throwable) {
             // Couldn't open
             Log.v(VideoViewHolder::class.java.name, "Failed to start video")
         }
 
         if (!wasPaused) {
-            videoView.start()
+            views.videoView.start()
             if (progress > 0) {
-                videoView.seekTo(progress)
+                views.videoView.seekTo(progress)
             }
         }
     }
@@ -146,17 +139,17 @@ class VideoViewHolder constructor(itemView: View) :
         when (commands) {
             AttachmentCommands.StartVideo -> {
                 wasPaused = false
-                videoView.start()
+                views.videoView.start()
             }
             AttachmentCommands.PauseVideo -> {
                 wasPaused = true
-                videoView.pause()
+                views.videoView.pause()
             }
             is AttachmentCommands.SeekTo  -> {
-                val duration = videoView.duration
+                val duration = views.videoView.duration
                 if (duration > 0) {
                     val seekDuration = duration * (commands.percentProgress / 100f)
-                    videoView.seekTo(seekDuration.toInt())
+                    views.videoView.seekTo(seekDuration.toInt())
                 }
             }
         }

attachment-viewer/src/main/java/im/vector/lib/attachmentviewer/ZoomableImageViewHolder.kt

@@ -17,31 +17,29 @@
 package im.vector.lib.attachmentviewer
 
 import android.view.View
-import android.widget.ProgressBar
-import com.github.chrisbanes.photoview.PhotoView
+import im.vector.lib.attachmentviewer.databinding.ItemImageAttachmentBinding
 
 class ZoomableImageViewHolder constructor(itemView: View) :
         BaseViewHolder(itemView) {
 
-    val touchImageView: PhotoView = itemView.findViewById(R.id.touchImageView)
-    val imageLoaderProgress: ProgressBar = itemView.findViewById(R.id.imageLoaderProgress)
+    val views = ItemImageAttachmentBinding.bind(itemView)
 
     init {
-        touchImageView.setAllowParentInterceptOnEdge(false)
-        touchImageView.setOnScaleChangeListener { scaleFactor, _, _ ->
+        views.touchImageView.setAllowParentInterceptOnEdge(false)
+        views.touchImageView.setOnScaleChangeListener { scaleFactor, _, _ ->
             // Log.v("ATTACHEMENTS", "scaleFactor $scaleFactor")
             // It's a bit annoying but when you pitch down the scaling
             // is not exactly one :/
-            touchImageView.setAllowParentInterceptOnEdge(scaleFactor <= 1.0008f)
+            views.touchImageView.setAllowParentInterceptOnEdge(scaleFactor <= 1.0008f)
         }
-        touchImageView.setScale(1.0f, true)
-        touchImageView.setAllowParentInterceptOnEdge(true)
+        views.touchImageView.setScale(1.0f, true)
+        views.touchImageView.setAllowParentInterceptOnEdge(true)
     }
 
-    internal val target = DefaultImageLoaderTarget.ZoomableImageTarget(this, touchImageView)
+    internal val target = DefaultImageLoaderTarget.ZoomableImageTarget(this, views.touchImageView)
 
     override fun onRecycled() {
         super.onRecycled()
-        touchImageView.setImageDrawable(null)
+        views.touchImageView.setImageDrawable(null)
     }
 }

matrix-sdk-android/build.gradle

@@ -1,7 +1,7 @@
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-kapt'
-apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-parcelize'
 apply plugin: 'realm-android'
 
 buildscript {
@@ -13,10 +13,6 @@ buildscript {
     }
 }
 
-androidExtensions {
-    experimental = true
-}
-
 android {
     compileSdkVersion 29
     testOptions.unitTests.includeAndroidResources = true

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/auth/data/SsoIdentityProvider.kt

@@ -19,7 +19,7 @@ package org.matrix.android.sdk.api.auth.data
 import android.os.Parcelable
 import com.squareup.moshi.Json
 import com.squareup.moshi.JsonClass
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 
 @JsonClass(generateAdapter = true)
 @Parcelize

matrix-sdk-android/src/main/java/org/matrix/android/sdk/api/session/content/ContentAttachmentData.kt

@@ -20,7 +20,7 @@ import android.net.Uri
 import android.os.Parcelable
 import androidx.exifinterface.media.ExifInterface
 import com.squareup.moshi.JsonClass
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 import org.matrix.android.sdk.api.util.MimeTypes.normalizeMimeType
 
 @Parcelize

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/auth/registration/LocalizedFlowDataLoginTerms.kt

@@ -17,7 +17,7 @@
 package org.matrix.android.sdk.internal.auth.registration
 
 import android.os.Parcelable
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 
 /**
  * This class represent a localized privacy policy for registration Flow.

matrix-sdk-android/src/main/java/org/matrix/android/sdk/internal/crypto/attachments/ElementToDecrypt.kt

@@ -18,7 +18,7 @@ package org.matrix.android.sdk.internal.crypto.attachments
 
 import android.os.Parcelable
 import org.matrix.android.sdk.internal.crypto.model.rest.EncryptedFileInfo
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 
 fun EncryptedFileInfo.toElementToDecrypt(): ElementToDecrypt? {
     // Check the validity of some fields

multipicker/build.gradle

@@ -16,7 +16,7 @@
 
 apply plugin: 'com.android.library'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-parcelize'
 
 android {
     compileSdkVersion 29

tools/check/forbidden_strings_in_code.txt

@@ -109,9 +109,6 @@ import retrofit2\.adapter\.rxjava\.HttpException
 ### This is generally not necessary, no need to reset the padding if there is no drawable
 setCompoundDrawablePadding\(0\)
 
-### Deprecated use class form SDK API 26
-ButterKnife\.findById\(
-
 # Change thread with Rx
 # DISABLED
 #runOnUiThread
@@ -175,3 +172,6 @@ getSystemService\(Context
 
 ### Use DefaultSharedPreferences.getInstance() instead for better performance
 PreferenceManager\.getDefaultSharedPreferences==2
+
+### Use ViewBindings
+# findViewById

tools/templates/ElementFeature/root/src/app_package/Fragment.kt.ftl

@@ -3,7 +3,7 @@ package ${escapeKotlinIdentifiers(packageName)}
 import android.os.Bundle
 <#if createFragmentArgs>
 import android.os.Parcelable
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 import com.airbnb.mvrx.args
 </#if>
 import android.view.View
@@ -36,8 +36,8 @@ class ${fragmentClass} @Inject constructor(
     }
 
     override fun onDestroyView() {
-        super.onDestroyView()
 		// Clear your view, unsubscribe...
+        super.onDestroyView()
     }
 
     override fun invalidate() = withState(viewModel) { state ->

vector/build.gradle

@@ -3,17 +3,13 @@ import com.android.build.OutputFile
 apply plugin: 'com.android.application'
 apply plugin: 'com.google.android.gms.oss-licenses-plugin'
 apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-parcelize'
 apply plugin: 'kotlin-kapt'
 
 kapt {
     correctErrorTypes = true
 }
 
-androidExtensions {
-    experimental = true
-}
-
 // Note: 2 digits max for each value
 ext.versionMajor = 1
 ext.versionMinor = 0
@@ -280,6 +276,10 @@ android {
             java.srcDirs += "src/sharedTest/java"
         }
     }
+
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
@@ -386,10 +386,6 @@ dependencies {
 
     implementation 'com.otaliastudios:autocomplete:1.1.0'
 
-    // Butterknife
-    implementation 'com.jakewharton:butterknife:10.2.0'
-    kapt 'com.jakewharton:butterknife-compiler:10.2.0'
-
     // Shake detection
     implementation 'com.squareup:seismic:1.0.2'
 

vector/src/androidTest/java/im/vector/app/ui/UiAllScreensSanityTest.kt

@@ -76,7 +76,9 @@ class UiAllScreensSanityTest {
 
     private val uiTestBase = UiTestBase()
 
-    // Last passing: 2020-11-09
+    // Last passing:
+    // 2020-11-09
+    // 2020-12-16 After ViewBinding huge change
     @Test
     fun allScreensTest() {
         // Create an account

vector/src/debug/java/im/vector/app/features/debug/DebugMaterialThemeActivity.kt

@@ -24,26 +24,27 @@ import com.google.android.material.bottomsheet.BottomSheetDialogFragment
 import com.google.android.material.snackbar.Snackbar
 import im.vector.app.R
 import im.vector.app.core.utils.toast
-import kotlinx.android.synthetic.debug.activity_test_material_theme.*
+import im.vector.app.databinding.ActivityTestMaterialThemeBinding
 
 // Rendering is not the same with VectorBaseActivity
 abstract class DebugMaterialThemeActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_test_material_theme)
+        val views = ActivityTestMaterialThemeBinding.inflate(layoutInflater)
+        setContentView(views.root)
 
-        debugShowSnackbar.setOnClickListener {
-            Snackbar.make(debugMaterialCoordinator, "Snackbar!", Snackbar.LENGTH_SHORT)
+        views.debugShowSnackbar.setOnClickListener {
+            Snackbar.make(views.coordinatorLayout, "Snackbar!", Snackbar.LENGTH_SHORT)
                     .setAction("Action") { }
                     .show()
         }
 
-        debugShowToast.setOnClickListener {
+        views.debugShowToast.setOnClickListener {
             toast("Toast")
         }
 
-        debugShowDialog.setOnClickListener {
+        views.debugShowDialog.setOnClickListener {
             AlertDialog.Builder(this)
                     .setMessage("Dialog content")
                     .setIcon(R.drawable.ic_settings_x)
@@ -53,7 +54,7 @@ abstract class DebugMaterialThemeActivity : AppCompatActivity() {
                     .show()
         }
 
-        debugShowBottomSheet.setOnClickListener {
+        views.debugShowBottomSheet.setOnClickListener {
             BottomSheetDialogFragment().show(supportFragmentManager, "TAG")
         }
     }

vector/src/debug/java/im/vector/app/features/debug/DebugMenuActivity.kt

@@ -24,7 +24,6 @@ import android.os.Build
 import androidx.core.app.NotificationCompat
 import androidx.core.app.Person
 import androidx.core.content.getSystemService
-import butterknife.OnClick
 import im.vector.app.R
 import im.vector.app.core.di.ActiveSessionHolder
 import im.vector.app.core.di.ScreenComponent
@@ -35,16 +34,17 @@ import im.vector.app.core.utils.PERMISSION_REQUEST_CODE_LAUNCH_CAMERA
 import im.vector.app.core.utils.allGranted
 import im.vector.app.core.utils.checkPermissions
 import im.vector.app.core.utils.toast
+import im.vector.app.databinding.ActivityDebugMenuBinding
 import im.vector.app.features.debug.sas.DebugSasEmojiActivity
 import im.vector.app.features.qrcode.QrCodeScannerActivity
 import org.matrix.android.sdk.internal.crypto.verification.qrcode.toQrCodeData
-import kotlinx.android.synthetic.debug.activity_debug_menu.*
+
 import timber.log.Timber
 import javax.inject.Inject
 
-class DebugMenuActivity : VectorBaseActivity() {
+class DebugMenuActivity : VectorBaseActivity<ActivityDebugMenuBinding>() {
 
-    override fun getLayoutRes() = R.layout.activity_debug_menu
+    override fun getBinding() = ActivityDebugMenuBinding.inflate(layoutInflater)
 
     @Inject
     lateinit var activeSessionHolder: ActiveSessionHolder
@@ -66,24 +66,32 @@ class DebugMenuActivity : VectorBaseActivity() {
         val string = buffer.toString(Charsets.ISO_8859_1)
 
         renderQrCode(string)
+        setupViews()
+    }
+
+    private fun setupViews() {
+        views.debugTestTextViewLink.setOnClickListener { testTextViewLink() }
+        views.debugShowSasEmoji.setOnClickListener { showSasEmoji() }
+        views.debugTestNotification.setOnClickListener { testNotification() }
+        views.debugTestMaterialThemeLight.setOnClickListener { testMaterialThemeLight() }
+        views.debugTestMaterialThemeDark.setOnClickListener { testMaterialThemeDark() }
+        views.debugTestCrash.setOnClickListener { testCrash() }
+        views.debugScanQrCode.setOnClickListener { scanQRCode() }
     }
 
     private fun renderQrCode(text: String) {
-        debug_qr_code.setData(text)
+        views.debugQrCode.setData(text)
     }
 
-    @OnClick(R.id.debug_test_text_view_link)
-    fun testTextViewLink() {
+    private fun testTextViewLink() {
         startActivity(Intent(this, TestLinkifyActivity::class.java))
     }
 
-    @OnClick(R.id.debug_show_sas_emoji)
-    fun showSasEmoji() {
+    private fun showSasEmoji() {
         startActivity(Intent(this, DebugSasEmojiActivity::class.java))
     }
 
-    @OnClick(R.id.debug_test_notification)
-    fun testNotification() {
+    private fun testNotification() {
         val notificationManager = getSystemService<NotificationManager>()!!
 
         // Create channel first
@@ -166,23 +174,19 @@ class DebugMenuActivity : VectorBaseActivity() {
         )
     }
 
-    @OnClick(R.id.debug_test_material_theme_light)
-    fun testMaterialThemeLight() {
+    private fun testMaterialThemeLight() {
         startActivity(Intent(this, DebugMaterialThemeLightActivity::class.java))
     }
 
-    @OnClick(R.id.debug_test_material_theme_dark)
-    fun testMaterialThemeDark() {
+    private fun testMaterialThemeDark() {
         startActivity(Intent(this, DebugMaterialThemeDarkActivity::class.java))
     }
 
-    @OnClick(R.id.debug_test_crash)
-    fun testCrash() {
+    private fun testCrash() {
         throw RuntimeException("Application crashed from user demand")
     }
 
-    @OnClick(R.id.debug_scan_qr_code)
-    fun scanQRCode() {
+    private fun scanQRCode() {
         if (checkPermissions(PERMISSIONS_FOR_TAKING_PHOTO, this, PERMISSION_REQUEST_CODE_LAUNCH_CAMERA)) {
             doScanQRCode()
         }

vector/src/debug/java/im/vector/app/features/debug/TestLinkifyActivity.kt

@@ -19,28 +19,18 @@ package im.vector.app.features.debug
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.ViewGroup
-import android.widget.LinearLayout
-import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
-import androidx.coordinatorlayout.widget.CoordinatorLayout
-import butterknife.BindView
-import butterknife.ButterKnife
 import im.vector.app.R
+import im.vector.app.databinding.ActivityTestLinkifyBinding
+import im.vector.app.databinding.ItemTestLinkifyBinding
 
 class TestLinkifyActivity : AppCompatActivity() {
 
-    @BindView(R.id.test_linkify_content_view)
-    lateinit var scrollContent: LinearLayout
-
-    @BindView(R.id.test_linkify_coordinator)
-    lateinit var coordinatorLayout: CoordinatorLayout
-
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_test_linkify)
-        ButterKnife.bind(this)
-
-        scrollContent.removeAllViews()
+        val views = ActivityTestLinkifyBinding.inflate(layoutInflater)
+        setContentView(views.root)
+        views.testLinkifyContentView.removeAllViews()
 
         listOf(
                 "https://www.html5rocks.com/en/tutorials/webrtc/basics/ |",
@@ -89,43 +79,42 @@ class TestLinkifyActivity : AppCompatActivity() {
         )
                 .forEach { textContent ->
                     val item = LayoutInflater.from(this)
-                            .inflate(R.layout.item_test_linkify, scrollContent, false)
-
-                    item.findViewById<TextView>(R.id.test_linkify_auto_text)
-                            ?.apply {
-                                text = textContent
-                                /* TODO Use BetterLinkMovementMethod when the other PR is merged
-                                movementMethod = MatrixLinkMovementMethod(object : MockMessageAdapterActionListener() {
-                                    override fun onURLClick(uri: Uri?) {
-                                        Snackbar.make(coordinatorLayout, "URI Clicked: $uri", Snackbar.LENGTH_LONG)
-                                                .setAction("open") {
-                                                    openUrlInExternalBrowser(this@TestLinkifyActivity, uri)
-                                                }
-                                                .show()
-                                    }
-                                })
-                                */
+                            .inflate(R.layout.item_test_linkify, views.testLinkifyContentView, false)
+                    val subViews = ItemTestLinkifyBinding.bind(item)
+                    subViews.testLinkifyAutoText.apply {
+                        text = textContent
+                        /* TODO Use BetterLinkMovementMethod when the other PR is merged
+                        movementMethod = MatrixLinkMovementMethod(object : MockMessageAdapterActionListener() {
+                            override fun onURLClick(uri: Uri?) {
+                                Snackbar.make(coordinatorLayout, "URI Clicked: $uri", Snackbar.LENGTH_LONG)
+                                        .setAction("open") {
+                                            openUrlInExternalBrowser(this@TestLinkifyActivity, uri)
+                                        }
+                                        .show()
                             }
+                        })
+                        */
+                    }
 
-                    item.findViewById<TextView>(R.id.test_linkify_custom_text)
-                            ?.apply {
-                                text = textContent
-                                /* TODO Use BetterLinkMovementMethod when the other PR is merged
-                                movementMethod = MatrixLinkMovementMethod(object : MockMessageAdapterActionListener() {
-                                    override fun onURLClick(uri: Uri?) {
-                                        Snackbar.make(coordinatorLayout, "URI Clicked: $uri", Snackbar.LENGTH_LONG)
-                                                .setAction("open") {
-                                                    openUrlInExternalBrowser(this@TestLinkifyActivity, uri)
-                                                }
-                                                .show()
-                                    }
-                                })
-                                */
-
-                                // TODO Call VectorLinkify.addLinks(text)
+                    subViews.testLinkifyCustomText.apply {
+                        text = textContent
+                        /* TODO Use BetterLinkMovementMethod when the other PR is merged
+                        movementMethod = MatrixLinkMovementMethod(object : MockMessageAdapterActionListener() {
+                            override fun onURLClick(uri: Uri?) {
+                                Snackbar.make(coordinatorLayout, "URI Clicked: $uri", Snackbar.LENGTH_LONG)
+                                        .setAction("open") {
+                                            openUrlInExternalBrowser(this@TestLinkifyActivity, uri)
+                                        }
+                                        .show()
                             }
+                        })
+                        */
 
-                    scrollContent.addView(item, ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT))
+                        // TODO Call VectorLinkify.addLinks(text)
+                    }
+
+                    views.testLinkifyContentView
+                            .addView(item, ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT))
                 }
     }
 }

vector/src/debug/java/im/vector/app/features/debug/sas/DebugSasEmojiActivity.kt

@@ -18,24 +18,26 @@ package im.vector.app.features.debug.sas
 
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
+import im.vector.app.databinding.FragmentGenericRecyclerBinding
 import org.matrix.android.sdk.api.crypto.getAllVerificationEmojis
-import kotlinx.android.synthetic.main.fragment_generic_recycler.*
 
 class DebugSasEmojiActivity : AppCompatActivity() {
 
+    private lateinit var views: FragmentGenericRecyclerBinding
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        setContentView(R.layout.fragment_generic_recycler)
+        views = FragmentGenericRecyclerBinding.inflate(layoutInflater)
+        setContentView(views.root)
         val controller = SasEmojiController()
-        genericRecyclerView.configureWith(controller)
+        views.genericRecyclerView.configureWith(controller)
         controller.setData(SasState(getAllVerificationEmojis()))
     }
 
     override fun onDestroy() {
-        genericRecyclerView.cleanup()
+        views.genericRecyclerView.cleanup()
         super.onDestroy()
     }
 }

vector/src/debug/res/layout/activity_debug_menu.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/coordinatorLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context=".features.debug.DebugMenuActivity"

vector/src/debug/res/layout/activity_test_linkify.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/test_linkify_coordinator"
+    android:id="@+id/coordinatorLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:background="#7F70808D"

vector/src/debug/res/layout/activity_test_material_theme.xml

@@ -2,7 +2,7 @@
 <androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/debugMaterialCoordinator"
+    android:id="@+id/coordinatorLayout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"

vector/src/main/assets/open_source_licenses.html

@@ -312,11 +312,6 @@ SOFTWARE.
         <br/>
         Copyright (c) 2017
     </li>
-    <li>
-        <b>Butterknife</b>
-        <br/>
-        Copyright 2013 Jake Wharton
-    </li>
     <li>
         <b>seismic</b>
         <br/>

vector/src/main/java/im/vector/app/core/dialogs/ConfirmationDialogBuilder.kt

@@ -21,7 +21,7 @@ import androidx.annotation.StringRes
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
 import im.vector.app.R
-import kotlinx.android.synthetic.main.dialog_confirmation_with_reason.view.*
+import im.vector.app.databinding.DialogConfirmationWithReasonBinding
 
 object ConfirmationDialogBuilder {
 
@@ -33,25 +33,26 @@ object ConfirmationDialogBuilder {
              @StringRes reasonHintRes: Int,
              confirmation: (String?) -> Unit) {
         val layout = activity.layoutInflater.inflate(R.layout.dialog_confirmation_with_reason, null)
-        layout.dialogConfirmationText.setText(confirmationRes)
+        val views = DialogConfirmationWithReasonBinding.bind(layout)
+        views.dialogConfirmationText.setText(confirmationRes)
 
-        layout.dialogReasonCheck.isVisible = askForReason
-        layout.dialogReasonTextInputLayout.isVisible = askForReason
+        views.dialogReasonCheck.isVisible = askForReason
+        views.dialogReasonTextInputLayout.isVisible = askForReason
 
-        layout.dialogReasonCheck.setOnCheckedChangeListener { _, isChecked ->
-            layout.dialogReasonTextInputLayout.isEnabled = isChecked
+        views.dialogReasonCheck.setOnCheckedChangeListener { _, isChecked ->
+            views.dialogReasonTextInputLayout.isEnabled = isChecked
         }
         if (askForReason && reasonHintRes != 0) {
-            layout.dialogReasonInput.setHint(reasonHintRes)
+            views.dialogReasonInput.setHint(reasonHintRes)
         }
 
         AlertDialog.Builder(activity)
                 .setTitle(titleRes)
                 .setView(layout)
                 .setPositiveButton(positiveRes) { _, _ ->
-                    val reason = layout.dialogReasonInput.text.toString()
+                    val reason = views.dialogReasonInput.text.toString()
                             .takeIf { askForReason }
-                            ?.takeIf { layout.dialogReasonCheck.isChecked }
+                            ?.takeIf { views.dialogReasonCheck.isChecked }
                             ?.takeIf { it.isNotBlank() }
                     confirmation(reason)
                 }

vector/src/main/java/im/vector/app/core/dialogs/ExportKeysDialog.kt

@@ -18,14 +18,11 @@ package im.vector.app.core.dialogs
 
 import android.app.Activity
 import android.text.Editable
-import android.widget.Button
-import android.widget.ImageView
 import androidx.appcompat.app.AlertDialog
-import com.google.android.material.textfield.TextInputEditText
-import com.google.android.material.textfield.TextInputLayout
 import im.vector.app.R
 import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.SimpleTextWatcher
+import im.vector.app.databinding.DialogExportE2eKeysBinding
 
 class ExportKeysDialog {
 
@@ -33,48 +30,44 @@ class ExportKeysDialog {
 
     fun show(activity: Activity, exportKeyDialogListener: ExportKeyDialogListener) {
         val dialogLayout = activity.layoutInflater.inflate(R.layout.dialog_export_e2e_keys, null)
+        val views = DialogExportE2eKeysBinding.bind(dialogLayout)
         val builder = AlertDialog.Builder(activity)
                 .setTitle(R.string.encryption_export_room_keys)
                 .setView(dialogLayout)
 
-        val passPhrase1EditText = dialogLayout.findViewById<TextInputEditText>(R.id.exportDialogEt)
-        val passPhrase2EditText = dialogLayout.findViewById<TextInputEditText>(R.id.exportDialogEtConfirm)
-        val passPhrase2Til = dialogLayout.findViewById<TextInputLayout>(R.id.exportDialogTilConfirm)
-        val exportButton = dialogLayout.findViewById<Button>(R.id.exportDialogSubmit)
         val textWatcher = object : SimpleTextWatcher() {
             override fun afterTextChanged(s: Editable) {
                 when {
-                    passPhrase1EditText.text.isNullOrEmpty()                                   -> {
-                        exportButton.isEnabled = false
-                        passPhrase2Til.error = null
+                    views.exportDialogEt.text.isNullOrEmpty()                                   -> {
+                        views.exportDialogSubmit.isEnabled = false
+                        views.exportDialogTilConfirm.error = null
                     }
-                    passPhrase1EditText.text.toString() == passPhrase2EditText.text.toString() -> {
-                        exportButton.isEnabled = true
-                        passPhrase2Til.error = null
+                    views.exportDialogEt.text.toString() == views.exportDialogEtConfirm.text.toString() -> {
+                        views.exportDialogSubmit.isEnabled = true
+                        views.exportDialogTilConfirm.error = null
                     }
                     else                                                                       -> {
-                        exportButton.isEnabled = false
-                        passPhrase2Til.error = activity.getString(R.string.passphrase_passphrase_does_not_match)
+                        views.exportDialogSubmit.isEnabled = false
+                        views.exportDialogTilConfirm.error = activity.getString(R.string.passphrase_passphrase_does_not_match)
                     }
                 }
             }
         }
 
-        passPhrase1EditText.addTextChangedListener(textWatcher)
-        passPhrase2EditText.addTextChangedListener(textWatcher)
+        views.exportDialogEt.addTextChangedListener(textWatcher)
+        views.exportDialogEtConfirm.addTextChangedListener(textWatcher)
 
-        val showPassword = dialogLayout.findViewById<ImageView>(R.id.exportDialogShowPassword)
-        showPassword.setOnClickListener {
+        views.exportDialogShowPassword.setOnClickListener {
             passwordVisible = !passwordVisible
-            passPhrase1EditText.showPassword(passwordVisible)
-            passPhrase2EditText.showPassword(passwordVisible)
-            showPassword.setImageResource(if (passwordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+            views.exportDialogEt.showPassword(passwordVisible)
+            views.exportDialogEtConfirm.showPassword(passwordVisible)
+            views.exportDialogShowPassword.setImageResource(if (passwordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
         }
 
         val exportDialog = builder.show()
 
-        exportButton.setOnClickListener {
-            exportKeyDialogListener.onPassphrase(passPhrase1EditText.text.toString())
+        views.exportDialogSubmit.setOnClickListener {
+            exportKeyDialogListener.onPassphrase(views.exportDialogEt.text.toString())
 
             exportDialog.dismiss()
         }

vector/src/main/java/im/vector/app/core/dialogs/ManuallyVerifyDialog.kt

@@ -17,9 +17,9 @@
 package im.vector.app.core.dialogs
 
 import android.app.Activity
-import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import im.vector.app.R
+import im.vector.app.databinding.DialogDeviceVerifyBinding
 import org.matrix.android.sdk.api.extensions.getFingerprintHumanReadable
 import org.matrix.android.sdk.internal.crypto.model.CryptoDeviceInfo
 
@@ -27,6 +27,7 @@ object ManuallyVerifyDialog {
 
     fun show(activity: Activity, cryptoDeviceInfo: CryptoDeviceInfo, onVerified: (() -> Unit)) {
         val dialogLayout = activity.layoutInflater.inflate(R.layout.dialog_device_verify, null)
+        val views = DialogDeviceVerifyBinding.bind(dialogLayout)
         val builder = AlertDialog.Builder(activity)
                 .setTitle(R.string.cross_signing_verify_by_text)
                 .setView(dialogLayout)
@@ -35,17 +36,9 @@ object ManuallyVerifyDialog {
                 }
                 .setNegativeButton(R.string.cancel, null)
 
-        dialogLayout.findViewById<TextView>(R.id.encrypted_device_info_device_name)?.let {
-            it.text = cryptoDeviceInfo.displayName()
-        }
-
-        dialogLayout.findViewById<TextView>(R.id.encrypted_device_info_device_id)?.let {
-            it.text = cryptoDeviceInfo.deviceId
-        }
-
-        dialogLayout.findViewById<TextView>(R.id.encrypted_device_info_device_key)?.let {
-            it.text = cryptoDeviceInfo.getFingerprintHumanReadable()
-        }
+        views.encryptedDeviceInfoDeviceName.text = cryptoDeviceInfo.displayName()
+        views.encryptedDeviceInfoDeviceId.text = cryptoDeviceInfo.deviceId
+        views.encryptedDeviceInfoDeviceKey.text = cryptoDeviceInfo.getFingerprintHumanReadable()
 
         builder.show()
     }

vector/src/main/java/im/vector/app/core/dialogs/PromptPasswordDialog.kt

@@ -20,14 +20,12 @@ import android.app.Activity
 import android.content.DialogInterface
 import android.text.Editable
 import android.view.KeyEvent
-import android.widget.ImageView
 import androidx.appcompat.app.AlertDialog
-import com.google.android.material.textfield.TextInputEditText
-import com.google.android.material.textfield.TextInputLayout
 import im.vector.app.R
 import im.vector.app.core.extensions.hideKeyboard
 import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.SimpleTextWatcher
+import im.vector.app.databinding.DialogPromptPasswordBinding
 
 class PromptPasswordDialog {
 
@@ -35,21 +33,18 @@ class PromptPasswordDialog {
 
     fun show(activity: Activity, listener: (String) -> Unit) {
         val dialogLayout = activity.layoutInflater.inflate(R.layout.dialog_prompt_password, null)
-
-        val passwordTil = dialogLayout.findViewById<TextInputLayout>(R.id.promptPasswordTil)
-        val passwordEditText = dialogLayout.findViewById<TextInputEditText>(R.id.promptPassword)
+        val views = DialogPromptPasswordBinding.bind(dialogLayout)
         val textWatcher = object : SimpleTextWatcher() {
             override fun afterTextChanged(s: Editable) {
-                passwordTil.error = null
+                views.promptPasswordTil.error = null
             }
         }
-        passwordEditText.addTextChangedListener(textWatcher)
+        views.promptPassword.addTextChangedListener(textWatcher)
 
-        val showPassword = dialogLayout.findViewById<ImageView>(R.id.promptPasswordPasswordReveal)
-        showPassword.setOnClickListener {
+        views.promptPasswordPasswordReveal.setOnClickListener {
             passwordVisible = !passwordVisible
-            passwordEditText.showPassword(passwordVisible)
-            showPassword.setImageResource(if (passwordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+            views.promptPassword.showPassword(passwordVisible)
+            views.promptPasswordPasswordReveal.setImageResource(if (passwordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
         }
 
         AlertDialog.Builder(activity)
@@ -73,10 +68,10 @@ class PromptPasswordDialog {
                     setOnShowListener {
                         getButton(AlertDialog.BUTTON_POSITIVE)
                                 .setOnClickListener {
-                                    if (passwordEditText.text.toString().isEmpty()) {
-                                        passwordTil.error = activity.getString(R.string.error_empty_field_your_password)
+                                    if (views.promptPassword.text.toString().isEmpty()) {
+                                        views.promptPasswordTil.error = activity.getString(R.string.error_empty_field_your_password)
                                     } else {
-                                        listener.invoke(passwordEditText.text.toString())
+                                        listener.invoke(views.promptPassword.text.toString())
                                         dismiss()
                                     }
                                 }

vector/src/main/java/im/vector/app/core/dialogs/UnrecognizedCertificateDialog.kt

@@ -16,12 +16,11 @@
 package im.vector.app.core.dialogs
 
 import android.app.Activity
-import android.view.View
-import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import im.vector.app.R
 import im.vector.app.core.di.ActiveSessionHolder
 import im.vector.app.core.resources.StringProvider
+import im.vector.app.databinding.DialogSslFingerprintBinding
 import org.matrix.android.sdk.internal.network.ssl.Fingerprint
 import timber.log.Timber
 import java.util.HashMap
@@ -95,30 +94,27 @@ class UnrecognizedCertificateDialog @Inject constructor(
 
         val builder = AlertDialog.Builder(activity)
         val inflater = activity.layoutInflater
-        val layout: View = inflater.inflate(R.layout.dialog_ssl_fingerprint, null)
-        val sslFingerprintTitle = layout.findViewById<TextView>(R.id.ssl_fingerprint_title)
-        sslFingerprintTitle.text = stringProvider.getString(R.string.ssl_fingerprint_hash, unrecognizedFingerprint.hashType.toString())
-        val sslFingerprint = layout.findViewById<TextView>(R.id.ssl_fingerprint)
-        sslFingerprint.text = unrecognizedFingerprint.displayableHexRepr
-        val sslUserId = layout.findViewById<TextView>(R.id.ssl_user_id)
+        val layout = inflater.inflate(R.layout.dialog_ssl_fingerprint, null)
+        val views = DialogSslFingerprintBinding.bind(layout)
+        views.sslFingerprintTitle.text = stringProvider.getString(R.string.ssl_fingerprint_hash, unrecognizedFingerprint.hashType.toString())
+        views.sslFingerprint.text = unrecognizedFingerprint.displayableHexRepr
         if (userId != null) {
-            sslUserId.text = stringProvider.getString(R.string.generic_label_and_value,
+            views.sslUserId.text = stringProvider.getString(R.string.generic_label_and_value,
                     stringProvider.getString(R.string.username),
                     userId)
         } else {
-            sslUserId.text = stringProvider.getString(R.string.generic_label_and_value,
+            views.sslUserId.text = stringProvider.getString(R.string.generic_label_and_value,
                     stringProvider.getString(R.string.hs_url),
                     homeServerUrl)
         }
-        val sslExpl = layout.findViewById<TextView>(R.id.ssl_explanation)
         if (existing) {
             if (homeServerConnectionConfigHasFingerprints) {
-                sslExpl.text = stringProvider.getString(R.string.ssl_expected_existing_expl)
+                views.sslExplanation.text = stringProvider.getString(R.string.ssl_expected_existing_expl)
             } else {
-                sslExpl.text = stringProvider.getString(R.string.ssl_unexpected_existing_expl)
+                views.sslExplanation.text = stringProvider.getString(R.string.ssl_unexpected_existing_expl)
             }
         } else {
-            sslExpl.text = stringProvider.getString(R.string.ssl_cert_new_account_expl)
+            views.sslExplanation.text = stringProvider.getString(R.string.ssl_cert_new_account_expl)
         }
         builder.setView(layout)
         builder.setTitle(R.string.ssl_could_not_verify)

vector/src/main/java/im/vector/app/core/extensions/Activity.kt

@@ -23,15 +23,15 @@ import androidx.activity.ComponentActivity
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.FragmentTransaction
-import im.vector.app.core.platform.VectorBaseActivity
 
 fun ComponentActivity.registerStartForActivityResult(onResult: (ActivityResult) -> Unit): ActivityResultLauncher<Intent> {
     return registerForActivityResult(ActivityResultContracts.StartActivityForResult(), onResult)
 }
 
-fun VectorBaseActivity.addFragment(
+fun AppCompatActivity.addFragment(
         frameId: Int,
         fragment: Fragment,
         allowStateLoss: Boolean = false
@@ -39,7 +39,7 @@ fun VectorBaseActivity.addFragment(
     supportFragmentManager.commitTransaction(allowStateLoss) { add(frameId, fragment) }
 }
 
-fun <T : Fragment> VectorBaseActivity.addFragment(
+fun <T : Fragment> AppCompatActivity.addFragment(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,
@@ -51,7 +51,7 @@ fun <T : Fragment> VectorBaseActivity.addFragment(
     }
 }
 
-fun VectorBaseActivity.replaceFragment(
+fun AppCompatActivity.replaceFragment(
         frameId: Int,
         fragment: Fragment,
         tag: String? = null,
@@ -60,7 +60,7 @@ fun VectorBaseActivity.replaceFragment(
     supportFragmentManager.commitTransaction(allowStateLoss) { replace(frameId, fragment, tag) }
 }
 
-fun <T : Fragment> VectorBaseActivity.replaceFragment(
+fun <T : Fragment> AppCompatActivity.replaceFragment(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,
@@ -72,7 +72,7 @@ fun <T : Fragment> VectorBaseActivity.replaceFragment(
     }
 }
 
-fun VectorBaseActivity.addFragmentToBackstack(
+fun AppCompatActivity.addFragmentToBackstack(
         frameId: Int,
         fragment: Fragment,
         tag: String? = null,
@@ -81,19 +81,20 @@ fun VectorBaseActivity.addFragmentToBackstack(
     supportFragmentManager.commitTransaction(allowStateLoss) { replace(frameId, fragment).addToBackStack(tag) }
 }
 
-fun <T : Fragment> VectorBaseActivity.addFragmentToBackstack(frameId: Int,
-                                                             fragmentClass: Class<T>,
-                                                             params: Parcelable? = null,
-                                                             tag: String? = null,
-                                                             allowStateLoss: Boolean = false,
-                                                             option: ((FragmentTransaction) -> Unit)? = null) {
+fun <T : Fragment> AppCompatActivity.addFragmentToBackstack(
+        frameId: Int,
+        fragmentClass: Class<T>,
+        params: Parcelable? = null,
+        tag: String? = null,
+        allowStateLoss: Boolean = false,
+        option: ((FragmentTransaction) -> Unit)? = null) {
     supportFragmentManager.commitTransaction(allowStateLoss) {
         option?.invoke(this)
         replace(frameId, fragmentClass, params.toMvRxBundle(), tag).addToBackStack(tag)
     }
 }
 
-fun VectorBaseActivity.hideKeyboard() {
+fun AppCompatActivity.hideKeyboard() {
     currentFocus?.hideKeyboard()
 }
 

vector/src/main/java/im/vector/app/core/extensions/Fragment.kt

@@ -24,7 +24,6 @@ import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.fragment.app.Fragment
 import im.vector.app.R
-import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.selectTxtFileToWrite
 import java.text.SimpleDateFormat
 import java.util.Date
@@ -34,7 +33,7 @@ fun Fragment.registerStartForActivityResult(onResult: (ActivityResult) -> Unit):
     return registerForActivityResult(ActivityResultContracts.StartActivityForResult(), onResult)
 }
 
-fun VectorBaseFragment.addFragment(
+fun Fragment.addFragment(
         frameId: Int,
         fragment: Fragment,
         allowStateLoss: Boolean = false
@@ -42,7 +41,7 @@ fun VectorBaseFragment.addFragment(
     parentFragmentManager.commitTransaction(allowStateLoss) { add(frameId, fragment) }
 }
 
-fun <T : Fragment> VectorBaseFragment.addFragment(
+fun <T : Fragment> Fragment.addFragment(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,
@@ -54,7 +53,7 @@ fun <T : Fragment> VectorBaseFragment.addFragment(
     }
 }
 
-fun VectorBaseFragment.replaceFragment(
+fun Fragment.replaceFragment(
         frameId: Int,
         fragment: Fragment,
         allowStateLoss: Boolean = false
@@ -62,7 +61,7 @@ fun VectorBaseFragment.replaceFragment(
     parentFragmentManager.commitTransaction(allowStateLoss) { replace(frameId, fragment) }
 }
 
-fun <T : Fragment> VectorBaseFragment.replaceFragment(
+fun <T : Fragment> Fragment.replaceFragment(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,
@@ -74,7 +73,7 @@ fun <T : Fragment> VectorBaseFragment.replaceFragment(
     }
 }
 
-fun VectorBaseFragment.addFragmentToBackstack(
+fun Fragment.addFragmentToBackstack(
         frameId: Int,
         fragment: Fragment,
         tag: String? = null,
@@ -83,7 +82,7 @@ fun VectorBaseFragment.addFragmentToBackstack(
     parentFragmentManager.commitTransaction(allowStateLoss) { replace(frameId, fragment, tag).addToBackStack(tag) }
 }
 
-fun <T : Fragment> VectorBaseFragment.addFragmentToBackstack(
+fun <T : Fragment> Fragment.addFragmentToBackstack(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,
@@ -95,7 +94,7 @@ fun <T : Fragment> VectorBaseFragment.addFragmentToBackstack(
     }
 }
 
-fun VectorBaseFragment.addChildFragment(
+fun Fragment.addChildFragment(
         frameId: Int,
         fragment: Fragment,
         tag: String? = null,
@@ -104,7 +103,7 @@ fun VectorBaseFragment.addChildFragment(
     childFragmentManager.commitTransaction(allowStateLoss) { add(frameId, fragment, tag) }
 }
 
-fun <T : Fragment> VectorBaseFragment.addChildFragment(
+fun <T : Fragment> Fragment.addChildFragment(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,
@@ -116,7 +115,7 @@ fun <T : Fragment> VectorBaseFragment.addChildFragment(
     }
 }
 
-fun VectorBaseFragment.replaceChildFragment(
+fun Fragment.replaceChildFragment(
         frameId: Int,
         fragment: Fragment,
         tag: String? = null,
@@ -125,7 +124,7 @@ fun VectorBaseFragment.replaceChildFragment(
     childFragmentManager.commitTransaction(allowStateLoss) { replace(frameId, fragment, tag) }
 }
 
-fun <T : Fragment> VectorBaseFragment.replaceChildFragment(
+fun <T : Fragment> Fragment.replaceChildFragment(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,
@@ -137,7 +136,7 @@ fun <T : Fragment> VectorBaseFragment.replaceChildFragment(
     }
 }
 
-fun VectorBaseFragment.addChildFragmentToBackstack(
+fun Fragment.addChildFragmentToBackstack(
         frameId: Int,
         fragment: Fragment,
         tag: String? = null,
@@ -146,7 +145,7 @@ fun VectorBaseFragment.addChildFragmentToBackstack(
     childFragmentManager.commitTransaction(allowStateLoss) { replace(frameId, fragment).addToBackStack(tag) }
 }
 
-fun <T : Fragment> VectorBaseFragment.addChildFragmentToBackstack(
+fun <T : Fragment> Fragment.addChildFragmentToBackstack(
         frameId: Int,
         fragmentClass: Class<T>,
         params: Parcelable? = null,

vector/src/main/java/im/vector/app/core/extensions/Parcelable.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright (c) 2020 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package im.vector.app.core.extensions
+
+import android.os.Bundle
+import android.os.Parcelable
+import com.airbnb.mvrx.MvRx
+
+fun Parcelable?.toMvRxBundle(): Bundle? {
+    return this?.let { Bundle().apply { putParcelable(MvRx.KEY_ARG, it) } }
+}

vector/src/main/java/im/vector/app/core/platform/ButtonStateView.kt

@@ -18,14 +18,13 @@ package im.vector.app.core.platform
 
 import android.content.Context
 import android.util.AttributeSet
-import android.view.View
 import android.view.ViewGroup
 import android.widget.Button
 import android.widget.FrameLayout
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
 import im.vector.app.R
-import kotlinx.android.synthetic.main.view_button_state.view.*
+import im.vector.app.databinding.ViewButtonStateBinding
 
 class ButtonStateView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyle: Int = 0)
     : FrameLayout(context, attrs, defStyle) {
@@ -47,11 +46,15 @@ class ButtonStateView @JvmOverloads constructor(context: Context, attrs: Attribu
     // Big or Flat button
     var button: Button
 
+    private val views: ViewButtonStateBinding
+
     init {
-        View.inflate(context, R.layout.view_button_state, this)
+        inflate(context, R.layout.view_button_state, this)
+        views = ViewButtonStateBinding.bind(this)
+
         layoutParams = LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT)
 
-        buttonStateRetry.setOnClickListener {
+        views.buttonStateRetry.setOnClickListener {
             callback?.onRetryClicked()
         }
 
@@ -63,15 +66,15 @@ class ButtonStateView @JvmOverloads constructor(context: Context, attrs: Attribu
                 .apply {
                     try {
                         if (getBoolean(R.styleable.ButtonStateView_bsv_use_flat_button, true)) {
-                            button = buttonStateButtonFlat
-                            buttonStateButtonBig.isVisible = false
+                            button = views.buttonStateButtonFlat
+                            views.buttonStateButtonBig.isVisible = false
                         } else {
-                            button = buttonStateButtonBig
-                            buttonStateButtonFlat.isVisible = false
+                            button = views.buttonStateButtonBig
+                            views.buttonStateButtonFlat.isVisible = false
                         }
 
                         button.text = getString(R.styleable.ButtonStateView_bsv_button_text)
-                        buttonStateLoaded.setImageDrawable(getDrawable(R.styleable.ButtonStateView_bsv_loaded_image_src))
+                        views.buttonStateLoaded.setImageDrawable(getDrawable(R.styleable.ButtonStateView_bsv_loaded_image_src))
                     } finally {
                         recycle()
                     }
@@ -90,8 +93,8 @@ class ButtonStateView @JvmOverloads constructor(context: Context, attrs: Attribu
             button.isInvisible = true
         }
 
-        buttonStateLoading.isVisible = newState == State.Loading
-        buttonStateLoaded.isVisible = newState == State.Loaded
-        buttonStateRetry.isVisible = newState == State.Error
+        views.buttonStateLoading.isVisible = newState == State.Loading
+        views.buttonStateLoaded.isVisible = newState == State.Loaded
+        views.buttonStateRetry.isVisible = newState == State.Error
     }
 }

vector/src/main/java/im/vector/app/core/platform/SimpleFragmentActivity.kt

@@ -15,37 +15,25 @@
  */
 package im.vector.app.core.platform
 
-import android.view.View
-import android.widget.ProgressBar
-import android.widget.TextView
 import androidx.annotation.CallSuper
 import androidx.core.view.isGone
 import androidx.core.view.isVisible
-import butterknife.BindView
-import im.vector.app.R
 import im.vector.app.core.di.ScreenComponent
 import im.vector.app.core.extensions.hideKeyboard
-import kotlinx.android.synthetic.main.activity.*
+import im.vector.app.databinding.ActivityBinding
+
 import org.matrix.android.sdk.api.session.Session
-import javax.inject.Inject
 
 /**
  * Simple activity with a toolbar, a waiting overlay, and a fragment container and a session.
  */
-abstract class SimpleFragmentActivity : VectorBaseActivity() {
+abstract class SimpleFragmentActivity : VectorBaseActivity<ActivityBinding>() {
 
-    override fun getLayoutRes() = R.layout.activity
+    final override fun getBinding() = ActivityBinding.inflate(layoutInflater)
 
-    @BindView(R.id.waiting_view_status_circular_progress)
-    lateinit var waitingCircularProgress: View
+    final override fun getCoordinatorLayout() = views.coordinatorLayout
 
-    @BindView(R.id.waiting_view_status_text)
-    lateinit var waitingStatusText: TextView
-
-    @BindView(R.id.waiting_view_status_horizontal_progress)
-    lateinit var waitingHorizontalProgress: ProgressBar
-
-    @Inject lateinit var session: Session
+    lateinit var session: Session
 
     @CallSuper
     override fun injectWith(injector: ScreenComponent) {
@@ -53,8 +41,8 @@ abstract class SimpleFragmentActivity : VectorBaseActivity() {
     }
 
     override fun initUiAndData() {
-        configureToolbar(toolbar)
-        waitingView = findViewById(R.id.waiting_view)
+        configureToolbar(views.toolbar)
+        waitingView = views.waitingView.waitingView
     }
 
     /**
@@ -63,21 +51,21 @@ abstract class SimpleFragmentActivity : VectorBaseActivity() {
      */
     fun updateWaitingView(data: WaitingViewData?) {
         data?.let {
-            waitingStatusText.text = data.message
+            views.waitingView.waitingStatusText.text = data.message
 
             if (data.progress != null && data.progressTotal != null) {
-                waitingHorizontalProgress.isIndeterminate = false
-                waitingHorizontalProgress.progress = data.progress
-                waitingHorizontalProgress.max = data.progressTotal
-                waitingHorizontalProgress.isVisible = true
-                waitingCircularProgress.isVisible = false
+                views.waitingView.waitingHorizontalProgress.isIndeterminate = false
+                views.waitingView.waitingHorizontalProgress.progress = data.progress
+                views.waitingView.waitingHorizontalProgress.max = data.progressTotal
+                views.waitingView.waitingHorizontalProgress.isVisible = true
+                views.waitingView.waitingCircularProgress.isVisible = false
             } else if (data.isIndeterminate) {
-                waitingHorizontalProgress.isIndeterminate = true
-                waitingHorizontalProgress.isVisible = true
-                waitingCircularProgress.isVisible = false
+                views.waitingView.waitingHorizontalProgress.isIndeterminate = true
+                views.waitingView.waitingHorizontalProgress.isVisible = true
+                views.waitingView.waitingCircularProgress.isVisible = false
             } else {
-                waitingHorizontalProgress.isVisible = false
-                waitingCircularProgress.isVisible = true
+                views.waitingView.waitingHorizontalProgress.isVisible = false
+                views.waitingView.waitingCircularProgress.isVisible = true
             }
 
             showWaitingView()
@@ -86,17 +74,17 @@ abstract class SimpleFragmentActivity : VectorBaseActivity() {
         }
     }
 
-    override fun showWaitingView() {
+    override fun showWaitingView(text: String?) {
         hideKeyboard()
-        waitingStatusText.isGone = waitingStatusText.text.isNullOrBlank()
-        super.showWaitingView()
+        views.waitingView.waitingStatusText.isGone = views.waitingView.waitingStatusText.text.isNullOrBlank()
+        super.showWaitingView(text)
     }
 
     override fun hideWaitingView() {
-        waitingStatusText.text = null
-        waitingStatusText.isGone = true
-        waitingHorizontalProgress.progress = 0
-        waitingHorizontalProgress.isVisible = false
+        views.waitingView.waitingStatusText.text = null
+        views.waitingView.waitingStatusText.isGone = true
+        views.waitingView.waitingHorizontalProgress.progress = 0
+        views.waitingView.waitingHorizontalProgress.isVisible = false
         super.hideWaitingView()
     }
 

vector/src/main/java/im/vector/app/core/platform/StateView.kt

@@ -24,7 +24,7 @@ import android.widget.FrameLayout
 import androidx.core.view.isVisible
 import im.vector.app.R
 import im.vector.app.core.extensions.updateConstraintSet
-import kotlinx.android.synthetic.main.view_state.view.*
+import im.vector.app.databinding.ViewStateBinding
 
 class StateView @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, defStyle: Int = 0)
     : FrameLayout(context, attrs, defStyle) {
@@ -42,6 +42,8 @@ class StateView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
         data class Error(val message: CharSequence? = null) : State()
     }
 
+    private val views: ViewStateBinding
+
     var eventCallback: EventCallback? = null
 
     var contentView: View? = null
@@ -58,33 +60,34 @@ class StateView @JvmOverloads constructor(context: Context, attrs: AttributeSet?
     }
 
     init {
-        View.inflate(context, R.layout.view_state, this)
+        inflate(context, R.layout.view_state, this)
+        views = ViewStateBinding.bind(this)
         layoutParams = LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT)
-        errorRetryView.setOnClickListener {
+        views.errorRetryView.setOnClickListener {
             eventCallback?.onRetryClicked()
         }
         state = State.Content
     }
 
     private fun update(newState: State) {
-        progressBar.isVisible = newState is State.Loading
-        errorView.isVisible = newState is State.Error
-        emptyView.isVisible = newState is State.Empty
+        views.progressBar.isVisible = newState is State.Loading
+        views.errorView.isVisible = newState is State.Error
+        views.emptyView.isVisible = newState is State.Empty
         contentView?.isVisible = newState is State.Content
 
         when (newState) {
             is State.Content -> Unit
             is State.Loading -> Unit
             is State.Empty   -> {
-                emptyImageView.setImageDrawable(newState.image)
-                emptyView.updateConstraintSet {
+                views.emptyImageView.setImageDrawable(newState.image)
+                views.emptyView.updateConstraintSet {
                     it.constrainPercentHeight(R.id.emptyImageView, if (newState.isBigImage) 0.5f else 0.1f)
                 }
-                emptyMessageView.text = newState.message
-                emptyTitleView.text = newState.title
+                views.emptyMessageView.text = newState.message
+                views.emptyTitleView.text = newState.title
             }
             is State.Error   -> {
-                errorMessageView.text = newState.message
+                views.errorMessageView.text = newState.message
             }
         }
     }

vector/src/main/java/im/vector/app/core/platform/VectorBaseActivity.kt

@@ -20,16 +20,15 @@ import android.app.Activity
 import android.content.Context
 import android.content.res.Configuration
 import android.os.Bundle
-import android.os.Parcelable
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
 import android.view.WindowManager
+import android.widget.TextView
 import androidx.annotation.AttrRes
-import androidx.annotation.LayoutRes
+import androidx.annotation.CallSuper
 import androidx.annotation.MainThread
 import androidx.annotation.MenuRes
-import androidx.annotation.Nullable
 import androidx.annotation.StringRes
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.Toolbar
@@ -40,10 +39,7 @@ import androidx.fragment.app.FragmentFactory
 import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.Observer
 import androidx.lifecycle.ViewModelProvider
-import butterknife.BindView
-import butterknife.ButterKnife
-import butterknife.Unbinder
-import com.airbnb.mvrx.MvRx
+import androidx.viewbinding.ViewBinding
 import com.bumptech.glide.util.Util
 import com.google.android.material.snackbar.Snackbar
 import im.vector.app.BuildConfig
@@ -61,6 +57,7 @@ import im.vector.app.core.extensions.observeEvent
 import im.vector.app.core.extensions.observeNotNull
 import im.vector.app.core.extensions.registerStartForActivityResult
 import im.vector.app.core.extensions.restart
+import im.vector.app.core.extensions.setTextOrHide
 import im.vector.app.core.extensions.vectorComponent
 import im.vector.app.core.utils.toast
 import im.vector.app.features.MainActivity
@@ -83,20 +80,18 @@ import im.vector.app.receivers.DebugReceiver
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.disposables.CompositeDisposable
 import io.reactivex.disposables.Disposable
+
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.api.failure.GlobalError
 import timber.log.Timber
 import kotlin.system.measureTimeMillis
 
-abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
+abstract class VectorBaseActivity<VB: ViewBinding> : AppCompatActivity(), HasScreenInjector {
     /* ==========================================================================================
-     * UI
+     * View
      * ========================================================================================== */
 
-    @Nullable
-    @JvmField
-    @BindView(R.id.vector_coordinator_layout)
-    var coordinatorLayout: CoordinatorLayout? = null
+    protected lateinit var views: VB
 
     /* ==========================================================================================
      * View model
@@ -138,8 +133,6 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
     // Filter for multiple invalid token error
     private var mainActivityStarted = false
 
-    private var unBinder: Unbinder? = null
-
     private var savedInstanceState: Bundle? = null
 
     // For debug only
@@ -176,6 +169,7 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
         uiDisposables.add(this)
     }
 
+    @CallSuper
     override fun onCreate(savedInstanceState: Bundle?) {
         Timber.i("onCreate Activity ${javaClass.simpleName}")
         val vectorComponent = getVectorComponent()
@@ -223,11 +217,8 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
         // Hack for font size
         applyFontSize()
 
-        if (getLayoutRes() != -1) {
-            setContentView(getLayoutRes())
-        }
-
-        unBinder = ButterKnife.bind(this)
+        views = getBinding()
+        setContentView(views.root)
 
         this.savedInstanceState = savedInstanceState
 
@@ -306,8 +297,6 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
     override fun onDestroy() {
         super.onDestroy()
         Timber.i("onDestroy Activity ${javaClass.simpleName}")
-        unBinder?.unbind()
-        unBinder = null
 
         uiDisposables.dispose()
     }
@@ -467,7 +456,7 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
     }
 
     private fun recursivelyDispatchOnBackPressed(fm: FragmentManager, fromToolbar: Boolean): Boolean {
-        val reverseOrder = fm.fragments.filterIsInstance<VectorBaseFragment>().reversed()
+        val reverseOrder = fm.fragments.filterIsInstance<VectorBaseFragment<*>>().reversed()
         for (f in reverseOrder) {
             val handledByChildFragments = recursivelyDispatchOnBackPressed(f.childFragmentManager, fromToolbar)
             if (handledByChildFragments) {
@@ -513,10 +502,6 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
         }
     }
 
-    fun Parcelable?.toMvRxBundle(): Bundle? {
-        return this?.let { Bundle().apply { putParcelable(MvRx.KEY_ARG, it) } }
-    }
-
     // ==============================================================================================
     // Handle loading view (also called waiting view or spinner view)
     // ==============================================================================================
@@ -537,10 +522,13 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
     fun isWaitingViewVisible() = waitingView?.isVisible == true
 
     /**
-     * Show the waiting view
+     * Show the waiting view, and set text if not null.
      */
-    open fun showWaitingView() {
+    open fun showWaitingView(text: String? = null) {
         waitingView?.isVisible = true
+        if (text != null) {
+            waitingView?.findViewById<TextView>(R.id.waitingStatusText)?.setTextOrHide(text)
+        }
     }
 
     /**
@@ -554,8 +542,7 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
      * OPEN METHODS
      * ========================================================================================== */
 
-    @LayoutRes
-    open fun getLayoutRes() = -1
+    abstract fun getBinding(): VB
 
     open fun displayInFullscreen() = false
 
@@ -582,13 +569,13 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
      * ========================================================================================== */
 
     fun showSnackbar(message: String) {
-        coordinatorLayout?.let {
+        getCoordinatorLayout()?.let {
             Snackbar.make(it, message, Snackbar.LENGTH_SHORT).show()
         }
     }
 
     fun showSnackbar(message: String, @StringRes withActionTitle: Int?, action: (() -> Unit)?) {
-        coordinatorLayout?.let {
+        getCoordinatorLayout()?.let {
             Snackbar.make(it, message, Snackbar.LENGTH_LONG).apply {
                 withActionTitle?.let {
                     setAction(withActionTitle, { action?.invoke() })
@@ -597,6 +584,8 @@ abstract class VectorBaseActivity : AppCompatActivity(), HasScreenInjector {
         }
     }
 
+    open fun getCoordinatorLayout(): CoordinatorLayout? = null
+
     /* ==========================================================================================
      * User Consent
      * ========================================================================================== */

vector/src/main/java/im/vector/app/core/platform/VectorBaseBottomSheetDialogFragment.kt

@@ -25,10 +25,8 @@ import android.view.View
 import android.view.ViewGroup
 import android.widget.FrameLayout
 import androidx.annotation.CallSuper
-import androidx.annotation.LayoutRes
 import androidx.lifecycle.ViewModelProvider
-import butterknife.ButterKnife
-import butterknife.Unbinder
+import androidx.viewbinding.ViewBinding
 import com.airbnb.mvrx.MvRx
 import com.airbnb.mvrx.MvRxView
 import com.airbnb.mvrx.MvRxViewId
@@ -48,7 +46,7 @@ import java.util.concurrent.TimeUnit
 /**
  * Add MvRx capabilities to bottomsheetdialog (like BaseMvRxFragment)
  */
-abstract class VectorBaseBottomSheetDialogFragment : BottomSheetDialogFragment(), MvRxView {
+abstract class VectorBaseBottomSheetDialogFragment<VB: ViewBinding> : BottomSheetDialogFragment(), MvRxView {
 
     private val mvrxViewIdProperty = MvRxViewId()
     final override val mvrxViewId: String by mvrxViewIdProperty
@@ -58,10 +56,13 @@ abstract class VectorBaseBottomSheetDialogFragment : BottomSheetDialogFragment()
      * View
      * ========================================================================================== */
 
-    @LayoutRes
-    abstract fun getLayoutResId(): Int
+    private var _binding: VB? = null
 
-    private var unBinder: Unbinder? = null
+    // This property is only valid between onCreateView and onDestroyView.
+    protected val views: VB
+        get() = _binding!!
+
+    abstract fun getBinding(inflater: LayoutInflater, container: ViewGroup?): VB
 
     /* ==========================================================================================
      * View model
@@ -81,8 +82,8 @@ abstract class VectorBaseBottomSheetDialogFragment : BottomSheetDialogFragment()
 
     private var bottomSheetBehavior: BottomSheetBehavior<FrameLayout>? = null
 
-    val vectorBaseActivity: VectorBaseActivity by lazy {
-        activity as VectorBaseActivity
+    val vectorBaseActivity: VectorBaseActivity<*> by lazy {
+        activity as VectorBaseActivity<*>
     }
 
     open val showExpanded = false
@@ -106,17 +107,14 @@ abstract class VectorBaseBottomSheetDialogFragment : BottomSheetDialogFragment()
     }
 
     override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
-        val view = inflater.inflate(getLayoutResId(), container, false)
-        unBinder = ButterKnife.bind(this, view)
-        return view
+        _binding = getBinding(inflater, container)
+        return views.root
     }
 
     @CallSuper
     override fun onDestroyView() {
-        super.onDestroyView()
-        unBinder?.unbind()
-        unBinder = null
         uiDisposables.clear()
+        super.onDestroyView()
     }
 
     @CallSuper

vector/src/main/java/im/vector/app/core/platform/VectorBaseFragment.kt

@@ -28,15 +28,12 @@ import android.view.MenuInflater
 import android.view.View
 import android.view.ViewGroup
 import androidx.annotation.CallSuper
-import androidx.annotation.LayoutRes
 import androidx.annotation.MainThread
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.widget.Toolbar
 import androidx.lifecycle.ViewModelProvider
-import butterknife.ButterKnife
-import butterknife.Unbinder
+import androidx.viewbinding.ViewBinding
 import com.airbnb.mvrx.BaseMvRxFragment
-import com.airbnb.mvrx.MvRx
 import com.bumptech.glide.util.Util.assertMainThread
 import com.google.android.material.snackbar.Snackbar
 import com.jakewharton.rxbinding3.view.clicks
@@ -46,20 +43,19 @@ import im.vector.app.core.di.HasScreenInjector
 import im.vector.app.core.di.ScreenComponent
 import im.vector.app.core.dialogs.UnrecognizedCertificateDialog
 import im.vector.app.core.error.ErrorFormatter
+import im.vector.app.core.extensions.toMvRxBundle
 import im.vector.app.features.navigation.Navigator
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.disposables.CompositeDisposable
 import io.reactivex.disposables.Disposable
+
 import timber.log.Timber
 import java.util.concurrent.TimeUnit
 
-abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
+abstract class VectorBaseFragment<VB: ViewBinding> : BaseMvRxFragment(), HasScreenInjector {
 
-    // Butterknife unbinder
-    private var mUnBinder: Unbinder? = null
-
-    protected val vectorBaseActivity: VectorBaseActivity by lazy {
-        activity as VectorBaseActivity
+    protected val vectorBaseActivity: VectorBaseActivity<*> by lazy {
+        activity as VectorBaseActivity<*>
     }
 
     /* ==========================================================================================
@@ -86,6 +82,16 @@ abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
     protected val fragmentViewModelProvider
         get() = ViewModelProvider(this, viewModelFactory)
 
+    /* ==========================================================================================
+     * Views
+     * ========================================================================================== */
+
+    private var _binding: VB? = null
+
+    // This property is only valid between onCreateView and onDestroyView.
+    protected val views: VB
+        get() = _binding!!
+
     /* ==========================================================================================
      * Life cycle
      * ========================================================================================== */
@@ -110,11 +116,11 @@ abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
 
     final override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
         Timber.i("onCreateView Fragment ${javaClass.simpleName}")
-        return inflater.inflate(getLayoutResId(), container, false)
+        _binding = getBinding(inflater, container)
+        return views.root
     }
 
-    @LayoutRes
-    abstract fun getLayoutResId(): Int
+    abstract fun getBinding(inflater: LayoutInflater, container: ViewGroup?): VB
 
     @CallSuper
     override fun onResume() {
@@ -125,7 +131,7 @@ abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
     @CallSuper
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        mUnBinder = ButterKnife.bind(this, view)
+        Timber.i("onViewCreated Fragment ${javaClass.simpleName}")
     }
 
     open fun showLoading(message: CharSequence?) {
@@ -138,11 +144,10 @@ abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
 
     @CallSuper
     override fun onDestroyView() {
-        super.onDestroyView()
         Timber.i("onDestroyView Fragment ${javaClass.simpleName}")
-        mUnBinder?.unbind()
-        mUnBinder = null
         uiDisposables.clear()
+        _binding = null
+        super.onDestroyView()
     }
 
     override fun onDestroy() {
@@ -180,10 +185,6 @@ abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
         arguments = args.toMvRxBundle()
     }
 
-    fun Parcelable?.toMvRxBundle(): Bundle? {
-        return this?.let { Bundle().apply { putParcelable(MvRx.KEY_ARG, it) } }
-    }
-
     @MainThread
     protected fun <T : Restorable> T.register(): T {
         assertMainThread()
@@ -192,7 +193,7 @@ abstract class VectorBaseFragment : BaseMvRxFragment(), HasScreenInjector {
     }
 
     protected fun showErrorInSnackbar(throwable: Throwable) {
-        vectorBaseActivity.coordinatorLayout?.let {
+        vectorBaseActivity.getCoordinatorLayout()?.let {
             Snackbar.make(it, errorFormatter.toHumanReadable(throwable), Snackbar.LENGTH_SHORT)
                     .show()
         }

vector/src/main/java/im/vector/app/core/preference/AddressPreference.kt

@@ -1,69 +0,0 @@
-/*
- * Copyright 2018 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package im.vector.app.core.preference
-
-import android.content.Context
-import android.util.AttributeSet
-import android.view.View
-import android.widget.ImageView
-import androidx.preference.PreferenceViewHolder
-import im.vector.app.R
-
-/**
- * Preference used in Room setting for Room aliases
- */
-class AddressPreference : VectorPreference {
-
-    // members
-    private var mMainAddressIconView: ImageView? = null
-    private var mIsMainIconVisible = false
-
-    /**
-     * @return the main icon view.
-     */
-    val mainIconView: View?
-        get() = mMainAddressIconView
-
-    constructor(context: Context) : super(context)
-
-    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
-
-    constructor(context: Context, attrs: AttributeSet, defStyle: Int) : super(context, attrs, defStyle)
-
-    init {
-        widgetLayoutResource = R.layout.vector_settings_address_preference
-    }
-
-    override fun onBindViewHolder(holder: PreferenceViewHolder) {
-        super.onBindViewHolder(holder)
-
-        val view = holder.itemView
-        mMainAddressIconView = view.findViewById(R.id.main_address_icon_view)
-        mMainAddressIconView!!.visibility = if (mIsMainIconVisible) View.VISIBLE else View.GONE
-    }
-
-    /**
-     * Set the main address icon visibility.
-     *
-     * @param isVisible true to display the main icon
-     */
-    fun setMainIconVisible(isVisible: Boolean) {
-        mIsMainIconVisible = isVisible
-
-        mMainAddressIconView?.visibility = if (mIsMainIconVisible) View.VISIBLE else View.GONE
-    }
-}

vector/src/main/java/im/vector/app/core/preference/VectorGroupPreference.kt

@@ -1,103 +0,0 @@
-/*
- * Copyright 2018 New Vector Ltd
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package im.vector.app.core.preference
-
-import android.content.Context
-import android.util.AttributeSet
-import android.view.Gravity
-import android.view.LayoutInflater
-import android.view.ViewGroup
-import android.widget.FrameLayout
-import android.widget.ImageView
-import android.widget.LinearLayout
-import androidx.preference.PreferenceViewHolder
-import androidx.preference.SwitchPreference
-import im.vector.app.R
-import org.matrix.android.sdk.api.session.Session
-import org.matrix.android.sdk.api.session.group.Group
-
-class VectorGroupPreference : SwitchPreference {
-
-    private var mAvatarView: ImageView? = null
-
-    private var mGroup: Group? = null
-    private var mSession: Session? = null
-
-    constructor(context: Context) : super(context)
-
-    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)
-
-    constructor(context: Context, attrs: AttributeSet, defStyle: Int) : super(context, attrs, defStyle)
-
-    constructor(context: Context, attrs: AttributeSet, defStyleAttr: Int, defStyleRes: Int) : super(context, attrs, defStyleAttr, defStyleRes)
-
-    override fun onBindViewHolder(holder: PreferenceViewHolder) {
-        super.onBindViewHolder(holder)
-
-        val createdView = holder.itemView
-
-        if (mAvatarView == null) {
-            try {
-                // insert the group avatar to the left
-                val iconView = createdView.findViewById<ImageView>(android.R.id.icon)
-
-                var iconViewParent = iconView.parent
-
-                while (null != iconViewParent.parent) {
-                    iconViewParent = iconViewParent.parent
-                }
-
-                val inflater = LayoutInflater.from(context)
-                val layout = inflater.inflate(R.layout.vector_settings_round_group_avatar, (iconViewParent as LinearLayout), false) as FrameLayout
-                mAvatarView = layout.findViewById(R.id.settings_round_group_avatar)
-
-                val params = LinearLayout.LayoutParams(
-                        ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT)
-                params.gravity = Gravity.CENTER
-                layout.layoutParams = params
-                iconViewParent.addView(layout, 0)
-            } catch (e: Exception) {
-                mAvatarView = null
-            }
-        }
-
-        refreshAvatar()
-    }
-
-    /**
-     * Init the group information
-     *
-     * @param group   the group
-     * @param session the session
-     */
-    fun setGroup(group: Group, session: Session) {
-        mGroup = group
-        mSession = session
-
-        refreshAvatar()
-    }
-
-    /**
-     * Refresh the avatar
-     */
-    private fun refreshAvatar() {
-        if (null != mAvatarView && null != mSession && null != mGroup) {
-            // TODO
-            // VectorUtils.loadGroupAvatar(context, session, mAvatarView, mGroup)
-        }
-    }
-}

vector/src/main/java/im/vector/app/core/ui/bottomsheet/BottomSheetGeneric.kt

@@ -17,44 +17,45 @@
 package im.vector.app.core.ui.bottomsheet
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.annotation.CallSuper
 import androidx.recyclerview.widget.RecyclerView
-import butterknife.BindView
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseBottomSheetDialogFragment
+import im.vector.app.databinding.BottomSheetGenericListBinding
+
 import javax.inject.Inject
 
 /**
  * Generic Bottom sheet with actions
  */
 abstract class BottomSheetGeneric<STATE : BottomSheetGenericState, ACTION : BottomSheetGenericAction> :
-        VectorBaseBottomSheetDialogFragment(),
+        VectorBaseBottomSheetDialogFragment<BottomSheetGenericListBinding>(),
         BottomSheetGenericController.Listener<ACTION> {
 
     @Inject lateinit var sharedViewPool: RecyclerView.RecycledViewPool
 
-    @BindView(R.id.bottomSheetRecyclerView)
-    lateinit var recyclerView: RecyclerView
-
     final override val showExpanded = true
 
-    final override fun getLayoutResId() = R.layout.bottom_sheet_generic_list
+    final override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetGenericListBinding {
+        return BottomSheetGenericListBinding.inflate(inflater, container, false)
+    }
 
     abstract fun getController(): BottomSheetGenericController<STATE, ACTION>
 
     @CallSuper
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        recyclerView.configureWith(getController(), viewPool = sharedViewPool, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetRecyclerView.configureWith(getController(), viewPool = sharedViewPool, hasFixedSize = false, disableItemAnimation = true)
         getController().listener = this
     }
 
     @CallSuper
     override fun onDestroyView() {
-        recyclerView.cleanup()
+        views.bottomSheetRecyclerView.cleanup()
         getController().listener = null
         super.onDestroyView()
     }

vector/src/main/java/im/vector/app/core/ui/views/ActiveConferenceView.kt

@@ -23,10 +23,10 @@ import android.text.style.ClickableSpan
 import android.util.AttributeSet
 import android.view.View
 import android.widget.RelativeLayout
-import android.widget.TextView
 import androidx.core.view.isVisible
 import im.vector.app.R
 import im.vector.app.core.utils.tappableMatchingText
+import im.vector.app.databinding.ViewActiveConferenceViewBinding
 import im.vector.app.features.home.room.detail.RoomDetailViewState
 import im.vector.app.features.themes.ThemeUtils
 import org.matrix.android.sdk.api.session.room.model.Membership
@@ -48,12 +48,15 @@ class ActiveConferenceView @JvmOverloads constructor(
     var callback: Callback? = null
     var jitsiWidget: Widget? = null
 
+    private lateinit var views: ViewActiveConferenceViewBinding
+
     init {
         setupView()
     }
 
     private fun setupView() {
         inflate(context, R.layout.view_active_conference_view, this)
+        views = ViewActiveConferenceViewBinding.bind(this)
         setBackgroundColor(ThemeUtils.getColor(context, R.attr.colorPrimary))
 
         // "voice" and "video" texts are underlined and clickable
@@ -78,12 +81,12 @@ class ActiveConferenceView @JvmOverloads constructor(
             }
         })
 
-        findViewById<TextView>(R.id.activeConferenceInfo).apply {
+        views.activeConferenceInfo.apply {
             text = styledText
             movementMethod = LinkMovementMethod.getInstance()
         }
 
-        findViewById<TextView>(R.id.deleteWidgetButton).setOnClickListener {
+        views.deleteWidgetButton.setOnClickListener {
             jitsiWidget?.let { callback?.onDelete(it) }
         }
     }
@@ -105,7 +108,7 @@ class ActiveConferenceView @JvmOverloads constructor(
                 jitsiWidget = activeConf
             }
             // if sent by me or if i can moderate?
-            findViewById<TextView>(R.id.deleteWidgetButton).isVisible = state.isAllowedToManageWidgets
+            views.deleteWidgetButton.isVisible = state.isAllowedToManageWidgets
         } else {
             isVisible = false
         }

vector/src/main/java/im/vector/app/core/ui/views/BottomSheetActionButton.kt

@@ -20,19 +20,15 @@ import android.content.Context
 import android.content.res.ColorStateList
 import android.graphics.drawable.Drawable
 import android.util.AttributeSet
-import android.view.View
 import android.widget.FrameLayout
-import android.widget.ImageView
-import android.widget.TextView
 import androidx.core.content.ContextCompat
 import androidx.core.content.withStyledAttributes
 import androidx.core.view.isGone
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
-import butterknife.BindView
-import butterknife.ButterKnife
 import im.vector.app.R
 import im.vector.app.core.extensions.setTextOrHide
+import im.vector.app.databinding.ItemVerificationActionBinding
 import im.vector.app.features.themes.ThemeUtils
 
 class BottomSheetActionButton @JvmOverloads constructor(
@@ -40,32 +36,18 @@ class BottomSheetActionButton @JvmOverloads constructor(
         attrs: AttributeSet? = null,
         defStyleAttr: Int = 0
 ) : FrameLayout(context, attrs, defStyleAttr) {
-
-    @BindView(R.id.itemVerificationActionTitle)
-    lateinit var actionTextView: TextView
-
-    @BindView(R.id.itemVerificationActionSubTitle)
-    lateinit var descriptionTextView: TextView
-
-    @BindView(R.id.itemVerificationLeftIcon)
-    lateinit var leftIconImageView: ImageView
-
-    @BindView(R.id.itemVerificationActionIcon)
-    lateinit var rightIconImageView: ImageView
-
-    @BindView(R.id.itemVerificationClickableZone)
-    lateinit var clickableView: View
+    val views : ItemVerificationActionBinding
 
     var title: String? = null
         set(value) {
             field = value
-            actionTextView.setTextOrHide(value)
+            views.itemVerificationActionTitle.setTextOrHide(value)
         }
 
     var subTitle: String? = null
         set(value) {
             field = value
-            descriptionTextView.setTextOrHide(value)
+            views.itemVerificationActionSubTitle.setTextOrHide(value)
         }
 
     var forceStartPadding: Boolean? = null
@@ -73,9 +55,9 @@ class BottomSheetActionButton @JvmOverloads constructor(
             field = value
             if (leftIcon == null) {
                 if (forceStartPadding == true) {
-                    leftIconImageView.isInvisible = true
+                    views.itemVerificationLeftIcon.isInvisible = true
                 } else {
-                    leftIconImageView.isGone = true
+                    views.itemVerificationLeftIcon.isGone = true
                 }
             }
         }
@@ -85,38 +67,38 @@ class BottomSheetActionButton @JvmOverloads constructor(
             field = value
             if (value == null) {
                 if (forceStartPadding == true) {
-                    leftIconImageView.isInvisible = true
+                    views.itemVerificationLeftIcon.isInvisible = true
                 } else {
-                    leftIconImageView.isGone = true
+                    views.itemVerificationLeftIcon.isGone = true
                 }
-                leftIconImageView.setImageDrawable(null)
+                views.itemVerificationLeftIcon.setImageDrawable(null)
             } else {
-                leftIconImageView.isVisible = true
-                leftIconImageView.setImageDrawable(value)
+                views.itemVerificationLeftIcon.isVisible = true
+                views.itemVerificationLeftIcon.setImageDrawable(value)
             }
         }
 
     var rightIcon: Drawable? = null
         set(value) {
             field = value
-            rightIconImageView.setImageDrawable(value)
+            views.itemVerificationActionIcon.setImageDrawable(value)
         }
 
     var tint: Int? = null
         set(value) {
             field = value
-            leftIconImageView.imageTintList = value?.let { ColorStateList.valueOf(value) }
+            views.itemVerificationLeftIcon.imageTintList = value?.let { ColorStateList.valueOf(value) }
         }
 
     var titleTextColor: Int? = null
         set(value) {
             field = value
-            value?.let { actionTextView.setTextColor(it) }
+            value?.let { views.itemVerificationActionTitle.setTextColor(it) }
         }
 
     init {
         inflate(context, R.layout.item_verification_action, this)
-        ButterKnife.bind(this)
+        views = ItemVerificationActionBinding.bind(this)
 
         context.withStyledAttributes(attrs, R.styleable.BottomSheetActionButton) {
             title = getString(R.styleable.BottomSheetActionButton_actionTitle) ?: ""

vector/src/main/java/im/vector/app/core/ui/views/JumpToReadMarkerView.kt

@@ -22,7 +22,7 @@ import android.view.View
 import android.widget.RelativeLayout
 import androidx.core.content.ContextCompat
 import im.vector.app.R
-import kotlinx.android.synthetic.main.view_jump_to_read_marker.view.*
+import im.vector.app.databinding.ViewJumpToReadMarkerBinding
 
 class JumpToReadMarkerView @JvmOverloads constructor(
         context: Context,
@@ -43,11 +43,12 @@ class JumpToReadMarkerView @JvmOverloads constructor(
 
     private fun setupView() {
         inflate(context, R.layout.view_jump_to_read_marker, this)
+        val views = ViewJumpToReadMarkerBinding.bind(this)
         setBackgroundColor(ContextCompat.getColor(context, R.color.notification_accent_color))
-        jumpToReadMarkerLabelView.setOnClickListener {
+        views.jumpToReadMarkerLabelView.setOnClickListener {
             callback?.onJumpToReadMarkerClicked()
         }
-        closeJumpToReadMarkerView.setOnClickListener {
+        views.closeJumpToReadMarkerView.setOnClickListener {
             visibility = View.INVISIBLE
             callback?.onClearReadMarkerClicked()
         }

vector/src/main/java/im/vector/app/core/ui/views/KeysBackupBanner.kt

@@ -19,15 +19,13 @@ package im.vector.app.core.ui.views
 import android.content.Context
 import android.util.AttributeSet
 import android.view.View
-import android.widget.TextView
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.edit
 import androidx.core.view.isVisible
-import butterknife.BindView
-import butterknife.ButterKnife
-import butterknife.OnClick
 import im.vector.app.R
 import im.vector.app.core.di.DefaultSharedPreferences
+import im.vector.app.databinding.ViewKeysBackupBannerBinding
+
 import timber.log.Timber
 
 /**
@@ -40,21 +38,11 @@ class KeysBackupBanner @JvmOverloads constructor(
         defStyleAttr: Int = 0
 ) : ConstraintLayout(context, attrs, defStyleAttr), View.OnClickListener {
 
-    @BindView(R.id.view_keys_backup_banner_text_1)
-    lateinit var textView1: TextView
-
-    @BindView(R.id.view_keys_backup_banner_text_2)
-    lateinit var textView2: TextView
-
-    @BindView(R.id.view_keys_backup_banner_close_group)
-    lateinit var close: View
-
-    @BindView(R.id.view_keys_backup_banner_loading)
-    lateinit var loading: View
-
     var delegate: Delegate? = null
     private var state: State = State.Initial
 
+    private lateinit var views: ViewKeysBackupBannerBinding
+
     init {
         setupView()
         DefaultSharedPreferences.getInstance(context).edit {
@@ -100,8 +88,7 @@ class KeysBackupBanner @JvmOverloads constructor(
         }
     }
 
-    @OnClick(R.id.view_keys_backup_banner_close)
-    internal fun onCloseClicked() {
+    private fun onCloseClicked() {
         state.let {
             when (it) {
                 is State.Setup   -> {
@@ -133,11 +120,12 @@ class KeysBackupBanner @JvmOverloads constructor(
 
     private fun setupView() {
         inflate(context, R.layout.view_keys_backup_banner, this)
-        ButterKnife.bind(this)
 
         setOnClickListener(this)
-        textView1.setOnClickListener(this)
-        textView2.setOnClickListener(this)
+        views = ViewKeysBackupBannerBinding.bind(this)
+        views.viewKeysBackupBannerText1.setOnClickListener(this)
+        views.viewKeysBackupBannerText2.setOnClickListener(this)
+        views.viewKeysBackupBannerClose.setOnClickListener { onCloseClicked() }
     }
 
     private fun renderInitial() {
@@ -156,10 +144,10 @@ class KeysBackupBanner @JvmOverloads constructor(
         } else {
             isVisible = true
 
-            textView1.setText(R.string.secure_backup_banner_setup_line1)
-            textView2.isVisible = true
-            textView2.setText(R.string.secure_backup_banner_setup_line2)
-            close.isVisible = true
+            views.viewKeysBackupBannerText1.setText(R.string.secure_backup_banner_setup_line1)
+            views.viewKeysBackupBannerText2.isVisible = true
+            views.viewKeysBackupBannerText2.setText(R.string.secure_backup_banner_setup_line2)
+            views.viewKeysBackupBannerCloseGroup.isVisible = true
         }
     }
 
@@ -169,10 +157,10 @@ class KeysBackupBanner @JvmOverloads constructor(
         } else {
             isVisible = true
 
-            textView1.setText(R.string.keys_backup_banner_recover_line1)
-            textView2.isVisible = true
-            textView2.setText(R.string.keys_backup_banner_recover_line2)
-            close.isVisible = true
+            views.viewKeysBackupBannerText1.setText(R.string.keys_backup_banner_recover_line1)
+            views.viewKeysBackupBannerText2.isVisible = true
+            views.viewKeysBackupBannerText2.setText(R.string.keys_backup_banner_recover_line2)
+            views.viewKeysBackupBannerCloseGroup.isVisible = true
         }
     }
 
@@ -182,28 +170,28 @@ class KeysBackupBanner @JvmOverloads constructor(
         } else {
             isVisible = true
 
-            textView1.setText(R.string.keys_backup_banner_update_line1)
-            textView2.isVisible = true
-            textView2.setText(R.string.keys_backup_banner_update_line2)
-            close.isVisible = true
+            views.viewKeysBackupBannerText1.setText(R.string.keys_backup_banner_update_line1)
+            views.viewKeysBackupBannerText2.isVisible = true
+            views.viewKeysBackupBannerText2.setText(R.string.keys_backup_banner_update_line2)
+            views.viewKeysBackupBannerCloseGroup.isVisible = true
         }
     }
 
     private fun renderBackingUp() {
         isVisible = true
-        textView1.setText(R.string.secure_backup_banner_setup_line1)
-        textView2.isVisible = true
-        textView2.setText(R.string.keys_backup_banner_in_progress)
-        loading.isVisible = true
+        views.viewKeysBackupBannerText1.setText(R.string.secure_backup_banner_setup_line1)
+        views.viewKeysBackupBannerText2.isVisible = true
+        views.viewKeysBackupBannerText2.setText(R.string.keys_backup_banner_in_progress)
+        views.viewKeysBackupBannerLoading.isVisible = true
     }
 
     /**
      * Hide all views that are not visible in all state
      */
     private fun hideAll() {
-        textView2.isVisible = false
-        close.isVisible = false
-        loading.isVisible = false
+        views.viewKeysBackupBannerText2.isVisible = false
+        views.viewKeysBackupBannerCloseGroup.isVisible = false
+        views.viewKeysBackupBannerLoading.isVisible = false
     }
 
     /**

vector/src/main/java/im/vector/app/core/ui/views/NotificationAreaView.kt

@@ -27,8 +27,9 @@ import androidx.core.text.italic
 import im.vector.app.R
 import im.vector.app.core.error.ResourceLimitErrorFormatter
 import im.vector.app.core.utils.DimensionConverter
+import im.vector.app.databinding.ViewNotificationAreaBinding
 import im.vector.app.features.themes.ThemeUtils
-import kotlinx.android.synthetic.main.view_notification_area.view.*
+
 import me.gujun.android.span.span
 import me.saket.bettermovementmethod.BetterLinkMovementMethod
 import org.matrix.android.sdk.api.failure.MatrixError
@@ -48,6 +49,8 @@ class NotificationAreaView @JvmOverloads constructor(
     var delegate: Delegate? = null
     private var state: State = State.Initial
 
+    private lateinit var views : ViewNotificationAreaBinding
+
     init {
         setupView()
     }
@@ -78,27 +81,28 @@ class NotificationAreaView @JvmOverloads constructor(
 
     private fun setupView() {
         inflate(context, R.layout.view_notification_area, this)
+        views = ViewNotificationAreaBinding.bind(this)
         minimumHeight = DimensionConverter(resources).dpToPx(48)
     }
 
     private fun cleanUp() {
-        roomNotificationMessage.setOnClickListener(null)
-        roomNotificationIcon.setOnClickListener(null)
+        views.roomNotificationMessage.setOnClickListener(null)
+        views.roomNotificationIcon.setOnClickListener(null)
         setBackgroundColor(Color.TRANSPARENT)
-        roomNotificationMessage.text = null
-        roomNotificationIcon.setImageResource(0)
+        views.roomNotificationMessage.text = null
+        views.roomNotificationIcon.setImageResource(0)
     }
 
     private fun renderNoPermissionToPost() {
         visibility = View.VISIBLE
-        roomNotificationIcon.setImageDrawable(null)
+        views.roomNotificationIcon.setImageDrawable(null)
         val message = span {
             italic {
                 +resources.getString(R.string.room_do_not_have_permission_to_post)
             }
         }
-        roomNotificationMessage.text = message
-        roomNotificationMessage.setTextColor(ThemeUtils.getColor(context, R.attr.riotx_text_secondary))
+        views.roomNotificationMessage.text = message
+        views.roomNotificationMessage.setTextColor(ThemeUtils.getColor(context, R.attr.riotx_text_secondary))
     }
 
     private fun renderResourceLimitExceededError(state: State.ResourceLimitExceededError) {
@@ -114,16 +118,16 @@ class NotificationAreaView @JvmOverloads constructor(
             formatterMode = ResourceLimitErrorFormatter.Mode.Hard
         }
         val message = resourceLimitErrorFormatter.format(state.matrixError, formatterMode, clickable = true)
-        roomNotificationMessage.setTextColor(Color.WHITE)
-        roomNotificationMessage.text = message
-        roomNotificationMessage.movementMethod = LinkMovementMethod.getInstance()
-        roomNotificationMessage.setLinkTextColor(Color.WHITE)
+        views.roomNotificationMessage.setTextColor(Color.WHITE)
+        views.roomNotificationMessage.text = message
+        views.roomNotificationMessage.movementMethod = LinkMovementMethod.getInstance()
+        views.roomNotificationMessage.setLinkTextColor(Color.WHITE)
         setBackgroundColor(ContextCompat.getColor(context, backgroundColor))
     }
 
     private fun renderTombstone(state: State.Tombstone) {
         visibility = View.VISIBLE
-        roomNotificationIcon.setImageResource(R.drawable.error)
+        views.roomNotificationIcon.setImageResource(R.drawable.error)
         val message = span {
             +resources.getString(R.string.room_tombstone_versioned_description)
             +"\n"
@@ -132,8 +136,8 @@ class NotificationAreaView @JvmOverloads constructor(
                 onClick = { delegate?.onTombstoneEventClicked(state.tombstoneEvent) }
             }
         }
-        roomNotificationMessage.movementMethod = BetterLinkMovementMethod.getInstance()
-        roomNotificationMessage.text = message
+        views.roomNotificationMessage.movementMethod = BetterLinkMovementMethod.getInstance()
+        views.roomNotificationMessage.text = message
     }
 
     private fun renderDefault() {

vector/src/main/java/im/vector/app/core/ui/views/PasswordStrengthBar.kt

@@ -17,14 +17,11 @@ package im.vector.app.core.ui.views
 
 import android.content.Context
 import android.util.AttributeSet
-import android.view.LayoutInflater
-import android.view.View
 import android.widget.LinearLayout
 import androidx.annotation.IntRange
-import butterknife.BindColor
-import butterknife.BindView
-import butterknife.ButterKnife
+import androidx.core.content.ContextCompat
 import im.vector.app.R
+import im.vector.app.databinding.ViewPasswordStrengthBarBinding
 
 /**
  * A password strength bar custom widget
@@ -41,37 +38,13 @@ class PasswordStrengthBar @JvmOverloads constructor(
         defStyleAttr: Int = 0)
     : LinearLayout(context, attrs, defStyleAttr) {
 
-    @BindView(R.id.password_strength_bar_1)
-    lateinit var bar1: View
+    private val views: ViewPasswordStrengthBarBinding
 
-    @BindView(R.id.password_strength_bar_2)
-    lateinit var bar2: View
-
-    @BindView(R.id.password_strength_bar_3)
-    lateinit var bar3: View
-
-    @BindView(R.id.password_strength_bar_4)
-    lateinit var bar4: View
-
-    @BindColor(R.color.password_strength_bar_undefined)
-    @JvmField
-    var colorBackground: Int = 0
-
-    @BindColor(R.color.password_strength_bar_weak)
-    @JvmField
-    var colorWeak: Int = 0
-
-    @BindColor(R.color.password_strength_bar_low)
-    @JvmField
-    var colorLow: Int = 0
-
-    @BindColor(R.color.password_strength_bar_ok)
-    @JvmField
-    var colorOk: Int = 0
-
-    @BindColor(R.color.password_strength_bar_strong)
-    @JvmField
-    var colorStrong: Int = 0
+    private val colorBackground = ContextCompat.getColor(context, R.color.password_strength_bar_undefined)
+    private val colorWeak = ContextCompat.getColor(context, R.color.password_strength_bar_weak)
+    private val colorLow = ContextCompat.getColor(context, R.color.password_strength_bar_low)
+    private val colorOk = ContextCompat.getColor(context, R.color.password_strength_bar_ok)
+    private val colorStrong = ContextCompat.getColor(context, R.color.password_strength_bar_strong)
 
     @IntRange(from = 0, to = 4)
     var strength = 0
@@ -80,43 +53,42 @@ class PasswordStrengthBar @JvmOverloads constructor(
 
             when (newValue) {
                 0 -> {
-                    bar1.setBackgroundColor(colorBackground)
-                    bar2.setBackgroundColor(colorBackground)
-                    bar3.setBackgroundColor(colorBackground)
-                    bar4.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar1.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar2.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar3.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar4.setBackgroundColor(colorBackground)
                 }
                 1 -> {
-                    bar1.setBackgroundColor(colorWeak)
-                    bar2.setBackgroundColor(colorBackground)
-                    bar3.setBackgroundColor(colorBackground)
-                    bar4.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar1.setBackgroundColor(colorWeak)
+                    views.passwordStrengthBar2.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar3.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar4.setBackgroundColor(colorBackground)
                 }
                 2 -> {
-                    bar1.setBackgroundColor(colorLow)
-                    bar2.setBackgroundColor(colorLow)
-                    bar3.setBackgroundColor(colorBackground)
-                    bar4.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar1.setBackgroundColor(colorLow)
+                    views.passwordStrengthBar2.setBackgroundColor(colorLow)
+                    views.passwordStrengthBar3.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar4.setBackgroundColor(colorBackground)
                 }
                 3 -> {
-                    bar1.setBackgroundColor(colorOk)
-                    bar2.setBackgroundColor(colorOk)
-                    bar3.setBackgroundColor(colorOk)
-                    bar4.setBackgroundColor(colorBackground)
+                    views.passwordStrengthBar1.setBackgroundColor(colorOk)
+                    views.passwordStrengthBar2.setBackgroundColor(colorOk)
+                    views.passwordStrengthBar3.setBackgroundColor(colorOk)
+                    views.passwordStrengthBar4.setBackgroundColor(colorBackground)
                 }
                 4 -> {
-                    bar1.setBackgroundColor(colorStrong)
-                    bar2.setBackgroundColor(colorStrong)
-                    bar3.setBackgroundColor(colorStrong)
-                    bar4.setBackgroundColor(colorStrong)
+                    views.passwordStrengthBar1.setBackgroundColor(colorStrong)
+                    views.passwordStrengthBar2.setBackgroundColor(colorStrong)
+                    views.passwordStrengthBar3.setBackgroundColor(colorStrong)
+                    views.passwordStrengthBar4.setBackgroundColor(colorStrong)
                 }
             }
         }
 
     init {
-        LayoutInflater.from(context)
-                .inflate(R.layout.view_password_strength_bar, this, true)
+        inflate(context, R.layout.view_password_strength_bar, this)
+        views = ViewPasswordStrengthBarBinding.bind(this)
         orientation = HORIZONTAL
-        ButterKnife.bind(this)
         strength = 0
     }
 }

vector/src/main/java/im/vector/app/core/ui/views/ReadReceiptsView.kt

@@ -23,10 +23,10 @@ import android.widget.ImageView
 import android.widget.LinearLayout
 import androidx.core.view.isVisible
 import im.vector.app.R
+import im.vector.app.databinding.ViewReadReceiptsBinding
 import im.vector.app.features.home.AvatarRenderer
 import im.vector.app.features.home.room.detail.timeline.item.ReadReceiptData
 import im.vector.app.features.home.room.detail.timeline.item.toMatrixItem
-import kotlinx.android.synthetic.main.view_read_receipts.view.*
 
 private const val MAX_RECEIPT_DISPLAYED = 5
 private const val MAX_RECEIPT_DESCRIBED = 3
@@ -37,12 +37,21 @@ class ReadReceiptsView @JvmOverloads constructor(
         defStyleAttr: Int = 0
 ) : LinearLayout(context, attrs, defStyleAttr) {
 
-    private val receiptAvatars: List<ImageView> by lazy {
-        listOf(receiptAvatar1, receiptAvatar2, receiptAvatar3, receiptAvatar4, receiptAvatar5)
-    }
+    private val views : ViewReadReceiptsBinding
 
     init {
         setupView()
+        views = ViewReadReceiptsBinding.bind(this)
+    }
+
+    private val receiptAvatars: List<ImageView> by lazy {
+        listOf(
+                views.receiptAvatar1,
+                views.receiptAvatar2,
+                views.receiptAvatar3,
+                views.receiptAvatar4,
+                views.receiptAvatar5
+        )
     }
 
     private fun setupView() {
@@ -69,12 +78,12 @@ class ReadReceiptsView @JvmOverloads constructor(
                     .take(MAX_RECEIPT_DESCRIBED)
 
             if (readReceipts.size > MAX_RECEIPT_DISPLAYED) {
-                receiptMore.visibility = View.VISIBLE
-                receiptMore.text = context.getString(
+                views.receiptMore.visibility = View.VISIBLE
+                views.receiptMore.text = context.getString(
                         R.string.x_plus, readReceipts.size - MAX_RECEIPT_DISPLAYED
                 )
             } else {
-                receiptMore.visibility = View.GONE
+                views.receiptMore.visibility = View.GONE
             }
             contentDescription = when (readReceipts.size) {
                 1    ->

vector/src/main/java/im/vector/app/core/utils/PermissionsTools.kt

@@ -285,7 +285,7 @@ private fun checkPermissions(permissionsToBeGrantedBitMap: Int,
     return isPermissionGranted
 }
 
-fun VectorBaseActivity.onPermissionDeniedSnackbar(@StringRes rationaleMessage: Int) {
+fun VectorBaseActivity<*>.onPermissionDeniedSnackbar(@StringRes rationaleMessage: Int) {
     showSnackbar(getString(rationaleMessage), R.string.settings) {
         openAppSettingsPage(this)
     }

vector/src/main/java/im/vector/app/features/MainActivity.kt

@@ -30,6 +30,7 @@ import im.vector.app.core.error.ErrorFormatter
 import im.vector.app.core.extensions.startSyncing
 import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.core.utils.deleteAllFiles
+import im.vector.app.databinding.FragmentLoadingBinding
 import im.vector.app.features.home.HomeActivity
 import im.vector.app.features.home.ShortcutsHandler
 import im.vector.app.features.login.LoginActivity
@@ -42,7 +43,7 @@ import im.vector.app.features.settings.VectorPreferences
 import im.vector.app.features.signout.hard.SignedOutActivity
 import im.vector.app.features.signout.soft.SoftLogoutActivity
 import im.vector.app.features.ui.UiStateRepository
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
@@ -66,7 +67,7 @@ data class MainActivityArgs(
  * This Activity, when started with argument, is also doing some cleanup when user signs out,
  * clears cache, is logged out, or is soft logged out
  */
-class MainActivity : VectorBaseActivity(), UnlockedActivity {
+class MainActivity : VectorBaseActivity<FragmentLoadingBinding>(), UnlockedActivity {
 
     companion object {
         private const val EXTRA_ARGS = "EXTRA_ARGS"
@@ -83,6 +84,8 @@ class MainActivity : VectorBaseActivity(), UnlockedActivity {
         }
     }
 
+    override fun getBinding() = FragmentLoadingBinding.inflate(layoutInflater)
+
     private lateinit var args: MainActivityArgs
 
     @Inject lateinit var notificationDrawerManager: NotificationDrawerManager

vector/src/main/java/im/vector/app/features/attachments/AttachmentTypeSelectorView.kt

@@ -30,7 +30,6 @@ import android.view.animation.AnimationSet
 import android.view.animation.OvershootInterpolator
 import android.view.animation.ScaleAnimation
 import android.view.animation.TranslateAnimation
-import android.widget.FrameLayout
 import android.widget.ImageButton
 import android.widget.LinearLayout
 import android.widget.PopupWindow
@@ -42,6 +41,7 @@ import im.vector.app.core.extensions.getMeasurements
 import im.vector.app.core.utils.PERMISSIONS_EMPTY
 import im.vector.app.core.utils.PERMISSIONS_FOR_PICKING_CONTACT
 import im.vector.app.core.utils.PERMISSIONS_FOR_TAKING_PHOTO
+import im.vector.app.databinding.ViewAttachmentTypeSelectorBinding
 import im.vector.app.features.attachments.AttachmentTypeSelectorView.Callback
 import kotlin.math.max
 
@@ -62,25 +62,19 @@ class AttachmentTypeSelectorView(context: Context,
 
     private val iconColorGenerator = ColorGenerator.MATERIAL
 
-    private var galleryButton: ImageButton
-    private var cameraButton: ImageButton
-    private var fileButton: ImageButton
-    private var stickersButton: ImageButton
-    private var audioButton: ImageButton
-    private var contactButton: ImageButton
+    private val views: ViewAttachmentTypeSelectorBinding
 
     private var anchor: View? = null
 
     init {
-        val root = FrameLayout(context)
-        val layout = inflater.inflate(R.layout.view_attachment_type_selector, root, true)
-        galleryButton = layout.findViewById<ImageButton>(R.id.attachmentGalleryButton).configure(Type.GALLERY)
-        cameraButton = layout.findViewById<ImageButton>(R.id.attachmentCameraButton).configure(Type.CAMERA)
-        fileButton = layout.findViewById<ImageButton>(R.id.attachmentFileButton).configure(Type.FILE)
-        stickersButton = layout.findViewById<ImageButton>(R.id.attachmentStickersButton).configure(Type.STICKER)
-        audioButton = layout.findViewById<ImageButton>(R.id.attachmentAudioButton).configure(Type.AUDIO)
-        contactButton = layout.findViewById<ImageButton>(R.id.attachmentContactButton).configure(Type.CONTACT)
-        contentView = root
+        contentView = inflater.inflate(R.layout.view_attachment_type_selector, null, false)
+        views = ViewAttachmentTypeSelectorBinding.bind(contentView)
+        views.attachmentGalleryButton.configure(Type.GALLERY)
+        views.attachmentCameraButton.configure(Type.CAMERA)
+        views.attachmentFileButton.configure(Type.FILE)
+        views.attachmentStickersButton.configure(Type.STICKER)
+        views.attachmentAudioButton.configure(Type.AUDIO)
+        views.attachmentContactButton.configure(Type.CONTACT)
         width = LinearLayout.LayoutParams.MATCH_PARENT
         height = LinearLayout.LayoutParams.WRAP_CONTENT
         animationStyle = 0
@@ -108,12 +102,12 @@ class AttachmentTypeSelectorView(context: Context,
         contentView.doOnNextLayout {
             animateWindowInCircular(anchor, contentView)
         }
-        animateButtonIn(galleryButton, ANIMATION_DURATION / 2)
-        animateButtonIn(cameraButton, ANIMATION_DURATION / 2)
-        animateButtonIn(fileButton, ANIMATION_DURATION / 4)
-        animateButtonIn(audioButton, ANIMATION_DURATION / 2)
-        animateButtonIn(contactButton, ANIMATION_DURATION / 4)
-        animateButtonIn(stickersButton, 0)
+        animateButtonIn(views.attachmentGalleryButton, ANIMATION_DURATION / 2)
+        animateButtonIn(views.attachmentCameraButton, ANIMATION_DURATION / 2)
+        animateButtonIn(views.attachmentFileButton, ANIMATION_DURATION / 4)
+        animateButtonIn(views.attachmentAudioButton, ANIMATION_DURATION / 2)
+        animateButtonIn(views.attachmentContactButton, ANIMATION_DURATION / 4)
+        animateButtonIn(views.attachmentStickersButton, 0)
     }
 
     override fun dismiss() {

vector/src/main/java/im/vector/app/features/attachments/preview/AttachmentsPreviewActivity.kt

@@ -24,10 +24,11 @@ import im.vector.app.R
 import im.vector.app.core.extensions.addFragment
 import im.vector.app.core.platform.ToolbarConfigurable
 import im.vector.app.core.platform.VectorBaseActivity
+import im.vector.app.databinding.ActivitySimpleBinding
 import im.vector.app.features.themes.ActivityOtherThemes
 import org.matrix.android.sdk.api.session.content.ContentAttachmentData
 
-class AttachmentsPreviewActivity : VectorBaseActivity(), ToolbarConfigurable {
+class AttachmentsPreviewActivity : VectorBaseActivity<ActivitySimpleBinding>(), ToolbarConfigurable {
 
     companion object {
         private const val EXTRA_FRAGMENT_ARGS = "EXTRA_FRAGMENT_ARGS"
@@ -51,7 +52,9 @@ class AttachmentsPreviewActivity : VectorBaseActivity(), ToolbarConfigurable {
 
     override fun getOtherThemes() = ActivityOtherThemes.AttachmentsPreview
 
-    override fun getLayoutRes() = R.layout.activity_simple
+    override fun getBinding() = ActivitySimpleBinding.inflate(layoutInflater)
+
+    override fun getCoordinatorLayout() = views.coordinatorLayout
 
     override fun initUiAndData() {
         if (isFirstCreation()) {

vector/src/main/java/im/vector/app/features/attachments/preview/AttachmentsPreviewFragment.kt

@@ -21,6 +21,7 @@ import android.app.Activity.RESULT_CANCELED
 import android.app.Activity.RESULT_OK
 import android.os.Bundle
 import android.os.Parcelable
+import android.view.LayoutInflater
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
@@ -45,9 +46,9 @@ import im.vector.app.core.resources.ColorProvider
 import im.vector.app.core.utils.OnSnapPositionChangeListener
 import im.vector.app.core.utils.SnapOnScrollListener
 import im.vector.app.core.utils.attachSnapHelperWithListener
+import im.vector.app.databinding.FragmentAttachmentsPreviewBinding
 import im.vector.app.features.media.createUCropWithDefaultSettings
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.fragment_attachments_preview.*
+import kotlinx.parcelize.Parcelize
 import org.matrix.android.sdk.api.extensions.orFalse
 import org.matrix.android.sdk.api.session.content.ContentAttachmentData
 import java.io.File
@@ -62,19 +63,21 @@ class AttachmentsPreviewFragment @Inject constructor(
         private val attachmentMiniaturePreviewController: AttachmentMiniaturePreviewController,
         private val attachmentBigPreviewController: AttachmentBigPreviewController,
         private val colorProvider: ColorProvider
-) : VectorBaseFragment(), AttachmentMiniaturePreviewController.Callback {
+) : VectorBaseFragment<FragmentAttachmentsPreviewBinding>(), AttachmentMiniaturePreviewController.Callback {
 
     private val fragmentArgs: AttachmentsPreviewArgs by args()
     private val viewModel: AttachmentsPreviewViewModel by fragmentViewModel()
 
-    override fun getLayoutResId() = R.layout.fragment_attachments_preview
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentAttachmentsPreviewBinding {
+        return FragmentAttachmentsPreviewBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         applyInsets()
         setupRecyclerViews()
-        setupToolbar(attachmentPreviewerToolbar)
-        attachmentPreviewerSendButton.setOnClickListener {
+        setupToolbar(views.attachmentPreviewerToolbar)
+        views.attachmentPreviewerSendButton.setOnClickListener {
             setResultAndFinish()
         }
     }
@@ -119,10 +122,10 @@ class AttachmentsPreviewFragment @Inject constructor(
     override fun getMenuRes() = R.menu.vector_attachments_preview
 
     override fun onDestroyView() {
-        super.onDestroyView()
-        attachmentPreviewerMiniatureList.cleanup()
-        attachmentPreviewerBigList.cleanup()
+        views.attachmentPreviewerMiniatureList.cleanup()
+        views.attachmentPreviewerBigList.cleanup()
         attachmentMiniaturePreviewController.callback = null
+        super.onDestroyView()
     }
 
     override fun invalidate() = withState(viewModel) { state ->
@@ -133,9 +136,9 @@ class AttachmentsPreviewFragment @Inject constructor(
         } else {
             attachmentMiniaturePreviewController.setData(state)
             attachmentBigPreviewController.setData(state)
-            attachmentPreviewerBigList.scrollToPosition(state.currentAttachmentIndex)
-            attachmentPreviewerMiniatureList.scrollToPosition(state.currentAttachmentIndex)
-            attachmentPreviewerSendImageOriginalSize.text = resources.getQuantityString(R.plurals.send_images_with_original_size, state.attachments.size)
+            views.attachmentPreviewerBigList.scrollToPosition(state.currentAttachmentIndex)
+            views.attachmentPreviewerMiniatureList.scrollToPosition(state.currentAttachmentIndex)
+            views.attachmentPreviewerSendImageOriginalSize.text = resources.getQuantityString(R.plurals.send_images_with_original_size, state.attachments.size)
         }
     }
 
@@ -146,17 +149,17 @@ class AttachmentsPreviewFragment @Inject constructor(
     private fun setResultAndFinish() = withState(viewModel) {
         (requireActivity() as? AttachmentsPreviewActivity)?.setResultAndFinish(
                 it.attachments,
-                attachmentPreviewerSendImageOriginalSize.isChecked
+                views.attachmentPreviewerSendImageOriginalSize.isChecked
         )
     }
 
     private fun applyInsets() {
         view?.systemUiVisibility = View.SYSTEM_UI_FLAG_LAYOUT_STABLE or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
-        ViewCompat.setOnApplyWindowInsetsListener(attachmentPreviewerBottomContainer) { v, insets ->
+        ViewCompat.setOnApplyWindowInsetsListener(views.attachmentPreviewerBottomContainer) { v, insets ->
             v.updatePadding(bottom = insets.systemWindowInsetBottom)
             insets
         }
-        ViewCompat.setOnApplyWindowInsetsListener(attachmentPreviewerToolbar) { v, insets ->
+        ViewCompat.setOnApplyWindowInsetsListener(views.attachmentPreviewerToolbar) { v, insets ->
             v.updateLayoutParams<ViewGroup.MarginLayoutParams> {
                 topMargin = insets.systemWindowInsetTop
             }
@@ -180,13 +183,13 @@ class AttachmentsPreviewFragment @Inject constructor(
     private fun setupRecyclerViews() {
         attachmentMiniaturePreviewController.callback = this
 
-        attachmentPreviewerMiniatureList.let {
+        views.attachmentPreviewerMiniatureList.let {
             it.layoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
             it.setHasFixedSize(true)
             it.adapter = attachmentMiniaturePreviewController.adapter
         }
 
-        attachmentPreviewerBigList.let {
+        views.attachmentPreviewerBigList.let {
             it.layoutManager = LinearLayoutManager(context, LinearLayoutManager.HORIZONTAL, false)
             it.attachSnapHelperWithListener(
                     PagerSnapHelper(),

vector/src/main/java/im/vector/app/features/call/CallControlsBottomSheet.kt

@@ -17,18 +17,23 @@
 package im.vector.app.features.call
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.activityViewModel
 import im.vector.app.R
 import im.vector.app.core.platform.VectorBaseBottomSheetDialogFragment
-import kotlinx.android.synthetic.main.bottom_sheet_call_controls.*
+import im.vector.app.databinding.BottomSheetCallControlsBinding
+
 import me.gujun.android.span.span
 
-class CallControlsBottomSheet : VectorBaseBottomSheetDialogFragment() {
-    override fun getLayoutResId() = R.layout.bottom_sheet_call_controls
+class CallControlsBottomSheet : VectorBaseBottomSheetDialogFragment<BottomSheetCallControlsBinding>() {
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetCallControlsBinding {
+        return BottomSheetCallControlsBinding.inflate(inflater, container, false)
+    }
 
     private val callViewModel: VectorCallViewModel by activityViewModel()
 
@@ -39,16 +44,16 @@ class CallControlsBottomSheet : VectorBaseBottomSheetDialogFragment() {
             renderState(it)
         }
 
-        callControlsSoundDevice.clickableView.debouncedClicks {
+        views.callControlsSoundDevice.views.itemVerificationClickableZone.debouncedClicks {
             callViewModel.handle(VectorCallViewActions.SwitchSoundDevice)
         }
 
-        callControlsSwitchCamera.clickableView.debouncedClicks {
+        views.callControlsSwitchCamera.views.itemVerificationClickableZone.debouncedClicks {
             callViewModel.handle(VectorCallViewActions.ToggleCamera)
             dismiss()
         }
 
-        callControlsToggleSDHD.clickableView.debouncedClicks {
+        views.callControlsToggleSDHD.views.itemVerificationClickableZone.debouncedClicks {
             callViewModel.handle(VectorCallViewActions.ToggleHDSD)
             dismiss()
         }
@@ -109,30 +114,30 @@ class CallControlsBottomSheet : VectorBaseBottomSheetDialogFragment() {
     }
 
     private fun renderState(state: VectorCallViewState) {
-        callControlsSoundDevice.title = getString(R.string.call_select_sound_device)
-        callControlsSoundDevice.subTitle = when (state.soundDevice) {
+        views.callControlsSoundDevice.title = getString(R.string.call_select_sound_device)
+        views.callControlsSoundDevice.subTitle = when (state.soundDevice) {
             CallAudioManager.SoundDevice.PHONE            -> getString(R.string.sound_device_phone)
             CallAudioManager.SoundDevice.SPEAKER          -> getString(R.string.sound_device_speaker)
             CallAudioManager.SoundDevice.HEADSET          -> getString(R.string.sound_device_headset)
             CallAudioManager.SoundDevice.WIRELESS_HEADSET -> getString(R.string.sound_device_wireless_headset)
         }
 
-        callControlsSwitchCamera.isVisible = state.isVideoCall && state.canSwitchCamera
-        callControlsSwitchCamera.subTitle = getString(if (state.isFrontCamera) R.string.call_camera_front else R.string.call_camera_back)
+        views.callControlsSwitchCamera.isVisible = state.isVideoCall && state.canSwitchCamera
+        views.callControlsSwitchCamera.subTitle = getString(if (state.isFrontCamera) R.string.call_camera_front else R.string.call_camera_back)
 
         if (state.isVideoCall) {
-            callControlsToggleSDHD.isVisible = true
+            views.callControlsToggleSDHD.isVisible = true
             if (state.isHD) {
-                callControlsToggleSDHD.title = getString(R.string.call_format_turn_hd_off)
-                callControlsToggleSDHD.subTitle = null
-                callControlsToggleSDHD.leftIcon = ContextCompat.getDrawable(requireContext(), R.drawable.ic_hd_disabled)
+                views.callControlsToggleSDHD.title = getString(R.string.call_format_turn_hd_off)
+                views.callControlsToggleSDHD.subTitle = null
+                views.callControlsToggleSDHD.leftIcon = ContextCompat.getDrawable(requireContext(), R.drawable.ic_hd_disabled)
             } else {
-                callControlsToggleSDHD.title = getString(R.string.call_format_turn_hd_on)
-                callControlsToggleSDHD.subTitle = null
-                callControlsToggleSDHD.leftIcon = ContextCompat.getDrawable(requireContext(), R.drawable.ic_hd)
+                views.callControlsToggleSDHD.title = getString(R.string.call_format_turn_hd_on)
+                views.callControlsToggleSDHD.subTitle = null
+                views.callControlsToggleSDHD.leftIcon = ContextCompat.getDrawable(requireContext(), R.drawable.ic_hd)
             }
         } else {
-            callControlsToggleSDHD.isVisible = false
+            views.callControlsToggleSDHD.isVisible = false
         }
     }
 }

vector/src/main/java/im/vector/app/features/call/CallControlsView.kt

@@ -18,16 +18,11 @@ package im.vector.app.features.call
 
 import android.content.Context
 import android.util.AttributeSet
-import android.view.ViewGroup
-import android.widget.ImageView
 import android.widget.LinearLayout
-import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.view.isVisible
-import butterknife.BindView
-import butterknife.ButterKnife
-import butterknife.OnClick
 import im.vector.app.R
-import kotlinx.android.synthetic.main.view_call_controls.view.*
+import im.vector.app.databinding.ViewCallControlsBinding
+
 import org.matrix.android.sdk.api.session.call.CallState
 import org.webrtc.PeerConnection
 
@@ -35,115 +30,100 @@ class CallControlsView @JvmOverloads constructor(
         context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
 ) : LinearLayout(context, attrs, defStyleAttr) {
 
+    private val views: ViewCallControlsBinding
+
     var interactionListener: InteractionListener? = null
 
-    @BindView(R.id.ringingControls)
-    lateinit var ringingControls: ViewGroup
-
-    @BindView(R.id.iv_icr_accept_call)
-    lateinit var ringingControlAccept: ImageView
-
-    @BindView(R.id.iv_icr_end_call)
-    lateinit var ringingControlDecline: ImageView
-
-    @BindView(R.id.connectedControls)
-    lateinit var connectedControls: ViewGroup
-
-    @BindView(R.id.iv_mute_toggle)
-    lateinit var muteIcon: ImageView
-
-    @BindView(R.id.iv_video_toggle)
-    lateinit var videoToggleIcon: ImageView
-
     init {
-        ConstraintLayout.inflate(context, R.layout.view_call_controls, this)
+        inflate(context, R.layout.view_call_controls, this)
         // layoutParams = FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT)
-        ButterKnife.bind(this)
+        views = ViewCallControlsBinding.bind(this)
+
+        views.ringingControlAccept.setOnClickListener { acceptIncomingCall() }
+        views.ringingControlDecline.setOnClickListener { declineIncomingCall() }
+        views.ivEndCall.setOnClickListener { endOngoingCall() }
+        views.muteIcon.setOnClickListener { toggleMute() }
+        views.videoToggleIcon.setOnClickListener { toggleVideo() }
+        views.ivLeftMiniControl.setOnClickListener { returnToChat() }
+        views.ivMore.setOnClickListener { moreControlOption() }
     }
 
-    @OnClick(R.id.iv_icr_accept_call)
-    fun acceptIncomingCall() {
+    private fun acceptIncomingCall() {
         interactionListener?.didAcceptIncomingCall()
     }
 
-    @OnClick(R.id.iv_icr_end_call)
-    fun declineIncomingCall() {
+    private fun declineIncomingCall() {
         interactionListener?.didDeclineIncomingCall()
     }
 
-    @OnClick(R.id.iv_end_call)
-    fun endOngoingCall() {
+    private fun endOngoingCall() {
         interactionListener?.didEndCall()
     }
 
-    @OnClick(R.id.iv_mute_toggle)
-    fun toggleMute() {
+    private fun toggleMute() {
         interactionListener?.didTapToggleMute()
     }
 
-    @OnClick(R.id.iv_video_toggle)
-    fun toggleVideo() {
+    private fun toggleVideo() {
         interactionListener?.didTapToggleVideo()
     }
 
-    @OnClick(R.id.iv_leftMiniControl)
-    fun returnToChat() {
+    private fun returnToChat() {
         interactionListener?.returnToChat()
     }
 
-    @OnClick(R.id.iv_more)
-    fun moreControlOption() {
+    private fun moreControlOption() {
         interactionListener?.didTapMore()
     }
 
     fun updateForState(state: VectorCallViewState) {
         val callState = state.callState.invoke()
         if (state.isAudioMuted) {
-            muteIcon.setImageResource(R.drawable.ic_microphone_off)
-            muteIcon.contentDescription = resources.getString(R.string.a11y_unmute_microphone)
+            views.muteIcon.setImageResource(R.drawable.ic_microphone_off)
+            views.muteIcon.contentDescription = resources.getString(R.string.a11y_unmute_microphone)
         } else {
-            muteIcon.setImageResource(R.drawable.ic_microphone_on)
-            muteIcon.contentDescription = resources.getString(R.string.a11y_mute_microphone)
+            views.muteIcon.setImageResource(R.drawable.ic_microphone_on)
+            views.muteIcon.contentDescription = resources.getString(R.string.a11y_mute_microphone)
         }
         if (state.isVideoEnabled) {
-            videoToggleIcon.setImageResource(R.drawable.ic_video)
-            videoToggleIcon.contentDescription = resources.getString(R.string.a11y_stop_camera)
+            views.videoToggleIcon.setImageResource(R.drawable.ic_video)
+            views.videoToggleIcon.contentDescription = resources.getString(R.string.a11y_stop_camera)
         } else {
-            videoToggleIcon.setImageResource(R.drawable.ic_video_off)
-            videoToggleIcon.contentDescription = resources.getString(R.string.a11y_start_camera)
+          views.videoToggleIcon.setImageResource(R.drawable.ic_video_off)
+            views.videoToggleIcon.contentDescription = resources.getString(R.string.a11y_start_camera)
         }
 
         when (callState) {
             is CallState.Idle,
             is CallState.Dialing,
             is CallState.Answering    -> {
-                ringingControls.isVisible = true
-                ringingControlAccept.isVisible = false
-                ringingControlDecline.isVisible = true
-                connectedControls.isVisible = false
+                views.ringingControls.isVisible = true
+                views.ringingControlAccept.isVisible = false
+                views.ringingControlDecline.isVisible = true
+                views.connectedControls.isVisible = false
             }
             is CallState.LocalRinging -> {
-                ringingControls.isVisible = true
-                ringingControlAccept.isVisible = true
-                ringingControlDecline.isVisible = true
-                connectedControls.isVisible = false
+                views.ringingControls.isVisible = true
+                views.ringingControlAccept.isVisible = true
+                views.ringingControlDecline.isVisible = true
+                views.connectedControls.isVisible = false
             }
             is CallState.Connected    -> {
                 if (callState.iceConnectionState == PeerConnection.PeerConnectionState.CONNECTED) {
-                    ringingControls.isVisible = false
-                    connectedControls.isVisible = true
-                    iv_video_toggle.isVisible = state.isVideoCall
+                    views.ringingControls.isVisible = false
+                    views.connectedControls.isVisible = true
+                    views.videoToggleIcon.isVisible = state.isVideoCall
                 } else {
-                    ringingControls.isVisible = true
-                    ringingControlAccept.isVisible = false
-                    ringingControlDecline.isVisible = true
-                    connectedControls.isVisible = false
+                    views.ringingControls.isVisible = true
+                    views.ringingControlAccept.isVisible = false
+                    views.ringingControlDecline.isVisible = true
+                    views.connectedControls.isVisible = false
                 }
             }
             is CallState.Terminated,
             null                      -> {
-                ringingControls.isVisible = false
-                connectedControls.isVisible = false
+                views.ringingControls.isVisible = false
+                views.connectedControls.isVisible = false
             }
         }
     }

vector/src/main/java/im/vector/app/features/call/VectorCallActivity.kt

@@ -32,7 +32,6 @@ import androidx.core.view.ViewCompat
 import androidx.core.view.isInvisible
 import androidx.core.view.isVisible
 import androidx.core.view.updatePadding
-import butterknife.BindView
 import com.airbnb.mvrx.Fail
 import com.airbnb.mvrx.MvRx
 import com.airbnb.mvrx.viewModel
@@ -45,12 +44,12 @@ import im.vector.app.core.utils.PERMISSIONS_FOR_AUDIO_IP_CALL
 import im.vector.app.core.utils.PERMISSIONS_FOR_VIDEO_IP_CALL
 import im.vector.app.core.utils.allGranted
 import im.vector.app.core.utils.checkPermissions
+import im.vector.app.databinding.ActivityCallBinding
 import im.vector.app.features.home.AvatarRenderer
 import im.vector.app.features.home.room.detail.RoomDetailActivity
 import im.vector.app.features.home.room.detail.RoomDetailArgs
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.activity_call.*
+import kotlinx.parcelize.Parcelize
 import org.matrix.android.sdk.api.session.call.CallState
 import org.matrix.android.sdk.api.session.call.EglUtils
 import org.matrix.android.sdk.api.session.call.MxCallDetail
@@ -58,7 +57,6 @@ import org.matrix.android.sdk.api.session.call.TurnServerResponse
 import org.webrtc.EglBase
 import org.webrtc.PeerConnection
 import org.webrtc.RendererCommon
-import org.webrtc.SurfaceViewRenderer
 import timber.log.Timber
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
@@ -72,9 +70,9 @@ data class CallArgs(
         val isVideoCall: Boolean
 ) : Parcelable
 
-class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionListener {
+class VectorCallActivity : VectorBaseActivity<ActivityCallBinding>(), CallControlsView.InteractionListener {
 
-    override fun getLayoutRes() = R.layout.activity_call
+    override fun getBinding() = ActivityCallBinding.inflate(layoutInflater)
 
     @Inject lateinit var avatarRenderer: AvatarRenderer
 
@@ -90,15 +88,6 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
 
     @Inject lateinit var viewModelFactory: VectorCallViewModel.Factory
 
-    @BindView(R.id.pip_video_view)
-    lateinit var pipRenderer: SurfaceViewRenderer
-
-    @BindView(R.id.fullscreen_video_view)
-    lateinit var fullscreenRenderer: SurfaceViewRenderer
-
-    @BindView(R.id.callControls)
-    lateinit var callControlsView: CallControlsView
-
     private var rootEglBase: EglBase? = null
 
     var systemUiVisibility = false
@@ -158,7 +147,7 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
         super.onCreate(savedInstanceState)
 
         // This will need to be refined
-        ViewCompat.setOnApplyWindowInsetsListener(constraintLayout) { v, insets ->
+        ViewCompat.setOnApplyWindowInsetsListener(views.constraintLayout) { v, insets ->
             v.updatePadding(bottom = if (systemUiVisibility) insets.systemWindowInsetBottom else 0)
             insets
         }
@@ -178,7 +167,7 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
             turnScreenOnAndKeyguardOff()
         }
 
-        constraintLayout.clicks()
+        views.constraintLayout.clicks()
                 .throttleFirst(300, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe { toggleUiSystemVisibility() }
@@ -210,10 +199,10 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
     }
 
     override fun onDestroy() {
-        peerConnectionManager.detachRenderers(listOf(pipRenderer, fullscreenRenderer))
+        peerConnectionManager.detachRenderers(listOf(views.pipRenderer, views.fullscreenRenderer))
         if (surfaceRenderersAreInitialized) {
-            pipRenderer.release()
-            fullscreenRenderer.release()
+            views.pipRenderer.release()
+            views.fullscreenRenderer.release()
         }
         turnScreenOffAndKeyguardOn()
         super.onDestroy()
@@ -228,54 +217,54 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
             return
         }
 
-        callControlsView.updateForState(state)
+        views.callControlsView.updateForState(state)
         val callState = state.callState.invoke()
-        callConnectingProgress.isVisible = false
+        views.callConnectingProgress.isVisible = false
         when (callState) {
             is CallState.Idle,
             is CallState.Dialing      -> {
-                callVideoGroup.isInvisible = true
-                callInfoGroup.isVisible = true
-                callStatusText.setText(R.string.call_ring)
+                views.callVideoGroup.isInvisible = true
+                views.callInfoGroup.isVisible = true
+                views.callStatusText.setText(R.string.call_ring)
                 configureCallInfo(state)
             }
 
             is CallState.LocalRinging -> {
-                callVideoGroup.isInvisible = true
-                callInfoGroup.isVisible = true
-                callStatusText.text = null
+                views.callVideoGroup.isInvisible = true
+                views.callInfoGroup.isVisible = true
+                views.callStatusText.text = null
                 configureCallInfo(state)
             }
 
             is CallState.Answering    -> {
-                callVideoGroup.isInvisible = true
-                callInfoGroup.isVisible = true
-                callStatusText.setText(R.string.call_connecting)
-                callConnectingProgress.isVisible = true
+                views.callVideoGroup.isInvisible = true
+                views.callInfoGroup.isVisible = true
+                views.callStatusText.setText(R.string.call_connecting)
+                views.callConnectingProgress.isVisible = true
                 configureCallInfo(state)
             }
             is CallState.Connected    -> {
                 if (callState.iceConnectionState == PeerConnection.PeerConnectionState.CONNECTED) {
                     if (callArgs.isVideoCall) {
-                        callVideoGroup.isVisible = true
-                        callInfoGroup.isVisible = false
-                        pip_video_view.isVisible = !state.isVideoCaptureInError
+                        views.callVideoGroup.isVisible = true
+                        views.callInfoGroup.isVisible = false
+                        views.pipRenderer.isVisible = !state.isVideoCaptureInError
                     } else {
-                        callVideoGroup.isInvisible = true
-                        callInfoGroup.isVisible = true
+                        views.callVideoGroup.isInvisible = true
+                        views.callInfoGroup.isVisible = true
                         configureCallInfo(state)
-                        callStatusText.text = null
+                        views.callStatusText.text = null
                     }
                 } else {
                     // This state is not final, if you change network, new candidates will be sent
-                    callVideoGroup.isInvisible = true
-                    callInfoGroup.isVisible = true
+                    views.callVideoGroup.isInvisible = true
+                    views.callInfoGroup.isVisible = true
                     configureCallInfo(state)
-                    callStatusText.setText(R.string.call_connecting)
-                    callConnectingProgress.isVisible = true
+                    views.callStatusText.setText(R.string.call_connecting)
+                    views.callConnectingProgress.isVisible = true
                 }
                 // ensure all attached?
-                peerConnectionManager.attachViewRenderers(pipRenderer, fullscreenRenderer, null)
+                peerConnectionManager.attachViewRenderers(views.pipRenderer, views.fullscreenRenderer, null)
             }
             is CallState.Terminated   -> {
                 finish()
@@ -287,14 +276,14 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
 
     private fun configureCallInfo(state: VectorCallViewState) {
         state.otherUserMatrixItem.invoke()?.let {
-            avatarRenderer.render(it, otherMemberAvatar)
-            participantNameText.text = it.getBestName()
-            callTypeText.setText(if (state.isVideoCall) R.string.action_video_call else R.string.action_voice_call)
+            avatarRenderer.render(it, views.otherMemberAvatar)
+            views.participantNameText.text = it.getBestName()
+            views.callTypeText.setText(if (state.isVideoCall) R.string.action_video_call else R.string.action_voice_call)
         }
     }
 
     private fun configureCallViews() {
-        callControlsView.interactionListener = this
+        views.callControlsView.interactionListener = this
     }
 
     override fun onRequestPermissionsResult(requestCode: Int, permissions: Array<out String>, grantResults: IntArray) {
@@ -314,21 +303,24 @@ class VectorCallActivity : VectorBaseActivity(), CallControlsView.InteractionLis
         }
 
         // Init Picture in Picture renderer
-        pipRenderer.init(rootEglBase!!.eglBaseContext, null)
-        pipRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT)
+        views.pipRenderer.init(rootEglBase!!.eglBaseContext, null)
+        views.pipRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT)
 
         // Init Full Screen renderer
-        fullscreenRenderer.init(rootEglBase!!.eglBaseContext, null)
-        fullscreenRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT)
+        views.fullscreenRenderer.init(rootEglBase!!.eglBaseContext, null)
+        views.fullscreenRenderer.setScalingType(RendererCommon.ScalingType.SCALE_ASPECT_FIT)
 
-        pipRenderer.setZOrderMediaOverlay(true)
-        pipRenderer.setEnableHardwareScaler(true /* enabled */)
-        fullscreenRenderer.setEnableHardwareScaler(true /* enabled */)
+        views.pipRenderer.setZOrderMediaOverlay(true)
+        views.pipRenderer.setEnableHardwareScaler(true /* enabled */)
+        views.fullscreenRenderer.setEnableHardwareScaler(true /* enabled */)
 
-        peerConnectionManager.attachViewRenderers(pipRenderer, fullscreenRenderer,
-                intent.getStringExtra(EXTRA_MODE)?.takeIf { isFirstCreation() })
+        peerConnectionManager.attachViewRenderers(
+                views.pipRenderer,
+                views.fullscreenRenderer,
+                intent.getStringExtra(EXTRA_MODE)?.takeIf { isFirstCreation() }
+        )
 
-        pipRenderer.setOnClickListener {
+        views.pipRenderer.setOnClickListener {
             callViewModel.handle(VectorCallViewActions.ToggleCamera)
         }
         surfaceRenderersAreInitialized = true

vector/src/main/java/im/vector/app/features/call/conference/VectorJitsiActivity.kt

@@ -20,7 +20,6 @@ import android.content.Context
 import android.content.Intent
 import android.os.Bundle
 import android.os.Parcelable
-import android.view.View
 import android.widget.FrameLayout
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.Fail
@@ -28,11 +27,10 @@ import com.airbnb.mvrx.MvRx
 import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.viewModel
 import com.facebook.react.modules.core.PermissionListener
-import im.vector.app.R
 import im.vector.app.core.di.ScreenComponent
 import im.vector.app.core.platform.VectorBaseActivity
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.activity_jitsi.*
+import im.vector.app.databinding.ActivityJitsiBinding
+import kotlinx.parcelize.Parcelize
 import org.jitsi.meet.sdk.JitsiMeetActivityDelegate
 import org.jitsi.meet.sdk.JitsiMeetActivityInterface
 import org.jitsi.meet.sdk.JitsiMeetConferenceOptions
@@ -42,7 +40,7 @@ import org.matrix.android.sdk.api.extensions.tryOrNull
 import java.net.URL
 import javax.inject.Inject
 
-class VectorJitsiActivity : VectorBaseActivity(), JitsiMeetActivityInterface, JitsiMeetViewListener {
+class VectorJitsiActivity : VectorBaseActivity<ActivityJitsiBinding>(), JitsiMeetActivityInterface, JitsiMeetViewListener {
 
     @Parcelize
     data class Args(
@@ -51,7 +49,7 @@ class VectorJitsiActivity : VectorBaseActivity(), JitsiMeetActivityInterface, Ji
             val enableVideo: Boolean
     ) : Parcelable
 
-    override fun getLayoutRes() = R.layout.activity_jitsi
+    override fun getBinding() = ActivityJitsiBinding.inflate(layoutInflater)
 
     @Inject lateinit var viewModelFactory: JitsiCallViewModel.Factory
 
@@ -76,7 +74,7 @@ class VectorJitsiActivity : VectorBaseActivity(), JitsiMeetActivityInterface, Ji
         super.initUiAndData()
         jitsiMeetView = JitsiMeetView(this)
         val params = FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT)
-        jitsi_layout.addView(jitsiMeetView, params)
+        views.jitsiLayout.addView(jitsiMeetView, params)
         jitsiMeetView?.listener = this
     }
 
@@ -84,13 +82,13 @@ class VectorJitsiActivity : VectorBaseActivity(), JitsiMeetActivityInterface, Ji
         when (viewState.widget) {
             is Fail    -> finish()
             is Success -> {
-                findViewById<View>(R.id.jitsi_progress_layout).isVisible = false
+                views.jitsiProgressLayout.isVisible = false
                 jitsiMeetView?.isVisible = true
                 configureJitsiView(viewState)
             }
             else       -> {
                 jitsiMeetView?.isVisible = false
-                findViewById<View>(R.id.jitsi_progress_layout).isVisible = true
+                views.jitsiProgressLayout.isVisible = true
             }
         }
     }

vector/src/main/java/im/vector/app/features/contactsbook/ContactsBookFragment.kt

@@ -17,7 +17,9 @@
 package im.vector.app.features.contactsbook
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.activityViewModel
@@ -29,12 +31,13 @@ import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.extensions.hideKeyboard
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentContactsBookBinding
 import im.vector.app.features.userdirectory.PendingInvitee
 import im.vector.app.features.userdirectory.UserListAction
 import im.vector.app.features.userdirectory.UserListSharedAction
 import im.vector.app.features.userdirectory.UserListSharedActionViewModel
 import im.vector.app.features.userdirectory.UserListViewModel
-import kotlinx.android.synthetic.main.fragment_contacts_book.*
+
 import org.matrix.android.sdk.api.session.identity.ThreePid
 import org.matrix.android.sdk.api.session.user.model.User
 import java.util.concurrent.TimeUnit
@@ -43,9 +46,12 @@ import javax.inject.Inject
 class ContactsBookFragment @Inject constructor(
         val contactsBookViewModelFactory: ContactsBookViewModel.Factory,
         private val contactsBookController: ContactsBookController
-) : VectorBaseFragment(), ContactsBookController.Callback {
+) : VectorBaseFragment<FragmentContactsBookBinding>(), ContactsBookController.Callback {
+
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentContactsBookBinding {
+        return FragmentContactsBookBinding.inflate(inflater, container, false)
+    }
 
-    override fun getLayoutResId() = R.layout.fragment_contacts_book
     private val viewModel: UserListViewModel by activityViewModel()
 
     // Use activityViewModel to avoid loading several times the data
@@ -64,7 +70,7 @@ class ContactsBookFragment @Inject constructor(
     }
 
     private fun setupConsentView() {
-        phoneBookSearchForMatrixContacts.setOnClickListener {
+        views.phoneBookSearchForMatrixContacts.setOnClickListener {
             withState(contactsBookViewModel) { state ->
                 AlertDialog.Builder(requireActivity())
                         .setTitle(R.string.identity_server_consent_dialog_title)
@@ -79,7 +85,7 @@ class ContactsBookFragment @Inject constructor(
     }
 
     private fun setupOnlyBoundContactsView() {
-        phoneBookOnlyBoundContacts.checkedChanges()
+        views.phoneBookOnlyBoundContacts.checkedChanges()
                 .subscribe {
                     contactsBookViewModel.handle(ContactsBookAction.OnlyBoundContacts(it))
                 }
@@ -87,7 +93,7 @@ class ContactsBookFragment @Inject constructor(
     }
 
     private fun setupFilterView() {
-        phoneBookFilter
+        views.phoneBookFilter
                 .textChanges()
                 .skipInitialValue()
                 .debounce(300, TimeUnit.MILLISECONDS)
@@ -98,25 +104,25 @@ class ContactsBookFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        phoneBookRecyclerView.cleanup()
+        views.phoneBookRecyclerView.cleanup()
         contactsBookController.callback = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
         contactsBookController.callback = this
-        phoneBookRecyclerView.configureWith(contactsBookController)
+        views.phoneBookRecyclerView.configureWith(contactsBookController)
     }
 
     private fun setupCloseView() {
-        phoneBookClose.debouncedClicks {
+        views.phoneBookClose.debouncedClicks {
             sharedActionViewModel.post(UserListSharedAction.GoBack)
         }
     }
 
     override fun invalidate() = withState(contactsBookViewModel) { state ->
-        phoneBookSearchForMatrixContacts.isVisible = state.filteredMappedContacts.isNotEmpty() && state.identityServerUrl != null && !state.userConsent
-        phoneBookOnlyBoundContacts.isVisible = state.isBoundRetrieved
+        views.phoneBookSearchForMatrixContacts.isVisible = state.filteredMappedContacts.isNotEmpty() && state.identityServerUrl != null && !state.userConsent
+        views.phoneBookOnlyBoundContacts.isVisible = state.isBoundRetrieved
         contactsBookController.setData(state)
     }
 

vector/src/main/java/im/vector/app/features/createdirect/CreateDirectRoomActivity.kt

@@ -51,7 +51,7 @@ import im.vector.app.features.userdirectory.UserListSharedAction
 import im.vector.app.features.userdirectory.UserListSharedActionViewModel
 import im.vector.app.features.userdirectory.UserListViewModel
 import im.vector.app.features.userdirectory.UserListViewState
-import kotlinx.android.synthetic.main.activity.*
+
 import org.matrix.android.sdk.api.failure.Failure
 import org.matrix.android.sdk.api.session.room.failure.CreateRoomFailure
 import java.net.HttpURLConnection
@@ -77,7 +77,7 @@ class CreateDirectRoomActivity : SimpleFragmentActivity(), UserListViewModel.Fac
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        toolbar.visibility = View.GONE
+        views.toolbar.visibility = View.GONE
 
         sharedActionViewModel = viewModelProvider.get(UserListSharedActionViewModel::class.java)
         sharedActionViewModel

vector/src/main/java/im/vector/app/features/createdirect/CreateDirectRoomByQrCodeFragment.kt

@@ -16,6 +16,8 @@
 
 package im.vector.app.features.createdirect
 
+import android.view.LayoutInflater
+import android.view.ViewGroup
 import android.widget.Toast
 import com.airbnb.mvrx.activityViewModel
 import com.google.zxing.Result
@@ -26,19 +28,22 @@ import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.PERMISSIONS_FOR_TAKING_PHOTO
 import im.vector.app.core.utils.checkPermissions
 import im.vector.app.core.utils.registerForPermissionsResult
+import im.vector.app.databinding.FragmentQrCodeScannerBinding
 import im.vector.app.features.userdirectory.PendingInvitee
-import kotlinx.android.synthetic.main.fragment_qr_code_scanner.*
+
 import me.dm7.barcodescanner.zxing.ZXingScannerView
 import org.matrix.android.sdk.api.session.permalinks.PermalinkData
 import org.matrix.android.sdk.api.session.permalinks.PermalinkParser
 import org.matrix.android.sdk.api.session.user.model.User
 import javax.inject.Inject
 
-class CreateDirectRoomByQrCodeFragment @Inject constructor() : VectorBaseFragment(), ZXingScannerView.ResultHandler {
+class CreateDirectRoomByQrCodeFragment @Inject constructor() : VectorBaseFragment<FragmentQrCodeScannerBinding>(), ZXingScannerView.ResultHandler {
 
     private val viewModel: CreateDirectRoomViewModel by activityViewModel()
 
-    override fun getLayoutResId() = R.layout.fragment_qr_code_scanner
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentQrCodeScannerBinding {
+        return FragmentQrCodeScannerBinding.inflate(inflater, container, false)
+    }
 
     private val openCameraActivityResultLauncher = registerForPermissionsResult { allGranted ->
         if (allGranted) {
@@ -48,14 +53,14 @@ class CreateDirectRoomByQrCodeFragment @Inject constructor() : VectorBaseFragmen
 
     private fun startCamera() {
         // Start camera on resume
-        scannerView.startCamera()
+        views.scannerView.startCamera()
     }
 
     override fun onResume() {
         super.onResume()
         view?.hideKeyboard()
         // Register ourselves as a handler for scan results.
-        scannerView.setResultHandler(this)
+        views.scannerView.setResultHandler(this)
         // Start camera on resume
         if (checkPermissions(PERMISSIONS_FOR_TAKING_PHOTO, requireActivity(), openCameraActivityResultLauncher)) {
             startCamera()
@@ -65,9 +70,9 @@ class CreateDirectRoomByQrCodeFragment @Inject constructor() : VectorBaseFragmen
     override fun onPause() {
         super.onPause()
         // Unregister ourselves as a handler for scan results.
-        scannerView.setResultHandler(null)
+        views.scannerView.setResultHandler(null)
         // Stop camera on pause
-        scannerView.stopCamera()
+        views.scannerView.stopCamera()
     }
 
     // Copied from https://github.com/markusfisch/BinaryEye/blob/

vector/src/main/java/im/vector/app/features/crypto/keysbackup/restore/KeysBackupRestoreFromKeyFragment.kt

@@ -17,42 +17,37 @@ package im.vector.app.features.crypto.keysbackup.restore
 
 import android.app.Activity
 import android.os.Bundle
-import android.text.Editable
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
-import android.widget.EditText
+import androidx.core.widget.doOnTextChanged
 import androidx.lifecycle.Observer
-import butterknife.BindView
-import butterknife.OnClick
-import butterknife.OnTextChanged
-import com.google.android.material.textfield.TextInputLayout
 import im.vector.app.R
 import im.vector.app.core.extensions.registerStartForActivityResult
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.startImportTextFromFileIntent
+import im.vector.app.databinding.FragmentKeysBackupRestoreFromKeyBinding
+
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import javax.inject.Inject
 
 class KeysBackupRestoreFromKeyFragment @Inject constructor()
-    : VectorBaseFragment() {
+    : VectorBaseFragment<FragmentKeysBackupRestoreFromKeyBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_keys_backup_restore_from_key
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentKeysBackupRestoreFromKeyBinding {
+        return FragmentKeysBackupRestoreFromKeyBinding.inflate(inflater, container, false)
+    }
 
     private lateinit var viewModel: KeysBackupRestoreFromKeyViewModel
     private lateinit var sharedViewModel: KeysBackupRestoreSharedViewModel
 
-    @BindView(R.id.keys_backup_key_enter_til)
-    lateinit var mKeyInputLayout: TextInputLayout
-
-    @BindView(R.id.keys_restore_key_enter_edittext)
-    lateinit var mKeyTextEdit: EditText
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         viewModel = fragmentViewModelProvider.get(KeysBackupRestoreFromKeyViewModel::class.java)
         sharedViewModel = activityViewModelProvider.get(KeysBackupRestoreSharedViewModel::class.java)
-        mKeyTextEdit.setText(viewModel.recoveryCode.value)
-        mKeyTextEdit.setOnEditorActionListener { _, actionId, _ ->
+        views.keyTextEdit.setText(viewModel.recoveryCode.value)
+        views.keyTextEdit.setOnEditorActionListener { _, actionId, _ ->
             if (actionId == EditorInfo.IME_ACTION_DONE) {
                 onRestoreFromKey()
                 return@setOnEditorActionListener true
@@ -60,21 +55,23 @@ class KeysBackupRestoreFromKeyFragment @Inject constructor()
             return@setOnEditorActionListener false
         }
 
-        mKeyInputLayout.error = viewModel.recoveryCodeErrorText.value
+        views.keyInputLayout.error = viewModel.recoveryCodeErrorText.value
         viewModel.recoveryCodeErrorText.observe(viewLifecycleOwner, Observer { newValue ->
-            mKeyInputLayout.error = newValue
+            views.keyInputLayout.error = newValue
         })
+
+        views.keysRestoreButton.setOnClickListener { onRestoreFromKey() }
+        views.keysBackupImport.setOnClickListener { onImport() }
+        views.keyTextEdit.doOnTextChanged { text, _, _, _ -> onRestoreKeyTextEditChange(text) }
     }
 
-    @OnTextChanged(R.id.keys_restore_key_enter_edittext)
-    fun onRestoreKeyTextEditChange(s: Editable?) {
+    private fun onRestoreKeyTextEditChange(s: CharSequence?) {
         s?.toString()?.let {
             viewModel.updateCode(it)
         }
     }
 
-    @OnClick(R.id.keys_restore_button)
-    fun onRestoreFromKey() {
+    private fun onRestoreFromKey() {
         val value = viewModel.recoveryCode.value
         if (value.isNullOrBlank()) {
             viewModel.recoveryCodeErrorText.value = context?.getString(R.string.keys_backup_recovery_code_empty_error_message)
@@ -83,8 +80,7 @@ class KeysBackupRestoreFromKeyFragment @Inject constructor()
         }
     }
 
-    @OnClick(R.id.keys_backup_import)
-    fun onImport() {
+    private fun onImport() {
         startImportTextFromFileIntent(requireContext(), textFileStartForActivityResult)
     }
 
@@ -98,8 +94,8 @@ class KeysBackupRestoreFromKeyFragment @Inject constructor()
                         ?.bufferedReader()
                         ?.use { it.readText() }
                         ?.let {
-                            mKeyTextEdit.setText(it)
-                            mKeyTextEdit.setSelection(it.length)
+                            views.keyTextEdit.setText(it)
+                            views.keyTextEdit.setSelection(it.length)
                         }
             }
         }

vector/src/main/java/im/vector/app/features/crypto/keysbackup/restore/KeysBackupRestoreFromPassphraseFragment.kt

@@ -16,46 +16,32 @@
 package im.vector.app.features.crypto.keysbackup.restore
 
 import android.os.Bundle
-import android.text.Editable
 import android.text.SpannableString
 import android.text.style.ClickableSpan
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
-import android.widget.EditText
-import android.widget.ImageView
-import android.widget.TextView
 import androidx.core.text.set
+import androidx.core.widget.doOnTextChanged
 import androidx.lifecycle.Observer
-import butterknife.BindView
-import butterknife.OnClick
-import butterknife.OnTextChanged
-import com.google.android.material.textfield.TextInputLayout
 import im.vector.app.R
 import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentKeysBackupRestoreFromPassphraseBinding
+
 import javax.inject.Inject
 
-class KeysBackupRestoreFromPassphraseFragment @Inject constructor() : VectorBaseFragment() {
+class KeysBackupRestoreFromPassphraseFragment @Inject constructor() : VectorBaseFragment<FragmentKeysBackupRestoreFromPassphraseBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_keys_backup_restore_from_passphrase
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentKeysBackupRestoreFromPassphraseBinding {
+        return FragmentKeysBackupRestoreFromPassphraseBinding.inflate(inflater, container, false)
+    }
 
     private lateinit var viewModel: KeysBackupRestoreFromPassphraseViewModel
     private lateinit var sharedViewModel: KeysBackupRestoreSharedViewModel
 
-    @BindView(R.id.keys_backup_passphrase_enter_til)
-    lateinit var mPassphraseInputLayout: TextInputLayout
-
-    @BindView(R.id.keys_backup_passphrase_enter_edittext)
-    lateinit var mPassphraseTextEdit: EditText
-
-    @BindView(R.id.keys_backup_view_show_password)
-    lateinit var mPassphraseReveal: ImageView
-
-    @BindView(R.id.keys_backup_passphrase_help_with_link)
-    lateinit var helperTextWithLink: TextView
-
-    @OnClick(R.id.keys_backup_view_show_password)
-    fun toggleVisibilityMode() {
+    private fun toggleVisibilityMode() {
         viewModel.showPasswordMode.value = !(viewModel.showPasswordMode.value ?: false)
     }
 
@@ -66,24 +52,29 @@ class KeysBackupRestoreFromPassphraseFragment @Inject constructor() : VectorBase
         sharedViewModel = activityViewModelProvider.get(KeysBackupRestoreSharedViewModel::class.java)
 
         viewModel.passphraseErrorText.observe(viewLifecycleOwner, Observer { newValue ->
-            mPassphraseInputLayout.error = newValue
+            views.keysBackupPassphraseEnterTil.error = newValue
         })
 
-        helperTextWithLink.text = spannableStringForHelperText()
+        views.helperTextWithLink.text = spannableStringForHelperText()
 
         viewModel.showPasswordMode.observe(viewLifecycleOwner, Observer {
             val shouldBeVisible = it ?: false
-            mPassphraseTextEdit.showPassword(shouldBeVisible)
-            mPassphraseReveal.setImageResource(if (shouldBeVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+            views.keysBackupPassphraseEnterEdittext.showPassword(shouldBeVisible)
+            views.keysBackupViewShowPassword.setImageResource(if (shouldBeVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
         })
 
-        mPassphraseTextEdit.setOnEditorActionListener { _, actionId, _ ->
+        views.keysBackupPassphraseEnterEdittext.setOnEditorActionListener { _, actionId, _ ->
             if (actionId == EditorInfo.IME_ACTION_DONE) {
                 onRestoreBackup()
                 return@setOnEditorActionListener true
             }
             return@setOnEditorActionListener false
         }
+
+        views.keysBackupViewShowPassword.setOnClickListener { toggleVisibilityMode() }
+        views.helperTextWithLink.setOnClickListener { onUseRecoveryKey() }
+        views.keysBackupRestoreWithPassphraseSubmit.setOnClickListener { onRestoreBackup() }
+        views.keysBackupPassphraseEnterEdittext.doOnTextChanged { text, _, _, _ -> onPassphraseTextEditChange(text) }
     }
 
     private fun spannableStringForHelperText(): SpannableString {
@@ -102,18 +93,15 @@ class KeysBackupRestoreFromPassphraseFragment @Inject constructor() : VectorBase
         return spanString
     }
 
-    @OnTextChanged(R.id.keys_backup_passphrase_enter_edittext)
-    fun onPassphraseTextEditChange(s: Editable?) {
+    private fun onPassphraseTextEditChange(s: CharSequence?) {
         s?.toString()?.let { viewModel.updatePassphrase(it) }
     }
 
-    @OnClick(R.id.keys_backup_passphrase_help_with_link)
-    fun onUseRecoveryKey() {
+    private fun onUseRecoveryKey() {
         sharedViewModel.moveToRecoverWithKey()
     }
 
-    @OnClick(R.id.keys_backup_restore_with_passphrase_submit)
-    fun onRestoreBackup() {
+    private fun onRestoreBackup() {
         val value = viewModel.passphrase.value
         if (value.isNullOrBlank()) {
             viewModel.passphraseErrorText.value = getString(R.string.passphrase_empty_error_message)

vector/src/main/java/im/vector/app/features/crypto/keysbackup/restore/KeysBackupRestoreSuccessFragment.kt

@@ -16,25 +16,22 @@
 package im.vector.app.features.crypto.keysbackup.restore
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
-import android.widget.TextView
+import android.view.ViewGroup
 import androidx.core.view.isVisible
-import butterknife.BindView
-import butterknife.OnClick
 import im.vector.app.R
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.LiveEvent
+import im.vector.app.databinding.FragmentKeysBackupRestoreSuccessBinding
+
 import javax.inject.Inject
 
-class KeysBackupRestoreSuccessFragment @Inject constructor() : VectorBaseFragment() {
+class KeysBackupRestoreSuccessFragment @Inject constructor() : VectorBaseFragment<FragmentKeysBackupRestoreSuccessBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_keys_backup_restore_success
-
-    @BindView(R.id.keys_backup_restore_success)
-    lateinit var mSuccessText: TextView
-
-    @BindView(R.id.keys_backup_restore_success_info)
-    lateinit var mSuccessDetailsText: TextView
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentKeysBackupRestoreSuccessBinding {
+        return FragmentKeysBackupRestoreSuccessBinding.inflate(inflater, container, false)
+    }
 
     private lateinit var sharedViewModel: KeysBackupRestoreSharedViewModel
 
@@ -48,18 +45,18 @@ class KeysBackupRestoreSuccessFragment @Inject constructor() : VectorBaseFragmen
                         it.totalNumberOfKeys, it.totalNumberOfKeys)
                 val part2 = resources.getQuantityString(R.plurals.keys_backup_restore_success_description_part2,
                         it.successfullyNumberOfImportedKeys, it.successfullyNumberOfImportedKeys)
-                mSuccessDetailsText.text = String.format("%s\n%s", part1, part2)
+                views.successDetailsText.text = String.format("%s\n%s", part1, part2)
             }
             // We don't put emoji in string xml as it will crash on old devices
-            mSuccessText.text = context?.getString(R.string.keys_backup_restore_success_title, "🎉")
+            views.successText.text = context?.getString(R.string.keys_backup_restore_success_title, "🎉")
         } else {
-            mSuccessText.text = context?.getString(R.string.keys_backup_restore_success_title_already_up_to_date)
-            mSuccessDetailsText.isVisible = false
+            views.successText.text = context?.getString(R.string.keys_backup_restore_success_title_already_up_to_date)
+            views.successDetailsText.isVisible = false
         }
+        views.keysBackupSetupDoneButton.setOnClickListener { onDone() }
     }
 
-    @OnClick(R.id.keys_backup_setup_done_button)
-    fun onDone() {
+    private fun onDone() {
         sharedViewModel.importRoomKeysFinishWithResult.value = LiveEvent(sharedViewModel.importKeyResult!!)
     }
 }

vector/src/main/java/im/vector/app/features/crypto/keysbackup/settings/KeysBackupSettingsFragment.kt

@@ -16,7 +16,9 @@
 package im.vector.app.features.crypto.keysbackup.settings
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
 import com.airbnb.mvrx.activityViewModel
 import com.airbnb.mvrx.withState
@@ -24,28 +26,31 @@ import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentKeysBackupSettingsBinding
 import im.vector.app.features.crypto.keysbackup.restore.KeysBackupRestoreActivity
 import im.vector.app.features.crypto.keysbackup.setup.KeysBackupSetupActivity
-import kotlinx.android.synthetic.main.fragment_keys_backup_settings.*
+
 import javax.inject.Inject
 
 class KeysBackupSettingsFragment @Inject constructor(private val keysBackupSettingsRecyclerViewController: KeysBackupSettingsRecyclerViewController)
-    : VectorBaseFragment(),
+    : VectorBaseFragment<FragmentKeysBackupSettingsBinding>(),
         KeysBackupSettingsRecyclerViewController.Listener {
 
-    override fun getLayoutResId() = R.layout.fragment_keys_backup_settings
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentKeysBackupSettingsBinding {
+        return FragmentKeysBackupSettingsBinding.inflate(inflater, container, false)
+    }
 
     private val viewModel: KeysBackupSettingsViewModel by activityViewModel()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        keysBackupSettingsRecyclerView.configureWith(keysBackupSettingsRecyclerViewController)
+        views.keysBackupSettingsRecyclerView.configureWith(keysBackupSettingsRecyclerViewController)
         keysBackupSettingsRecyclerViewController.listener = this
     }
 
     override fun onDestroyView() {
         keysBackupSettingsRecyclerViewController.listener = null
-        keysBackupSettingsRecyclerView.cleanup()
+        views.keysBackupSettingsRecyclerView.cleanup()
         super.onDestroyView()
     }
 

vector/src/main/java/im/vector/app/features/crypto/keysbackup/setup/KeysBackupSetupStep1Fragment.kt

@@ -17,29 +17,24 @@
 package im.vector.app.features.crypto.keysbackup.setup
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
-import android.widget.Button
-import android.widget.TextView
+import android.view.ViewGroup
 import androidx.lifecycle.Observer
-import butterknife.BindView
-import butterknife.OnClick
-import im.vector.app.R
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.LiveEvent
+import im.vector.app.databinding.FragmentKeysBackupSetupStep1Binding
+
 import javax.inject.Inject
 
-class KeysBackupSetupStep1Fragment @Inject constructor() : VectorBaseFragment() {
+class KeysBackupSetupStep1Fragment @Inject constructor() : VectorBaseFragment<FragmentKeysBackupSetupStep1Binding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_keys_backup_setup_step1
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentKeysBackupSetupStep1Binding {
+        return FragmentKeysBackupSetupStep1Binding.inflate(inflater, container, false)
+    }
 
     private lateinit var viewModel: KeysBackupSetupSharedViewModel
 
-    @BindView(R.id.keys_backup_setup_step1_advanced)
-    lateinit var advancedOptionText: TextView
-
-    @BindView(R.id.keys_backup_setup_step1_manualExport)
-    lateinit var manualExportButton: Button
-
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
@@ -48,18 +43,19 @@ class KeysBackupSetupStep1Fragment @Inject constructor() : VectorBaseFragment()
         viewModel.showManualExport.observe(viewLifecycleOwner, Observer {
             val showOption = it ?: false
             // Can't use isVisible because the kotlin compiler will crash with  Back-end (JVM) Internal error: wrong code generated
-            advancedOptionText.visibility = if (showOption) View.VISIBLE else View.GONE
-            manualExportButton.visibility = if (showOption) View.VISIBLE else View.GONE
+            views.keysBackupSetupStep1AdvancedOptionText.visibility = if (showOption) View.VISIBLE else View.GONE
+            views.keysBackupSetupStep1ManualExportButton.visibility = if (showOption) View.VISIBLE else View.GONE
         })
+
+        views.keysBackupSetupStep1Button.setOnClickListener { onButtonClick() }
+        views.keysBackupSetupStep1ManualExportButton.setOnClickListener { onManualExportClick() }
     }
 
-    @OnClick(R.id.keys_backup_setup_step1_button)
-    fun onButtonClick() {
+    private fun onButtonClick() {
         viewModel.navigateEvent.value = LiveEvent(KeysBackupSetupSharedViewModel.NAVIGATE_TO_STEP_2)
     }
 
-    @OnClick(R.id.keys_backup_setup_step1_manualExport)
-    fun onManualExportClick() {
+    private fun onManualExportClick() {
         viewModel.navigateEvent.value = LiveEvent(KeysBackupSetupSharedViewModel.NAVIGATE_MANUAL_EXPORT)
     }
 }

vector/src/main/java/im/vector/app/features/crypto/keysbackup/setup/KeysBackupSetupStep2Fragment.kt

@@ -16,64 +16,40 @@
 package im.vector.app.features.crypto.keysbackup.setup
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
-import android.widget.EditText
-import android.widget.ImageView
+import androidx.core.widget.doOnTextChanged
 import androidx.lifecycle.Observer
 import androidx.lifecycle.viewModelScope
 import androidx.transition.TransitionManager
-import butterknife.BindView
-import butterknife.OnClick
-import butterknife.OnTextChanged
-import com.google.android.material.textfield.TextInputLayout
 import com.nulabinc.zxcvbn.Zxcvbn
 import im.vector.app.R
 import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.VectorBaseFragment
-import im.vector.app.core.ui.views.PasswordStrengthBar
+import im.vector.app.databinding.FragmentKeysBackupSetupStep2Binding
 import im.vector.app.features.settings.VectorLocale
+
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import javax.inject.Inject
 
-class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment() {
+class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment<FragmentKeysBackupSetupStep2Binding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_keys_backup_setup_step2
-
-    @BindView(R.id.keys_backup_root)
-    lateinit var rootGroup: ViewGroup
-
-    @BindView(R.id.keys_backup_passphrase_enter_edittext)
-    lateinit var mPassphraseTextEdit: EditText
-
-    @BindView(R.id.keys_backup_passphrase_enter_til)
-    lateinit var mPassphraseInputLayout: TextInputLayout
-
-    @BindView(R.id.keys_backup_view_show_password)
-    lateinit var mPassphraseReveal: ImageView
-
-    @BindView(R.id.keys_backup_passphrase_confirm_edittext)
-    lateinit var mPassphraseConfirmTextEdit: EditText
-
-    @BindView(R.id.keys_backup_passphrase_confirm_til)
-    lateinit var mPassphraseConfirmInputLayout: TextInputLayout
-
-    @BindView(R.id.keys_backup_passphrase_security_progress)
-    lateinit var mPassphraseProgressLevel: PasswordStrengthBar
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentKeysBackupSetupStep2Binding {
+        return FragmentKeysBackupSetupStep2Binding.inflate(inflater, container, false)
+    }
 
     private val zxcvbn = Zxcvbn()
 
-    @OnTextChanged(R.id.keys_backup_passphrase_enter_edittext)
-    fun onPassphraseChanged() {
-        viewModel.passphrase.value = mPassphraseTextEdit.text.toString()
+    private fun onPassphraseChanged() {
+        viewModel.passphrase.value = views.keysBackupSetupStep2PassphraseEnterEdittext.text.toString()
         viewModel.confirmPassphraseError.value = null
     }
 
-    @OnTextChanged(R.id.keys_backup_passphrase_confirm_edittext)
-    fun onConfirmPassphraseChanged() {
-        viewModel.confirmPassphrase.value = mPassphraseConfirmTextEdit.text.toString()
+    private fun onConfirmPassphraseChanged() {
+        viewModel.confirmPassphrase.value = views.keysBackupSetupStep2PassphraseConfirmEditText.text.toString()
     }
 
     private lateinit var viewModel: KeysBackupSetupSharedViewModel
@@ -85,6 +61,7 @@ class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment()
 
         viewModel.shouldPromptOnBack = true
         bindViewToViewModel()
+        setupViews()
     }
 
     /* ==========================================================================================
@@ -94,24 +71,24 @@ class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment()
     private fun bindViewToViewModel() {
         viewModel.passwordStrength.observe(viewLifecycleOwner, Observer { strength ->
             if (strength == null) {
-                mPassphraseProgressLevel.strength = 0
-                mPassphraseInputLayout.error = null
+                views.keysBackupSetupStep2PassphraseStrengthLevel.strength = 0
+                views.keysBackupSetupStep2PassphraseEnterTil.error = null
             } else {
                 val score = strength.score
-                mPassphraseProgressLevel.strength = score
+                views.keysBackupSetupStep2PassphraseStrengthLevel.strength = score
 
                 if (score in 1..3) {
                     val warning = strength.feedback?.getWarning(VectorLocale.applicationLocale)
                     if (warning != null) {
-                        mPassphraseInputLayout.error = warning
+                        views.keysBackupSetupStep2PassphraseEnterTil.error = warning
                     }
 
                     val suggestions = strength.feedback?.getSuggestions(VectorLocale.applicationLocale)
                     if (suggestions != null) {
-                        mPassphraseInputLayout.error = suggestions.firstOrNull()
+                        views.keysBackupSetupStep2PassphraseEnterTil.error = suggestions.firstOrNull()
                     }
                 } else {
-                    mPassphraseInputLayout.error = null
+                    views.keysBackupSetupStep2PassphraseEnterTil.error = null
                 }
             }
         })
@@ -129,28 +106,28 @@ class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment()
             }
         })
 
-        mPassphraseTextEdit.setText(viewModel.passphrase.value)
+        views.keysBackupSetupStep2PassphraseEnterEdittext.setText(viewModel.passphrase.value)
 
         viewModel.passphraseError.observe(viewLifecycleOwner, Observer {
-            TransitionManager.beginDelayedTransition(rootGroup)
-            mPassphraseInputLayout.error = it
+            TransitionManager.beginDelayedTransition(views.keysBackupRoot)
+            views.keysBackupSetupStep2PassphraseEnterTil.error = it
         })
 
-        mPassphraseConfirmTextEdit.setText(viewModel.confirmPassphrase.value)
+        views.keysBackupSetupStep2PassphraseConfirmEditText.setText(viewModel.confirmPassphrase.value)
 
         viewModel.showPasswordMode.observe(viewLifecycleOwner, Observer {
             val shouldBeVisible = it ?: false
-            mPassphraseTextEdit.showPassword(shouldBeVisible)
-            mPassphraseConfirmTextEdit.showPassword(shouldBeVisible)
-            mPassphraseReveal.setImageResource(if (shouldBeVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+            views.keysBackupSetupStep2PassphraseEnterEdittext.showPassword(shouldBeVisible)
+            views.keysBackupSetupStep2PassphraseConfirmEditText.showPassword(shouldBeVisible)
+            views.keysBackupSetupStep2ShowPassword.setImageResource(if (shouldBeVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
         })
 
         viewModel.confirmPassphraseError.observe(viewLifecycleOwner, Observer {
-            TransitionManager.beginDelayedTransition(rootGroup)
-            mPassphraseConfirmInputLayout.error = it
+            TransitionManager.beginDelayedTransition(views.keysBackupRoot)
+            views.keysBackupSetupStep2PassphraseConfirmTil.error = it
         })
 
-        mPassphraseConfirmTextEdit.setOnEditorActionListener { _, actionId, _ ->
+        views.keysBackupSetupStep2PassphraseConfirmEditText.setOnEditorActionListener { _, actionId, _ ->
             if (actionId == EditorInfo.IME_ACTION_DONE) {
                 doNext()
                 return@setOnEditorActionListener true
@@ -159,13 +136,20 @@ class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment()
         }
     }
 
-    @OnClick(R.id.keys_backup_view_show_password)
-    fun toggleVisibilityMode() {
+    private fun setupViews() {
+        views.keysBackupSetupStep2ShowPassword.setOnClickListener { toggleVisibilityMode() }
+        views.keysBackupSetupStep2Button.setOnClickListener { doNext() }
+        views.keysBackupSetupStep2SkipButton.setOnClickListener { skipPassphrase() }
+
+        views.keysBackupSetupStep2PassphraseEnterEdittext.doOnTextChanged { _, _, _, _ ->  onPassphraseChanged() }
+        views.keysBackupSetupStep2PassphraseConfirmEditText.doOnTextChanged { _, _, _, _ ->  onConfirmPassphraseChanged() }
+    }
+
+    private fun toggleVisibilityMode() {
         viewModel.showPasswordMode.value = !(viewModel.showPasswordMode.value ?: false)
     }
 
-    @OnClick(R.id.keys_backup_setup_step2_button)
-    fun doNext() {
+    private fun doNext() {
         when {
             viewModel.passphrase.value.isNullOrEmpty()                      -> {
                 viewModel.passphraseError.value = context?.getString(R.string.passphrase_empty_error_message)
@@ -184,8 +168,7 @@ class KeysBackupSetupStep2Fragment @Inject constructor() : VectorBaseFragment()
         }
     }
 
-    @OnClick(R.id.keys_backup_setup_step2_skip_button)
-    fun skipPassphrase() {
+    private fun skipPassphrase() {
         when {
             viewModel.passphrase.value.isNullOrEmpty() -> {
                 // Generate a recovery key for the user

vector/src/main/java/im/vector/app/features/crypto/keysbackup/setup/KeysBackupSetupStep3Fragment.kt

@@ -18,16 +18,15 @@ package im.vector.app.features.crypto.keysbackup.setup
 import android.app.Activity
 import android.net.Uri
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
-import android.widget.Button
+import android.view.ViewGroup
 import android.widget.TextView
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
 import androidx.lifecycle.Observer
 import arrow.core.Try
-import butterknife.BindView
-import butterknife.OnClick
 import com.google.android.material.bottomsheet.BottomSheetDialog
 import im.vector.app.R
 import im.vector.app.core.extensions.registerStartForActivityResult
@@ -36,6 +35,8 @@ import im.vector.app.core.utils.LiveEvent
 import im.vector.app.core.utils.copyToClipboard
 import im.vector.app.core.utils.selectTxtFileToWrite
 import im.vector.app.core.utils.startSharePlainTextIntent
+import im.vector.app.databinding.FragmentKeysBackupSetupStep3Binding
+
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
@@ -46,18 +47,11 @@ import java.util.Date
 import java.util.Locale
 import javax.inject.Inject
 
-class KeysBackupSetupStep3Fragment @Inject constructor() : VectorBaseFragment() {
+class KeysBackupSetupStep3Fragment @Inject constructor() : VectorBaseFragment<FragmentKeysBackupSetupStep3Binding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_keys_backup_setup_step3
-
-    @BindView(R.id.keys_backup_setup_step3_button)
-    lateinit var mFinishButton: Button
-
-    @BindView(R.id.keys_backup_recovery_key_text)
-    lateinit var mRecoveryKeyTextView: TextView
-
-    @BindView(R.id.keys_backup_setup_step3_line2_text)
-    lateinit var mRecoveryKeyLabel2TextView: TextView
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentKeysBackupSetupStep3Binding {
+        return FragmentKeysBackupSetupStep3Binding.inflate(inflater, container, false)
+    }
 
     private lateinit var viewModel: KeysBackupSetupSharedViewModel
 
@@ -70,10 +64,10 @@ class KeysBackupSetupStep3Fragment @Inject constructor() : VectorBaseFragment()
         viewModel.passphrase.observe(viewLifecycleOwner, Observer {
             if (it.isNullOrBlank()) {
                 // Recovery was generated, so show key and options to save
-                mRecoveryKeyLabel2TextView.text = getString(R.string.keys_backup_setup_step3_text_line2_no_passphrase)
-                mFinishButton.text = getString(R.string.keys_backup_setup_step3_button_title_no_passphrase)
+                views.keysBackupSetupStep3Label2.text = getString(R.string.keys_backup_setup_step3_text_line2_no_passphrase)
+                views.keysBackupSetupStep3FinishButton.text = getString(R.string.keys_backup_setup_step3_button_title_no_passphrase)
 
-                mRecoveryKeyTextView.text = viewModel.recoveryKey.value!!
+                views.keysBackupSetupStep3RecoveryKeyText.text = viewModel.recoveryKey.value!!
                         .replace(" ", "")
                         .chunked(16)
                         .joinToString("\n") {
@@ -81,17 +75,24 @@ class KeysBackupSetupStep3Fragment @Inject constructor() : VectorBaseFragment()
                                     .chunked(4)
                                     .joinToString(" ")
                         }
-                mRecoveryKeyTextView.isVisible = true
+                views.keysBackupSetupStep3RecoveryKeyText.isVisible = true
             } else {
-                mRecoveryKeyLabel2TextView.text = getString(R.string.keys_backup_setup_step3_text_line2)
-                mFinishButton.text = getString(R.string.keys_backup_setup_step3_button_title)
-                mRecoveryKeyTextView.isVisible = false
+                views.keysBackupSetupStep3Label2.text = getString(R.string.keys_backup_setup_step3_text_line2)
+                views.keysBackupSetupStep3FinishButton.text = getString(R.string.keys_backup_setup_step3_button_title)
+                views.keysBackupSetupStep3RecoveryKeyText.isVisible = false
             }
         })
+
+        setupViews()
     }
 
-    @OnClick(R.id.keys_backup_setup_step3_button)
-    fun onFinishButtonClicked() {
+    private fun setupViews() {
+        views.keysBackupSetupStep3FinishButton.setOnClickListener { onFinishButtonClicked() }
+        views.keysBackupSetupStep3CopyButton.setOnClickListener { onCopyButtonClicked() }
+        views.keysBackupSetupStep3RecoveryKeyText.setOnClickListener { onRecoveryKeyClicked() }
+    }
+
+    private fun onFinishButtonClicked() {
         if (viewModel.megolmBackupCreationInfo == null) {
             // nothing
         } else {
@@ -103,8 +104,7 @@ class KeysBackupSetupStep3Fragment @Inject constructor() : VectorBaseFragment()
         }
     }
 
-    @OnClick(R.id.keys_backup_setup_step3_copy_button)
-    fun onCopyButtonClicked() {
+    private fun onCopyButtonClicked() {
         val dialog = BottomSheetDialog(requireActivity())
         dialog.setContentView(R.layout.bottom_sheet_save_recovery_key)
         dialog.setCanceledOnTouchOutside(true)
@@ -155,8 +155,7 @@ class KeysBackupSetupStep3Fragment @Inject constructor() : VectorBaseFragment()
         dialog.show()
     }
 
-    @OnClick(R.id.keys_backup_recovery_key_text)
-    fun onRecoveryKeyClicked() {
+    private fun onRecoveryKeyClicked() {
         viewModel.recoveryKey.value?.let {
             viewModel.copyHasBeenMade = true
 

vector/src/main/java/im/vector/app/features/crypto/quads/SharedSecureStorageActivity.kt

@@ -35,8 +35,7 @@ import im.vector.app.core.extensions.commitTransaction
 import im.vector.app.core.platform.SimpleFragmentActivity
 import im.vector.app.core.platform.VectorBaseBottomSheetDialogFragment
 import im.vector.app.features.crypto.recover.SetupMode
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.activity.*
+import kotlinx.parcelize.Parcelize
 import javax.inject.Inject
 import kotlin.reflect.KClass
 
@@ -65,7 +64,7 @@ class SharedSecureStorageActivity :
         super.onCreate(savedInstanceState)
         supportFragmentManager.addFragmentOnAttachListener(this)
 
-        toolbar.visibility = View.GONE
+        views.toolbar.visibility = View.GONE
 
         viewModel.observeViewEvents { observeViewEvents(it) }
 
@@ -132,7 +131,7 @@ class SharedSecureStorageActivity :
     }
 
     override fun onAttachFragment(fragmentManager: FragmentManager, fragment: Fragment) {
-        if (fragment is VectorBaseBottomSheetDialogFragment) {
+        if (fragment is VectorBaseBottomSheetDialogFragment<*>) {
             fragment.resultListener = this
         }
     }

vector/src/main/java/im/vector/app/features/crypto/quads/SharedSecuredStorageKeyFragment.kt

@@ -18,7 +18,9 @@ package im.vector.app.features.crypto.quads
 
 import android.app.Activity
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import com.airbnb.mvrx.activityViewModel
 import com.jakewharton.rxbinding3.widget.editorActionEvents
@@ -27,23 +29,26 @@ import im.vector.app.R
 import im.vector.app.core.extensions.registerStartForActivityResult
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.startImportTextFromFileIntent
+import im.vector.app.databinding.FragmentSsssAccessFromKeyBinding
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.synthetic.main.fragment_ssss_access_from_key.*
+
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
-class SharedSecuredStorageKeyFragment @Inject constructor() : VectorBaseFragment() {
+class SharedSecuredStorageKeyFragment @Inject constructor() : VectorBaseFragment<FragmentSsssAccessFromKeyBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_ssss_access_from_key
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentSsssAccessFromKeyBinding {
+        return FragmentSsssAccessFromKeyBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: SharedSecureStorageViewModel by activityViewModel()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
-        ssss_restore_with_key_text.text = getString(R.string.enter_secret_storage_input_key)
+        views.ssssRestoreWithKeyText.text = getString(R.string.enter_secret_storage_input_key)
 
-        ssss_key_enter_edittext.editorActionEvents()
+        views.ssssKeyEnterEdittext.editorActionEvents()
                 .throttleFirst(300, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe {
@@ -53,35 +58,35 @@ class SharedSecuredStorageKeyFragment @Inject constructor() : VectorBaseFragment
                 }
                 .disposeOnDestroyView()
 
-        ssss_key_enter_edittext.textChanges()
+        views.ssssKeyEnterEdittext.textChanges()
                 .skipInitialValue()
                 .subscribe {
-                    ssss_key_enter_til.error = null
-                    ssss_key_submit.isEnabled = it.isNotBlank()
+                    views.ssssKeyEnterTil.error = null
+                    views.ssssKeySubmit.isEnabled = it.isNotBlank()
                 }
                 .disposeOnDestroyView()
 
-        ssss_key_use_file.debouncedClicks { startImportTextFromFileIntent(requireContext(), importFileStartForActivityResult) }
+        views.ssssKeyUseFile.debouncedClicks { startImportTextFromFileIntent(requireContext(), importFileStartForActivityResult) }
 
-        ssss_key_reset.clickableView.debouncedClicks {
+        views.ssssKeyReset.views.itemVerificationClickableZone.debouncedClicks {
             sharedViewModel.handle(SharedSecureStorageAction.ForgotResetAll)
         }
 
         sharedViewModel.observeViewEvents {
             when (it) {
                 is SharedSecureStorageViewEvent.KeyInlineError -> {
-                    ssss_key_enter_til.error = it.message
+                    views.ssssKeyEnterTil.error = it.message
                 }
             }
         }
 
-        ssss_key_submit.debouncedClicks { submit() }
+        views.ssssKeySubmit.debouncedClicks { submit() }
     }
 
     fun submit() {
-        val text = ssss_key_enter_edittext.text.toString()
+        val text = views.ssssKeyEnterEdittext.text.toString()
         if (text.isBlank()) return // Should not reach this point as button disabled
-        ssss_key_submit.isEnabled = false
+        views.ssssKeySubmit.isEnabled = false
         sharedViewModel.handle(SharedSecureStorageAction.SubmitKey(text))
     }
 
@@ -93,7 +98,7 @@ class SharedSecuredStorageKeyFragment @Inject constructor() : VectorBaseFragment
                             ?.bufferedReader()
                             ?.use { it.readText() }
                             ?.let {
-                                ssss_key_enter_edittext.setText(it)
+                                views.ssssKeyEnterEdittext.setText(it)
                             }
                 }
             }

vector/src/main/java/im/vector/app/features/crypto/quads/SharedSecuredStoragePassphraseFragment.kt

@@ -17,7 +17,9 @@
 package im.vector.app.features.crypto.quads
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import androidx.core.text.toSpannable
 import com.airbnb.mvrx.activityViewModel
@@ -29,16 +31,19 @@ import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.resources.ColorProvider
 import im.vector.app.core.utils.colorizeMatchingText
+import im.vector.app.databinding.FragmentSsssAccessFromPassphraseBinding
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.synthetic.main.fragment_ssss_access_from_passphrase.*
+
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
 class SharedSecuredStoragePassphraseFragment @Inject constructor(
         private val colorProvider: ColorProvider
-) : VectorBaseFragment() {
+) : VectorBaseFragment<FragmentSsssAccessFromPassphraseBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_ssss_access_from_passphrase
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentSsssAccessFromPassphraseBinding {
+        return FragmentSsssAccessFromPassphraseBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: SharedSecureStorageViewModel by activityViewModel()
 
@@ -48,7 +53,7 @@ class SharedSecuredStoragePassphraseFragment @Inject constructor(
         // If has passphrase
         val pass = getString(R.string.recovery_passphrase)
         val key = getString(R.string.recovery_key)
-        ssss_restore_with_passphrase_warning_text.text = getString(
+        views.ssssRestoreWithPassphraseWarningText.text = getString(
                 R.string.enter_secret_storage_passphrase_or_key,
                 pass,
                 key
@@ -57,7 +62,7 @@ class SharedSecuredStoragePassphraseFragment @Inject constructor(
                 .colorizeMatchingText(pass, colorProvider.getColorFromAttribute(android.R.attr.textColorLink))
                 .colorizeMatchingText(key, colorProvider.getColorFromAttribute(android.R.attr.textColorLink))
 
-        ssss_passphrase_enter_edittext.editorActionEvents()
+        views.ssssPassphraseEnterEdittext.editorActionEvents()
                 .throttleFirst(300, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe {
@@ -67,40 +72,40 @@ class SharedSecuredStoragePassphraseFragment @Inject constructor(
                 }
                 .disposeOnDestroyView()
 
-        ssss_passphrase_enter_edittext.textChanges()
+        views.ssssPassphraseEnterEdittext.textChanges()
                 .subscribe {
-                    ssss_passphrase_enter_til.error = null
-                    ssss_passphrase_submit.isEnabled = it.isNotBlank()
+                    views.ssssPassphraseEnterTil.error = null
+                    views.ssssPassphraseSubmit.isEnabled = it.isNotBlank()
                 }
                 .disposeOnDestroyView()
 
-        ssss_passphrase_reset.clickableView.debouncedClicks {
+        views.ssssPassphraseReset.views.itemVerificationClickableZone.debouncedClicks {
             sharedViewModel.handle(SharedSecureStorageAction.ForgotResetAll)
         }
 
         sharedViewModel.observeViewEvents {
             when (it) {
                 is SharedSecureStorageViewEvent.InlineError -> {
-                    ssss_passphrase_enter_til.error = it.message
+                    views.ssssPassphraseEnterTil.error = it.message
                 }
             }
         }
 
-        ssss_passphrase_submit.debouncedClicks { submit() }
-        ssss_passphrase_use_key.debouncedClicks { sharedViewModel.handle(SharedSecureStorageAction.UseKey) }
-        ssss_view_show_password.debouncedClicks { sharedViewModel.handle(SharedSecureStorageAction.TogglePasswordVisibility) }
+        views.ssssPassphraseSubmit.debouncedClicks { submit() }
+        views.ssssPassphraseUseKey.debouncedClicks { sharedViewModel.handle(SharedSecureStorageAction.UseKey) }
+        views.ssssViewShowPassword.debouncedClicks { sharedViewModel.handle(SharedSecureStorageAction.TogglePasswordVisibility) }
     }
 
     fun submit() {
-        val text = ssss_passphrase_enter_edittext.text.toString()
+        val text = views.ssssPassphraseEnterEdittext.text.toString()
         if (text.isBlank()) return // Should not reach this point as button disabled
-        ssss_passphrase_submit.isEnabled = false
+        views.ssssPassphraseSubmit.isEnabled = false
         sharedViewModel.handle(SharedSecureStorageAction.SubmitPassphrase(text))
     }
 
     override fun invalidate() = withState(sharedViewModel) { state ->
         val shouldBeVisible = state.passphraseVisible
-        ssss_passphrase_enter_edittext.showPassword(shouldBeVisible)
-        ssss_view_show_password.setImageResource(if (shouldBeVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+        views.ssssPassphraseEnterEdittext.showPassword(shouldBeVisible)
+        views.ssssViewShowPassword.setImageResource(if (shouldBeVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
     }
 }

vector/src/main/java/im/vector/app/features/crypto/quads/SharedSecuredStorageResetAllFragment.kt

@@ -17,41 +17,47 @@
 package im.vector.app.features.crypto.quads
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.activityViewModel
 import com.airbnb.mvrx.withState
 import im.vector.app.R
 import im.vector.app.core.extensions.setTextOrHide
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentSsssResetAllBinding
 import im.vector.app.features.roommemberprofile.devices.DeviceListBottomSheet
-import kotlinx.android.synthetic.main.fragment_ssss_reset_all.*
+
 import javax.inject.Inject
 
-class SharedSecuredStorageResetAllFragment @Inject constructor() : VectorBaseFragment() {
+class SharedSecuredStorageResetAllFragment @Inject constructor()
+    : VectorBaseFragment<FragmentSsssResetAllBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_ssss_reset_all
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentSsssResetAllBinding {
+        return FragmentSsssResetAllBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: SharedSecureStorageViewModel by activityViewModel()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        ssss_reset_button_reset.debouncedClicks {
+        views.ssssResetButtonReset.debouncedClicks {
             sharedViewModel.handle(SharedSecureStorageAction.DoResetAll)
         }
 
-        ssss_reset_button_cancel.debouncedClicks {
+        views.ssssResetButtonCancel.debouncedClicks {
             sharedViewModel.handle(SharedSecureStorageAction.Back)
         }
 
-        ssss_reset_other_devices.debouncedClicks {
+        views.ssssResetOtherDevices.debouncedClicks {
             withState(sharedViewModel) {
                 DeviceListBottomSheet.newInstance(it.userId, false).show(childFragmentManager, "DEV_LIST")
             }
         }
 
         sharedViewModel.subscribe(this) { state ->
-            ssss_reset_other_devices.setTextOrHide(
+            views.ssssResetOtherDevices.setTextOrHide(
                     state.activeDeviceCount
                             .takeIf { it > 0 }
                             ?.let { resources.getQuantityString(R.plurals.secure_backup_reset_devices_you_can_verify, it, it) }

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapAccountPasswordFragment.kt

@@ -17,7 +17,9 @@
 package im.vector.app.features.crypto.recover
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import androidx.core.text.toSpannable
 import com.airbnb.mvrx.parentFragmentViewModel
@@ -30,18 +32,19 @@ import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.resources.ColorProvider
 import im.vector.app.core.utils.colorizeMatchingText
+import im.vector.app.databinding.FragmentBootstrapEnterAccountPasswordBinding
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.synthetic.main.fragment_bootstrap_enter_account_password.*
-import kotlinx.android.synthetic.main.fragment_bootstrap_enter_passphrase.bootstrapDescriptionText
-import kotlinx.android.synthetic.main.fragment_bootstrap_enter_passphrase.ssss_view_show_password
+
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
 class BootstrapAccountPasswordFragment @Inject constructor(
         private val colorProvider: ColorProvider
-) : VectorBaseFragment() {
+) : VectorBaseFragment<FragmentBootstrapEnterAccountPasswordBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_enter_account_password
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapEnterAccountPasswordBinding {
+        return FragmentBootstrapEnterAccountPasswordBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
@@ -49,13 +52,13 @@ class BootstrapAccountPasswordFragment @Inject constructor(
         super.onViewCreated(view, savedInstanceState)
 
         val recPassPhrase = getString(R.string.account_password)
-        bootstrapDescriptionText.text = getString(R.string.enter_account_password, recPassPhrase)
+        views.bootstrapDescriptionText.text = getString(R.string.enter_account_password, recPassPhrase)
                 .toSpannable()
                 .colorizeMatchingText(recPassPhrase, colorProvider.getColorFromAttribute(android.R.attr.textColorLink))
 
-        bootstrapAccountPasswordEditText.hint = getString(R.string.account_password)
+        views.bootstrapAccountPasswordEditText.hint = getString(R.string.account_password)
 
-        bootstrapAccountPasswordEditText.editorActionEvents()
+        views.bootstrapAccountPasswordEditText.editorActionEvents()
                 .throttleFirst(300, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe {
@@ -65,21 +68,21 @@ class BootstrapAccountPasswordFragment @Inject constructor(
                 }
                 .disposeOnDestroyView()
 
-        bootstrapAccountPasswordEditText.textChanges()
+        views.bootstrapAccountPasswordEditText.textChanges()
                 .distinctUntilChanged()
                 .subscribe {
                     if (!it.isNullOrBlank()) {
-                        bootstrapAccountPasswordTil.error = null
+                        views.bootstrapAccountPasswordTil.error = null
                     }
                 }
                 .disposeOnDestroyView()
 
-        ssss_view_show_password.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
-        bootstrapPasswordButton.debouncedClicks { submit() }
+        views.ssssViewShowPassword.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
+        views.bootstrapPasswordButton.debouncedClicks { submit() }
 
         withState(sharedViewModel) { state ->
             (state.step as? BootstrapStep.AccountPassword)?.failure?.let {
-                bootstrapAccountPasswordTil.error = it
+                views.bootstrapAccountPasswordTil.error = it
             }
         }
     }
@@ -88,9 +91,9 @@ class BootstrapAccountPasswordFragment @Inject constructor(
         if (state.step !is BootstrapStep.AccountPassword) {
             return@withState
         }
-        val accountPassword = bootstrapAccountPasswordEditText.text?.toString()
+        val accountPassword = views.bootstrapAccountPasswordEditText.text?.toString()
         if (accountPassword.isNullOrBlank()) {
-            bootstrapAccountPasswordTil.error = getString(R.string.error_empty_field_your_password)
+            views.bootstrapAccountPasswordTil.error = getString(R.string.error_empty_field_your_password)
         } else {
             view?.hideKeyboard()
             sharedViewModel.handle(BootstrapActions.ReAuth(accountPassword))
@@ -100,8 +103,8 @@ class BootstrapAccountPasswordFragment @Inject constructor(
     override fun invalidate() = withState(sharedViewModel) { state ->
         if (state.step is BootstrapStep.AccountPassword) {
             val isPasswordVisible = state.step.isPasswordVisible
-            bootstrapAccountPasswordEditText.showPassword(isPasswordVisible, updateCursor = false)
-            ssss_view_show_password.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+            views.bootstrapAccountPasswordEditText.showPassword(isPasswordVisible, updateCursor = false)
+            views.ssssViewShowPassword.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
         }
     }
 }

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapBottomSheet.kt

@@ -36,12 +36,12 @@ import im.vector.app.core.di.ScreenComponent
 import im.vector.app.core.extensions.commitTransaction
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.platform.VectorBaseBottomSheetDialogFragment
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.bottom_sheet_bootstrap.*
+import im.vector.app.databinding.BottomSheetBootstrapBinding
+import kotlinx.parcelize.Parcelize
 import javax.inject.Inject
 import kotlin.reflect.KClass
 
-class BootstrapBottomSheet : VectorBaseBottomSheetDialogFragment() {
+class BootstrapBottomSheet : VectorBaseBottomSheetDialogFragment<BottomSheetBootstrapBinding>() {
 
     @Parcelize
     data class Args(
@@ -59,7 +59,9 @@ class BootstrapBottomSheet : VectorBaseBottomSheetDialogFragment() {
         injector.inject(this)
     }
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_bootstrap
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetBootstrapBinding {
+        return BottomSheetBootstrapBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -120,60 +122,60 @@ class BootstrapBottomSheet : VectorBaseBottomSheetDialogFragment() {
     override fun invalidate() = withState(viewModel) { state ->
         when (state.step) {
             is BootstrapStep.CheckingMigration           -> {
-                bootstrapIcon.isVisible = false
-                bootstrapTitleText.text = getString(R.string.bottom_sheet_setup_secure_backup_title)
+                views.bootstrapIcon.isVisible = false
+                views.bootstrapTitleText.text = getString(R.string.bottom_sheet_setup_secure_backup_title)
                 showFragment(BootstrapWaitingFragment::class, Bundle())
             }
             is BootstrapStep.FirstForm                   -> {
-                bootstrapIcon.isVisible = false
-                bootstrapTitleText.text = getString(R.string.bottom_sheet_setup_secure_backup_title)
+                views.bootstrapIcon.isVisible = false
+                views.bootstrapTitleText.text = getString(R.string.bottom_sheet_setup_secure_backup_title)
                 showFragment(BootstrapSetupRecoveryKeyFragment::class, Bundle())
             }
             is BootstrapStep.SetupPassphrase             -> {
-                bootstrapIcon.isVisible = true
-                bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_phrase_24dp))
-                bootstrapTitleText.text = getString(R.string.set_a_security_phrase_title)
+                views.bootstrapIcon.isVisible = true
+                views.bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_phrase_24dp))
+                views.bootstrapTitleText.text = getString(R.string.set_a_security_phrase_title)
                 showFragment(BootstrapEnterPassphraseFragment::class, Bundle())
             }
             is BootstrapStep.ConfirmPassphrase           -> {
-                bootstrapIcon.isVisible = true
-                bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_phrase_24dp))
-                bootstrapTitleText.text = getString(R.string.set_a_security_phrase_title)
+                views.bootstrapIcon.isVisible = true
+                views.bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_phrase_24dp))
+                views.bootstrapTitleText.text = getString(R.string.set_a_security_phrase_title)
                 showFragment(BootstrapConfirmPassphraseFragment::class, Bundle())
             }
             is BootstrapStep.AccountPassword             -> {
-                bootstrapIcon.isVisible = true
-                bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_user))
-                bootstrapTitleText.text = getString(R.string.account_password)
+                views.bootstrapIcon.isVisible = true
+                views.bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_user))
+                views.bootstrapTitleText.text = getString(R.string.account_password)
                 showFragment(BootstrapAccountPasswordFragment::class, Bundle())
             }
             is BootstrapStep.Initializing                -> {
-                bootstrapIcon.isVisible = true
-                bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_key_24dp))
-                bootstrapTitleText.text = getString(R.string.bootstrap_loading_title)
+                views.bootstrapIcon.isVisible = true
+                views.bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_key_24dp))
+                views.bootstrapTitleText.text = getString(R.string.bootstrap_loading_title)
                 showFragment(BootstrapWaitingFragment::class, Bundle())
             }
             is BootstrapStep.SaveRecoveryKey             -> {
-                bootstrapIcon.isVisible = true
-                bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_key_24dp))
-                bootstrapTitleText.text = getString(R.string.bottom_sheet_save_your_recovery_key_title)
+                views.bootstrapIcon.isVisible = true
+                views.bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_key_24dp))
+                views.bootstrapTitleText.text = getString(R.string.bottom_sheet_save_your_recovery_key_title)
                 showFragment(BootstrapSaveRecoveryKeyFragment::class, Bundle())
             }
             is BootstrapStep.DoneSuccess                 -> {
-                bootstrapIcon.isVisible = true
-                bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_key_24dp))
-                bootstrapTitleText.text = getString(R.string.bootstrap_finish_title)
+                views.bootstrapIcon.isVisible = true
+                views.bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(requireContext(), R.drawable.ic_security_key_24dp))
+                views.bootstrapTitleText.text = getString(R.string.bootstrap_finish_title)
                 showFragment(BootstrapConclusionFragment::class, Bundle())
             }
             is BootstrapStep.GetBackupSecretForMigration -> {
                 val isKey = state.step.useKey()
                 val drawableRes = if (isKey) R.drawable.ic_security_key_24dp else R.drawable.ic_security_phrase_24dp
-                bootstrapIcon.isVisible = true
-                bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(
+                views.bootstrapIcon.isVisible = true
+                views.bootstrapIcon.setImageDrawable(ContextCompat.getDrawable(
                         requireContext(),
                         drawableRes)
                 )
-                bootstrapTitleText.text = getString(R.string.upgrade_security)
+                views.bootstrapTitleText.text = getString(R.string.upgrade_security)
                 showFragment(BootstrapMigrateBackupFragment::class, Bundle())
             }
         }.exhaustive

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapConclusionFragment.kt

@@ -17,7 +17,9 @@
 package im.vector.app.features.crypto.recover
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.core.text.toSpannable
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
@@ -25,27 +27,30 @@ import im.vector.app.R
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.resources.ColorProvider
 import im.vector.app.core.utils.colorizeMatchingText
-import kotlinx.android.synthetic.main.fragment_bootstrap_conclusion.*
+import im.vector.app.databinding.FragmentBootstrapConclusionBinding
+
 import javax.inject.Inject
 
 class BootstrapConclusionFragment @Inject constructor(
         private val colorProvider: ColorProvider
-) : VectorBaseFragment() {
+) : VectorBaseFragment<FragmentBootstrapConclusionBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_conclusion
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapConclusionBinding {
+        return FragmentBootstrapConclusionBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        bootstrapConclusionContinue.clickableView.debouncedClicks { sharedViewModel.handle(BootstrapActions.Completed) }
+        views.bootstrapConclusionContinue.views.itemVerificationClickableZone.debouncedClicks { sharedViewModel.handle(BootstrapActions.Completed) }
     }
 
     override fun invalidate() = withState(sharedViewModel) { state ->
         if (state.step !is BootstrapStep.DoneSuccess) return@withState
 
-        bootstrapConclusionText.text = getString(
+        views.bootstrapConclusionText.text = getString(
                 R.string.bootstrap_cross_signing_success,
                 getString(R.string.recovery_passphrase),
                 getString(R.string.message_key)

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapConfirmPassphraseFragment.kt

@@ -17,7 +17,9 @@
 package im.vector.app.features.crypto.recover
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import androidx.core.view.isGone
 import com.airbnb.mvrx.parentFragmentViewModel
@@ -28,32 +30,36 @@ import im.vector.app.R
 import im.vector.app.core.extensions.hideKeyboard
 import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentBootstrapEnterPassphraseBinding
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.synthetic.main.fragment_bootstrap_enter_passphrase.*
+
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
-class BootstrapConfirmPassphraseFragment @Inject constructor() : VectorBaseFragment() {
+class BootstrapConfirmPassphraseFragment @Inject constructor()
+    : VectorBaseFragment<FragmentBootstrapEnterPassphraseBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_enter_passphrase
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapEnterPassphraseBinding {
+        return FragmentBootstrapEnterPassphraseBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        ssss_passphrase_security_progress.isGone = true
+        views.ssssPassphraseSecurityProgress.isGone = true
 
-        bootstrapDescriptionText.text = getString(R.string.set_a_security_phrase_again_notice)
-        ssss_passphrase_enter_edittext.hint = getString(R.string.set_a_security_phrase_hint)
+        views.bootstrapDescriptionText.text = getString(R.string.set_a_security_phrase_again_notice)
+        views.ssssPassphraseEnterEdittext.hint = getString(R.string.set_a_security_phrase_hint)
 
         withState(sharedViewModel) {
             // set initial value (useful when coming back)
-            ssss_passphrase_enter_edittext.setText(it.passphraseRepeat ?: "")
-            ssss_passphrase_enter_edittext.requestFocus()
+            views.ssssPassphraseEnterEdittext.setText(it.passphraseRepeat ?: "")
+            views.ssssPassphraseEnterEdittext.requestFocus()
         }
 
-        ssss_passphrase_enter_edittext.editorActionEvents()
+        views.ssssPassphraseEnterEdittext.editorActionEvents()
                 .throttleFirst(300, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe {
@@ -63,9 +69,9 @@ class BootstrapConfirmPassphraseFragment @Inject constructor() : VectorBaseFragm
                 }
                 .disposeOnDestroyView()
 
-        ssss_passphrase_enter_edittext.textChanges()
+        views.ssssPassphraseEnterEdittext.textChanges()
                 .subscribe {
-                    ssss_passphrase_enter_til.error = null
+                    views.ssssPassphraseEnterTil.error = null
                     sharedViewModel.handle(BootstrapActions.UpdateConfirmCandidatePassphrase(it?.toString() ?: ""))
                 }
                 .disposeOnDestroyView()
@@ -78,20 +84,20 @@ class BootstrapConfirmPassphraseFragment @Inject constructor() : VectorBaseFragm
 //            }
         }
 
-        ssss_view_show_password.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
-        bootstrapSubmit.debouncedClicks { submit() }
+        views.ssssViewShowPassword.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
+        views.bootstrapSubmit.debouncedClicks { submit() }
     }
 
     private fun submit() = withState(sharedViewModel) { state ->
         if (state.step !is BootstrapStep.ConfirmPassphrase) {
             return@withState
         }
-        val passphrase = ssss_passphrase_enter_edittext.text?.toString()
+        val passphrase = views.ssssPassphraseEnterEdittext.text?.toString()
         when {
             passphrase.isNullOrBlank()     ->
-                ssss_passphrase_enter_til.error = getString(R.string.passphrase_empty_error_message)
+                views.ssssPassphraseEnterTil.error = getString(R.string.passphrase_empty_error_message)
             passphrase != state.passphrase ->
-                ssss_passphrase_enter_til.error = getString(R.string.passphrase_passphrase_does_not_match)
+                views.ssssPassphraseEnterTil.error = getString(R.string.passphrase_passphrase_does_not_match)
             else                           -> {
                 view?.hideKeyboard()
                 sharedViewModel.handle(BootstrapActions.DoInitialize(passphrase))
@@ -102,8 +108,8 @@ class BootstrapConfirmPassphraseFragment @Inject constructor() : VectorBaseFragm
     override fun invalidate() = withState(sharedViewModel) { state ->
         if (state.step is BootstrapStep.ConfirmPassphrase) {
             val isPasswordVisible = state.step.isPasswordVisible
-            ssss_passphrase_enter_edittext.showPassword(isPasswordVisible, updateCursor = false)
-            ssss_view_show_password.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+            views.ssssPassphraseEnterEdittext.showPassword(isPasswordVisible, updateCursor = false)
+            views.ssssViewShowPassword.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
         }
     }
 }

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapEnterPassphraseFragment.kt

@@ -17,7 +17,9 @@
 package im.vector.app.features.crypto.recover
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
@@ -26,29 +28,33 @@ import com.jakewharton.rxbinding3.widget.textChanges
 import im.vector.app.R
 import im.vector.app.core.extensions.showPassword
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentBootstrapEnterPassphraseBinding
 import im.vector.app.features.settings.VectorLocale
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.synthetic.main.fragment_bootstrap_enter_passphrase.*
+
 import java.util.concurrent.TimeUnit
 import javax.inject.Inject
 
-class BootstrapEnterPassphraseFragment @Inject constructor() : VectorBaseFragment() {
+class BootstrapEnterPassphraseFragment @Inject constructor()
+    : VectorBaseFragment<FragmentBootstrapEnterPassphraseBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_enter_passphrase
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapEnterPassphraseBinding {
+        return FragmentBootstrapEnterPassphraseBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        bootstrapDescriptionText.text = getString(R.string.set_a_security_phrase_notice)
-        ssss_passphrase_enter_edittext.hint = getString(R.string.set_a_security_phrase_hint)
+        views.bootstrapDescriptionText.text = getString(R.string.set_a_security_phrase_notice)
+        views.ssssPassphraseEnterEdittext.hint = getString(R.string.set_a_security_phrase_hint)
 
         withState(sharedViewModel) {
             // set initial value (useful when coming back)
-            ssss_passphrase_enter_edittext.setText(it.passphrase ?: "")
+            views.ssssPassphraseEnterEdittext.setText(it.passphrase ?: "")
         }
-        ssss_passphrase_enter_edittext.editorActionEvents()
+        views.ssssPassphraseEnterEdittext.editorActionEvents()
                 .throttleFirst(300, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe {
@@ -58,7 +64,7 @@ class BootstrapEnterPassphraseFragment @Inject constructor() : VectorBaseFragmen
                 }
                 .disposeOnDestroyView()
 
-        ssss_passphrase_enter_edittext.textChanges()
+        views.ssssPassphraseEnterEdittext.textChanges()
                 .subscribe {
                     // ssss_passphrase_enter_til.error = null
                     sharedViewModel.handle(BootstrapActions.UpdateCandidatePassphrase(it?.toString() ?: ""))
@@ -74,8 +80,8 @@ class BootstrapEnterPassphraseFragment @Inject constructor() : VectorBaseFragmen
 //            }
         }
 
-        ssss_view_show_password.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
-        bootstrapSubmit.debouncedClicks { submit() }
+        views.ssssViewShowPassword.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
+        views.bootstrapSubmit.debouncedClicks { submit() }
     }
 
     private fun submit() = withState(sharedViewModel) { state ->
@@ -83,11 +89,11 @@ class BootstrapEnterPassphraseFragment @Inject constructor() : VectorBaseFragmen
             return@withState
         }
         val score = state.passphraseStrength.invoke()?.score
-        val passphrase = ssss_passphrase_enter_edittext.text?.toString()
+        val passphrase = views.ssssPassphraseEnterEdittext.text?.toString()
         if (passphrase.isNullOrBlank()) {
-            ssss_passphrase_enter_til.error = getString(R.string.passphrase_empty_error_message)
+            views.ssssPassphraseEnterTil.error = getString(R.string.passphrase_empty_error_message)
         } else if (score != 4) {
-            ssss_passphrase_enter_til.error = getString(R.string.passphrase_passphrase_too_weak)
+            views.ssssPassphraseEnterTil.error = getString(R.string.passphrase_passphrase_too_weak)
         } else {
             sharedViewModel.handle(BootstrapActions.GoToConfirmPassphrase(passphrase))
         }
@@ -96,21 +102,21 @@ class BootstrapEnterPassphraseFragment @Inject constructor() : VectorBaseFragmen
     override fun invalidate() = withState(sharedViewModel) { state ->
         if (state.step is BootstrapStep.SetupPassphrase) {
             val isPasswordVisible = state.step.isPasswordVisible
-            ssss_passphrase_enter_edittext.showPassword(isPasswordVisible, updateCursor = false)
-            ssss_view_show_password.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+            views.ssssPassphraseEnterEdittext.showPassword(isPasswordVisible, updateCursor = false)
+            views.ssssViewShowPassword.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
 
             state.passphraseStrength.invoke()?.let { strength ->
                 val score = strength.score
-                ssss_passphrase_security_progress.strength = score
+                views.ssssPassphraseSecurityProgress.strength = score
                 if (score in 1..3) {
                     val hint =
                             strength.feedback?.getWarning(VectorLocale.applicationLocale)?.takeIf { it.isNotBlank() }
                                     ?: strength.feedback?.getSuggestions(VectorLocale.applicationLocale)?.firstOrNull()
-                    if (hint != null && hint != ssss_passphrase_enter_til.error.toString()) {
-                        ssss_passphrase_enter_til.error = hint
+                    if (hint != null && hint != views.ssssPassphraseEnterTil.error.toString()) {
+                        views.ssssPassphraseEnterTil.error = hint
                     }
                 } else {
-                    ssss_passphrase_enter_til.error = null
+                    views.ssssPassphraseEnterTil.error = null
                 }
             }
         }

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapMigrateBackupFragment.kt

@@ -21,7 +21,9 @@ import android.os.Bundle
 import android.text.InputType.TYPE_CLASS_TEXT
 import android.text.InputType.TYPE_TEXT_FLAG_MULTI_LINE
 import android.text.InputType.TYPE_TEXT_VARIATION_VISIBLE_PASSWORD
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import androidx.core.text.toSpannable
 import androidx.core.view.isVisible
@@ -37,9 +39,9 @@ import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.resources.ColorProvider
 import im.vector.app.core.utils.colorizeMatchingText
 import im.vector.app.core.utils.startImportTextFromFileIntent
+import im.vector.app.databinding.FragmentBootstrapMigrateBackupBinding
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.synthetic.main.fragment_bootstrap_enter_passphrase.bootstrapDescriptionText
-import kotlinx.android.synthetic.main.fragment_bootstrap_migrate_backup.*
+
 import org.matrix.android.sdk.api.extensions.tryOrNull
 import org.matrix.android.sdk.internal.crypto.keysbackup.util.isValidRecoveryKey
 import java.util.concurrent.TimeUnit
@@ -47,9 +49,11 @@ import javax.inject.Inject
 
 class BootstrapMigrateBackupFragment @Inject constructor(
         private val colorProvider: ColorProvider
-) : VectorBaseFragment() {
+) : VectorBaseFragment<FragmentBootstrapMigrateBackupBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_migrate_backup
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapMigrateBackupBinding {
+        return FragmentBootstrapMigrateBackupBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
@@ -58,9 +62,9 @@ class BootstrapMigrateBackupFragment @Inject constructor(
 
         withState(sharedViewModel) {
             // set initial value (useful when coming back)
-            bootstrapMigrateEditText.setText(it.passphrase ?: "")
+            views.bootstrapMigrateEditText.setText(it.passphrase ?: "")
         }
-        bootstrapMigrateEditText.editorActionEvents()
+        views.bootstrapMigrateEditText.editorActionEvents()
                 .throttleFirst(300, TimeUnit.MILLISECONDS)
                 .observeOn(AndroidSchedulers.mainThread())
                 .subscribe {
@@ -70,19 +74,19 @@ class BootstrapMigrateBackupFragment @Inject constructor(
                 }
                 .disposeOnDestroyView()
 
-        bootstrapMigrateEditText.textChanges()
+        views.bootstrapMigrateEditText.textChanges()
                 .skipInitialValue()
                 .subscribe {
-                    bootstrapRecoveryKeyEnterTil.error = null
+                    views.bootstrapRecoveryKeyEnterTil.error = null
                     // sharedViewModel.handle(BootstrapActions.UpdateCandidatePassphrase(it?.toString() ?: ""))
                 }
                 .disposeOnDestroyView()
 
         // sharedViewModel.observeViewEvents {}
-        bootstrapMigrateContinueButton.debouncedClicks { submit() }
-        bootstrapMigrateShowPassword.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
-        bootstrapMigrateForgotPassphrase.debouncedClicks { sharedViewModel.handle(BootstrapActions.HandleForgotBackupPassphrase) }
-        bootstrapMigrateUseFile.debouncedClicks { startImportTextFromFileIntent(requireContext(), importFileStartForActivityResult) }
+        views.bootstrapMigrateContinueButton.debouncedClicks { submit() }
+        views.bootstrapMigrateShowPassword.debouncedClicks { sharedViewModel.handle(BootstrapActions.TogglePasswordVisibility) }
+        views.bootstrapMigrateForgotPassphrase.debouncedClicks { sharedViewModel.handle(BootstrapActions.HandleForgotBackupPassphrase) }
+        views.bootstrapMigrateUseFile.debouncedClicks { startImportTextFromFileIntent(requireContext(), importFileStartForActivityResult) }
     }
 
     private fun submit() = withState(sharedViewModel) { state ->
@@ -90,12 +94,12 @@ class BootstrapMigrateBackupFragment @Inject constructor(
 
         val isEnteringKey = getBackupSecretForMigration.useKey()
 
-        val secret = bootstrapMigrateEditText.text?.toString()
+        val secret = views.bootstrapMigrateEditText.text?.toString()
         if (secret.isNullOrEmpty()) {
             val errRes = if (isEnteringKey) R.string.recovery_key_empty_error_message else R.string.passphrase_empty_error_message
-            bootstrapRecoveryKeyEnterTil.error = getString(errRes)
+            views.bootstrapRecoveryKeyEnterTil.error = getString(errRes)
         } else if (isEnteringKey && !isValidRecoveryKey(secret)) {
-            bootstrapRecoveryKeyEnterTil.error = getString(R.string.bootstrap_invalid_recovery_key)
+            views.bootstrapRecoveryKeyEnterTil.error = getString(R.string.bootstrap_invalid_recovery_key)
         } else {
             view?.hideKeyboard()
             if (isEnteringKey) {
@@ -112,38 +116,38 @@ class BootstrapMigrateBackupFragment @Inject constructor(
         val isEnteringKey = getBackupSecretForMigration.useKey()
 
         if (isEnteringKey) {
-            bootstrapMigrateShowPassword.isVisible = false
-            bootstrapMigrateEditText.inputType = TYPE_CLASS_TEXT or TYPE_TEXT_VARIATION_VISIBLE_PASSWORD or TYPE_TEXT_FLAG_MULTI_LINE
+            views.bootstrapMigrateShowPassword.isVisible = false
+            views.bootstrapMigrateEditText.inputType = TYPE_CLASS_TEXT or TYPE_TEXT_VARIATION_VISIBLE_PASSWORD or TYPE_TEXT_FLAG_MULTI_LINE
 
             val recKey = getString(R.string.bootstrap_migration_backup_recovery_key)
-            bootstrapDescriptionText.text = getString(R.string.enter_account_password, recKey)
+            views.bootstrapDescriptionText.text = getString(R.string.enter_account_password, recKey)
 
-            bootstrapMigrateEditText.hint = recKey
+            views.bootstrapMigrateEditText.hint = recKey
 
-            bootstrapMigrateEditText.hint = recKey
-            bootstrapMigrateForgotPassphrase.isVisible = false
-            bootstrapMigrateUseFile.isVisible = true
+            views.bootstrapMigrateEditText.hint = recKey
+            views.bootstrapMigrateForgotPassphrase.isVisible = false
+            views.bootstrapMigrateUseFile.isVisible = true
         } else {
-            bootstrapMigrateShowPassword.isVisible = true
+            views.bootstrapMigrateShowPassword.isVisible = true
 
             if (state.step is BootstrapStep.GetBackupSecretPassForMigration) {
                 val isPasswordVisible = state.step.isPasswordVisible
-                bootstrapMigrateEditText.showPassword(isPasswordVisible, updateCursor = false)
-                bootstrapMigrateShowPassword.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
+                views.bootstrapMigrateEditText.showPassword(isPasswordVisible, updateCursor = false)
+                views.bootstrapMigrateShowPassword.setImageResource(if (isPasswordVisible) R.drawable.ic_eye_closed else R.drawable.ic_eye)
             }
 
-            bootstrapDescriptionText.text = getString(R.string.bootstrap_migration_enter_backup_password)
+            views.bootstrapDescriptionText.text = getString(R.string.bootstrap_migration_enter_backup_password)
 
-            bootstrapMigrateEditText.hint = getString(R.string.passphrase_enter_passphrase)
+            views.bootstrapMigrateEditText.hint = getString(R.string.passphrase_enter_passphrase)
 
-            bootstrapMigrateForgotPassphrase.isVisible = true
+            views.bootstrapMigrateForgotPassphrase.isVisible = true
 
             val recKey = getString(R.string.bootstrap_migration_use_recovery_key)
-            bootstrapMigrateForgotPassphrase.text = getString(R.string.bootstrap_migration_with_passphrase_helper_with_link, recKey)
+            views.bootstrapMigrateForgotPassphrase.text = getString(R.string.bootstrap_migration_with_passphrase_helper_with_link, recKey)
                     .toSpannable()
                     .colorizeMatchingText(recKey, colorProvider.getColorFromAttribute(android.R.attr.textColorLink))
 
-            bootstrapMigrateUseFile.isVisible = false
+            views.bootstrapMigrateUseFile.isVisible = false
         }
     }
 
@@ -155,7 +159,7 @@ class BootstrapMigrateBackupFragment @Inject constructor(
                             ?.bufferedReader()
                             ?.use { it.readText() }
                             ?.let {
-                                bootstrapMigrateEditText.setText(it)
+                                views.bootstrapMigrateEditText.setText(it)
                             }
                 }
             }

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapSaveRecoveryKeyFragment.kt

@@ -20,7 +20,9 @@ import android.app.Activity
 import android.content.ActivityNotFoundException
 import android.content.Intent
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
@@ -30,7 +32,8 @@ import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.resources.ColorProvider
 import im.vector.app.core.utils.startSharePlainTextIntent
 import im.vector.app.core.utils.toast
-import kotlinx.android.synthetic.main.fragment_bootstrap_save_key.*
+import im.vector.app.databinding.FragmentBootstrapSaveKeyBinding
+
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
@@ -38,18 +41,20 @@ import javax.inject.Inject
 
 class BootstrapSaveRecoveryKeyFragment @Inject constructor(
         private val colorProvider: ColorProvider
-) : VectorBaseFragment() {
+) : VectorBaseFragment<FragmentBootstrapSaveKeyBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_save_key
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapSaveKeyBinding {
+        return FragmentBootstrapSaveKeyBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
 
-        recoverySave.clickableView.debouncedClicks { downloadRecoveryKey() }
-        recoveryCopy.clickableView.debouncedClicks { shareRecoveryKey() }
-        recoveryContinue.clickableView.debouncedClicks {
+        views.recoverySave.views.itemVerificationClickableZone.debouncedClicks { downloadRecoveryKey() }
+        views.recoveryCopy.views.itemVerificationClickableZone.debouncedClicks { shareRecoveryKey() }
+        views.recoveryContinue.views.itemVerificationClickableZone.debouncedClicks {
             // We do not display the final Fragment anymore
             // TODO Do some cleanup
             // sharedViewModel.handle(BootstrapActions.GoToCompleted)
@@ -112,7 +117,7 @@ class BootstrapSaveRecoveryKeyFragment @Inject constructor(
         val step = state.step
         if (step !is BootstrapStep.SaveRecoveryKey) return@withState
 
-        recoveryContinue.isVisible = step.isSaved
-        bootstrapRecoveryKeyText.text = state.recoveryKeyCreationInfo?.recoveryKey?.formatRecoveryKey()
+        views.recoveryContinue.isVisible = step.isSaved
+        views.bootstrapRecoveryKeyText.text = state.recoveryKeyCreationInfo?.recoveryKey?.formatRecoveryKey()
     }
 }

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapSetupRecoveryKeyFragment.kt

@@ -17,18 +17,24 @@
 package im.vector.app.features.crypto.recover
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
 import im.vector.app.R
 import im.vector.app.core.platform.VectorBaseFragment
-import kotlinx.android.synthetic.main.fragment_bootstrap_setup_recovery.*
+import im.vector.app.databinding.FragmentBootstrapSetupRecoveryBinding
+
 import javax.inject.Inject
 
-class BootstrapSetupRecoveryKeyFragment @Inject constructor() : VectorBaseFragment() {
+class BootstrapSetupRecoveryKeyFragment @Inject constructor()
+    : VectorBaseFragment<FragmentBootstrapSetupRecoveryBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_setup_recovery
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapSetupRecoveryBinding {
+        return FragmentBootstrapSetupRecoveryBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
@@ -36,15 +42,15 @@ class BootstrapSetupRecoveryKeyFragment @Inject constructor() : VectorBaseFragme
         super.onViewCreated(view, savedInstanceState)
 
         // Actions when a key backup exist
-        bootstrapSetupSecureSubmit.clickableView.debouncedClicks {
+        views.bootstrapSetupSecureSubmit.views.itemVerificationClickableZone.debouncedClicks {
             sharedViewModel.handle(BootstrapActions.StartKeyBackupMigration)
         }
 
         // Actions when there is no key backup
-        bootstrapSetupSecureUseSecurityKey.clickableView.debouncedClicks {
+        views.bootstrapSetupSecureUseSecurityKey.views.itemVerificationClickableZone.debouncedClicks {
             sharedViewModel.handle(BootstrapActions.Start(userWantsToEnterPassphrase = false))
         }
-        bootstrapSetupSecureUseSecurityPassphrase.clickableView.debouncedClicks {
+        views.bootstrapSetupSecureUseSecurityPassphrase.views.itemVerificationClickableZone.debouncedClicks {
             sharedViewModel.handle(BootstrapActions.Start(userWantsToEnterPassphrase = true))
         }
     }
@@ -53,23 +59,23 @@ class BootstrapSetupRecoveryKeyFragment @Inject constructor() : VectorBaseFragme
         if (state.step is BootstrapStep.FirstForm) {
             if (state.step.keyBackUpExist) {
                 // Display the set up action
-                bootstrapSetupSecureSubmit.isVisible = true
-                bootstrapSetupSecureUseSecurityKey.isVisible = false
-                bootstrapSetupSecureUseSecurityPassphrase.isVisible = false
-                bootstrapSetupSecureUseSecurityPassphraseSeparator.isVisible = false
+                views.bootstrapSetupSecureSubmit.isVisible = true
+                views.bootstrapSetupSecureUseSecurityKey.isVisible = false
+                views.bootstrapSetupSecureUseSecurityPassphrase.isVisible = false
+                views.bootstrapSetupSecureUseSecurityPassphraseSeparator.isVisible = false
             } else {
                 if (state.step.reset) {
-                    bootstrapSetupSecureText.text = getString(R.string.reset_secure_backup_title)
-                    bootstrapSetupWarningTextView.isVisible = true
+                    views.bootstrapSetupSecureText.text = getString(R.string.reset_secure_backup_title)
+                    views.bootstrapSetupWarningTextView.isVisible = true
                 } else {
-                    bootstrapSetupSecureText.text = getString(R.string.bottom_sheet_setup_secure_backup_subtitle)
-                    bootstrapSetupWarningTextView.isVisible = false
+                    views.bootstrapSetupSecureText.text = getString(R.string.bottom_sheet_setup_secure_backup_subtitle)
+                    views.bootstrapSetupWarningTextView.isVisible = false
                 }
                 // Choose between create a passphrase or use a recovery key
-                bootstrapSetupSecureSubmit.isVisible = false
-                bootstrapSetupSecureUseSecurityKey.isVisible = true
-                bootstrapSetupSecureUseSecurityPassphrase.isVisible = true
-                bootstrapSetupSecureUseSecurityPassphraseSeparator.isVisible = true
+                views.bootstrapSetupSecureSubmit.isVisible = false
+                views.bootstrapSetupSecureUseSecurityKey.isVisible = true
+                views.bootstrapSetupSecureUseSecurityPassphrase.isVisible = true
+                views.bootstrapSetupSecureUseSecurityPassphraseSeparator.isVisible = true
             }
         }
     }

vector/src/main/java/im/vector/app/features/crypto/recover/BootstrapWaitingFragment.kt

@@ -16,26 +16,31 @@
 
 package im.vector.app.features.crypto.recover
 
+import android.view.LayoutInflater
+import android.view.ViewGroup
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.platform.VectorBaseFragment
-import kotlinx.android.synthetic.main.fragment_bootstrap_waiting.*
+import im.vector.app.databinding.FragmentBootstrapWaitingBinding
+
 import javax.inject.Inject
 
-class BootstrapWaitingFragment @Inject constructor() : VectorBaseFragment() {
+class BootstrapWaitingFragment @Inject constructor()
+    : VectorBaseFragment<FragmentBootstrapWaitingBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_bootstrap_waiting
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentBootstrapWaitingBinding {
+        return FragmentBootstrapWaitingBinding.inflate(inflater, container, false)
+    }
 
     val sharedViewModel: BootstrapSharedViewModel by parentFragmentViewModel()
 
     override fun invalidate() = withState(sharedViewModel) { state ->
         when (state.step) {
             is BootstrapStep.Initializing -> {
-                bootstrapLoadingStatusText.isVisible = true
-                bootstrapDescriptionText.isVisible = true
-                bootstrapLoadingStatusText.text = state.initializationWaitingViewData?.message
+                views.bootstrapLoadingStatusText.isVisible = true
+                views.bootstrapDescriptionText.isVisible = true
+                views.bootstrapLoadingStatusText.text = state.initializationWaitingViewData?.message
             }
 //            is BootstrapStep.CheckingMigration -> {
 //                bootstrapLoadingStatusText.isVisible = false
@@ -43,8 +48,8 @@ class BootstrapWaitingFragment @Inject constructor() : VectorBaseFragment() {
 //            }
             else                          -> {
                 // just show the spinner
-                bootstrapLoadingStatusText.isVisible = false
-                bootstrapDescriptionText.isVisible = false
+                views.bootstrapLoadingStatusText.isVisible = false
+                views.bootstrapDescriptionText.isVisible = false
             }
         }
     }

vector/src/main/java/im/vector/app/features/crypto/recover/KeepItSafeDialog.kt

@@ -19,10 +19,10 @@ package im.vector.app.features.crypto.recover
 import android.app.Activity
 import android.content.DialogInterface
 import android.view.KeyEvent
-import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
 import androidx.core.content.ContextCompat
 import im.vector.app.R
+import im.vector.app.databinding.DialogRecoveryKeySavedInfoBinding
 import me.gujun.android.span.image
 import me.gujun.android.span.span
 
@@ -30,10 +30,9 @@ class KeepItSafeDialog {
 
     fun show(activity: Activity) {
         val dialogLayout = activity.layoutInflater.inflate(R.layout.dialog_recovery_key_saved_info, null)
+        val views = DialogRecoveryKeySavedInfoBinding.bind(dialogLayout)
 
-        val descriptionText = dialogLayout.findViewById<TextView>(R.id.keepItSafeText)
-
-        descriptionText.text = span {
+        views.keepItSafeText.text = span {
             span {
                 image(ContextCompat.getDrawable(activity, R.drawable.ic_check_on)!!)
                 +" "

vector/src/main/java/im/vector/app/features/crypto/verification/IncomingVerificationRequestHandler.kt

@@ -69,7 +69,7 @@ class IncomingVerificationRequestHandler @Inject constructor(
                         context.getString(R.string.sas_incoming_request_notif_content, name),
                         R.drawable.ic_shield_black,
                         shouldBeDisplayedIn = { activity ->
-                            if (activity is VectorBaseActivity) {
+                            if (activity is VectorBaseActivity<*>) {
                                 // TODO a bit too ugly :/
                                 activity.supportFragmentManager.findFragmentByTag(VerificationBottomSheet.WAITING_SELF_VERIF_TAG)?.let {
                                     false.also {
@@ -82,7 +82,7 @@ class IncomingVerificationRequestHandler @Inject constructor(
                 )
                         .apply {
                             contentAction = Runnable {
-                                (weakCurrentActivity?.get() as? VectorBaseActivity)?.let {
+                                (weakCurrentActivity?.get() as? VectorBaseActivity<*>)?.let {
                                     it.navigator.performDeviceVerification(it, tx.otherUserId, tx.transactionId)
                                 }
                             }
@@ -98,7 +98,7 @@ class IncomingVerificationRequestHandler @Inject constructor(
                             addButton(
                                     context.getString(R.string.action_open),
                                     Runnable {
-                                        (weakCurrentActivity?.get() as? VectorBaseActivity)?.let {
+                                        (weakCurrentActivity?.get() as? VectorBaseActivity<*>)?.let {
                                             it.navigator.performDeviceVerification(it, tx.otherUserId, tx.transactionId)
                                         }
                                     }
@@ -139,7 +139,7 @@ class IncomingVerificationRequestHandler @Inject constructor(
             )
                     .apply {
                         contentAction = Runnable {
-                            (weakCurrentActivity?.get() as? VectorBaseActivity)?.let {
+                            (weakCurrentActivity?.get() as? VectorBaseActivity<*>)?.let {
                                 val roomId = pr.roomId
                                 if (roomId.isNullOrBlank()) {
                                     it.navigator.waitSessionVerification(it)

vector/src/main/java/im/vector/app/features/crypto/verification/QuadSLoadingFragment.kt

@@ -16,10 +16,14 @@
 
 package im.vector.app.features.crypto.verification
 
-import im.vector.app.R
+import android.view.LayoutInflater
+import android.view.ViewGroup
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentProgressBinding
 import javax.inject.Inject
 
-class QuadSLoadingFragment @Inject constructor() : VectorBaseFragment() {
-    override fun getLayoutResId() = R.layout.fragment_progress
+class QuadSLoadingFragment @Inject constructor() : VectorBaseFragment<FragmentProgressBinding>() {
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentProgressBinding {
+        return FragmentProgressBinding.inflate(inflater, container, false)
+    }
 }

vector/src/main/java/im/vector/app/features/crypto/verification/VerificationBottomSheet.kt

@@ -20,13 +20,12 @@ import android.app.Dialog
 import android.os.Bundle
 import android.os.Parcelable
 import android.view.KeyEvent
+import android.view.LayoutInflater
 import android.view.View
-import android.widget.ImageView
-import android.widget.TextView
+import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
 import androidx.core.view.isVisible
 import androidx.fragment.app.Fragment
-import butterknife.BindView
 import com.airbnb.mvrx.MvRx
 import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
@@ -37,6 +36,7 @@ import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.extensions.registerStartForActivityResult
 import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.core.platform.VectorBaseBottomSheetDialogFragment
+import im.vector.app.databinding.BottomSheetVerificationBinding
 import im.vector.app.features.crypto.quads.SharedSecureStorageActivity
 import im.vector.app.features.crypto.verification.cancel.VerificationCancelFragment
 import im.vector.app.features.crypto.verification.cancel.VerificationNotMeFragment
@@ -48,7 +48,7 @@ import im.vector.app.features.crypto.verification.qrconfirmation.VerificationQrS
 import im.vector.app.features.crypto.verification.request.VerificationRequestFragment
 import im.vector.app.features.home.AvatarRenderer
 import im.vector.app.features.settings.VectorSettingsActivity
-import kotlinx.android.parcel.Parcelize
+import kotlinx.parcelize.Parcelize
 import org.matrix.android.sdk.api.session.Session
 import org.matrix.android.sdk.api.session.crypto.crosssigning.KEYBACKUP_SECRET_SSSS_NAME
 import org.matrix.android.sdk.api.session.crypto.crosssigning.MASTER_KEY_SSSS_NAME
@@ -60,7 +60,7 @@ import timber.log.Timber
 import javax.inject.Inject
 import kotlin.reflect.KClass
 
-class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
+class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment<BottomSheetVerificationBinding>() {
 
     @Parcelize
     data class VerificationArgs(
@@ -86,16 +86,9 @@ class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
         injector.inject(this)
     }
 
-    @BindView(R.id.verificationRequestName)
-    lateinit var otherUserNameText: TextView
-
-    @BindView(R.id.verificationRequestShield)
-    lateinit var otherUserShield: ImageView
-
-    @BindView(R.id.verificationRequestAvatar)
-    lateinit var otherUserAvatarImageView: ImageView
-
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationBinding {
+        return BottomSheetVerificationBinding.inflate(inflater, container, false)
+    }
 
     init {
         isCancelable = false
@@ -126,7 +119,9 @@ class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
                 }
                 VerificationBottomSheetViewEvents.GoToSettings         -> {
                     dismiss()
-                    (activity as? VectorBaseActivity)?.navigator?.openSettings(requireContext(), VectorSettingsActivity.EXTRA_DIRECT_ACCESS_SECURITY_PRIVACY)
+                    (activity as? VectorBaseActivity<*>)?.let { activity ->
+                        activity.navigator.openSettings(activity, VectorSettingsActivity.EXTRA_DIRECT_ACCESS_SECURITY_PRIVACY)
+                    }
                 }
             }.exhaustive
         }
@@ -163,27 +158,27 @@ class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
     override fun invalidate() = withState(viewModel) { state ->
         state.otherUserMxItem?.let { matrixItem ->
             if (state.isMe) {
-                avatarRenderer.render(matrixItem, otherUserAvatarImageView)
+                avatarRenderer.render(matrixItem, views.otherUserAvatarImageView)
                 if (state.sasTransactionState == VerificationTxState.Verified
                         || state.qrTransactionState == VerificationTxState.Verified
                         || state.verifiedFromPrivateKeys) {
-                    otherUserShield.setImageResource(R.drawable.ic_shield_trusted)
+                    views.otherUserShield.setImageResource(R.drawable.ic_shield_trusted)
                 } else {
-                    otherUserShield.setImageResource(R.drawable.ic_shield_warning)
+                    views.otherUserShield.setImageResource(R.drawable.ic_shield_warning)
                 }
-                otherUserNameText.text = getString(
+                views.otherUserNameText.text = getString(
                         if (state.selfVerificationMode) R.string.crosssigning_verify_this_session else R.string.crosssigning_verify_session
                 )
-                otherUserShield.isVisible = true
+                views.otherUserShield.isVisible = true
             } else {
-                avatarRenderer.render(matrixItem, otherUserAvatarImageView)
+                avatarRenderer.render(matrixItem, views.otherUserAvatarImageView)
 
                 if (state.sasTransactionState == VerificationTxState.Verified || state.qrTransactionState == VerificationTxState.Verified) {
-                    otherUserNameText.text = getString(R.string.verification_verified_user, matrixItem.getBestName())
-                    otherUserShield.isVisible = true
+                    views.otherUserNameText.text = getString(R.string.verification_verified_user, matrixItem.getBestName())
+                    views.otherUserShield.isVisible = true
                 } else {
-                    otherUserNameText.text = getString(R.string.verification_verify_user, matrixItem.getBestName())
-                    otherUserShield.isVisible = false
+                    views.otherUserNameText.text = getString(R.string.verification_verify_user, matrixItem.getBestName())
+                    views.otherUserShield.isVisible = false
                 }
             }
         }
@@ -200,13 +195,13 @@ class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
         }
 
         if (state.userThinkItsNotHim) {
-            otherUserNameText.text = getString(R.string.dialog_title_warning)
+            views.otherUserNameText.text = getString(R.string.dialog_title_warning)
             showFragment(VerificationNotMeFragment::class, Bundle())
             return@withState
         }
 
         if (state.userWantsToCancel) {
-            otherUserNameText.text = getString(R.string.are_you_sure)
+            views.otherUserNameText.text = getString(R.string.are_you_sure)
             showFragment(VerificationCancelFragment::class, Bundle())
             return@withState
         }
@@ -298,7 +293,7 @@ class VerificationBottomSheet : VectorBaseBottomSheetDialogFragment() {
         // Transaction has not yet started
         if (state.pendingRequest.invoke()?.cancelConclusion != null) {
             // The request has been declined, we should dismiss
-            otherUserNameText.text = getString(R.string.verification_cancelled)
+            views.otherUserNameText.text = getString(R.string.verification_cancelled)
             showFragment(VerificationConclusionFragment::class, Bundle().apply {
                 putParcelable(MvRx.KEY_ARG, VerificationConclusionFragment.Args(
                         false,

vector/src/main/java/im/vector/app/features/crypto/verification/cancel/VerificationCancelFragment.kt

@@ -17,24 +17,29 @@
 package im.vector.app.features.crypto.verification.cancel
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
 import im.vector.app.features.crypto.verification.VerificationBottomSheetViewModel
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+
 import javax.inject.Inject
 
 class VerificationCancelFragment @Inject constructor(
         val controller: VerificationCancelController
-) : VectorBaseFragment(), VerificationCancelController.Listener {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>(),
+        VerificationCancelController.Listener {
 
     private val viewModel by parentFragmentViewModel(VerificationBottomSheetViewModel::class)
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -42,13 +47,13 @@ class VerificationCancelFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
         controller.listener = this
     }
 

vector/src/main/java/im/vector/app/features/crypto/verification/cancel/VerificationNotMeFragment.kt

@@ -17,24 +17,29 @@
 package im.vector.app.features.crypto.verification.cancel
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
 import im.vector.app.features.crypto.verification.VerificationBottomSheetViewModel
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+
 import javax.inject.Inject
 
 class VerificationNotMeFragment @Inject constructor(
         val controller: VerificationNotMeController
-) : VectorBaseFragment(), VerificationNotMeController.Listener {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>(),
+        VerificationNotMeController.Listener {
 
     private val viewModel by parentFragmentViewModel(VerificationBottomSheetViewModel::class)
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -42,13 +47,13 @@ class VerificationNotMeFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
         controller.listener = this
     }
 

vector/src/main/java/im/vector/app/features/crypto/verification/choose/VerificationChooseMethodFragment.kt

@@ -17,11 +17,12 @@ package im.vector.app.features.crypto.verification.choose
 
 import android.app.Activity
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.extensions.registerStartForActivityResult
@@ -29,23 +30,27 @@ import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.PERMISSIONS_FOR_TAKING_PHOTO
 import im.vector.app.core.utils.checkPermissions
 import im.vector.app.core.utils.registerForPermissionsResult
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
 import im.vector.app.features.crypto.verification.VerificationAction
 import im.vector.app.features.crypto.verification.VerificationBottomSheetViewModel
 import im.vector.app.features.qrcode.QrCodeScannerActivity
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+
 import timber.log.Timber
 import javax.inject.Inject
 
 class VerificationChooseMethodFragment @Inject constructor(
         val verificationChooseMethodViewModelFactory: VerificationChooseMethodViewModel.Factory,
         val controller: VerificationChooseMethodController
-) : VectorBaseFragment(), VerificationChooseMethodController.Listener {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>(),
+        VerificationChooseMethodController.Listener {
 
     private val viewModel by fragmentViewModel(VerificationChooseMethodViewModel::class)
 
     private val sharedViewModel by parentFragmentViewModel(VerificationBottomSheetViewModel::class)
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -54,13 +59,13 @@ class VerificationChooseMethodFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
         controller.listener = this
     }
 

vector/src/main/java/im/vector/app/features/crypto/verification/conclusion/VerificationConclusionFragment.kt

@@ -17,23 +17,25 @@ package im.vector.app.features.crypto.verification.conclusion
 
 import android.os.Bundle
 import android.os.Parcelable
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
 import im.vector.app.features.crypto.verification.VerificationAction
 import im.vector.app.features.crypto.verification.VerificationBottomSheetViewModel
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+import kotlinx.parcelize.Parcelize
 import javax.inject.Inject
 
 class VerificationConclusionFragment @Inject constructor(
         val controller: VerificationConclusionController
-) : VectorBaseFragment(), VerificationConclusionController.Listener {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>(),
+        VerificationConclusionController.Listener {
 
     @Parcelize
     data class Args(
@@ -46,7 +48,9 @@ class VerificationConclusionFragment @Inject constructor(
 
     private val viewModel by fragmentViewModel(VerificationConclusionViewModel::class)
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -55,13 +59,13 @@ class VerificationConclusionFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
         controller.listener = this
     }
 

vector/src/main/java/im/vector/app/features/crypto/verification/emoji/VerificationEmojiCodeFragment.kt

@@ -16,29 +16,34 @@
 package im.vector.app.features.crypto.verification.emoji
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
 import im.vector.app.features.crypto.verification.VerificationAction
 import im.vector.app.features.crypto.verification.VerificationBottomSheetViewModel
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+
 import javax.inject.Inject
 
 class VerificationEmojiCodeFragment @Inject constructor(
         val viewModelFactory: VerificationEmojiCodeViewModel.Factory,
         val controller: VerificationEmojiCodeController
-) : VectorBaseFragment(), VerificationEmojiCodeController.Listener {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>(),
+        VerificationEmojiCodeController.Listener {
 
     private val viewModel by fragmentViewModel(VerificationEmojiCodeViewModel::class)
 
     private val sharedViewModel by parentFragmentViewModel(VerificationBottomSheetViewModel::class)
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -47,13 +52,13 @@ class VerificationEmojiCodeFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
         controller.listener = this
     }
 

vector/src/main/java/im/vector/app/features/crypto/verification/qrconfirmation/VerificationQRWaitingFragment.kt

@@ -18,19 +18,20 @@ package im.vector.app.features.crypto.verification.qrconfirmation
 
 import android.os.Bundle
 import android.os.Parcelable
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.MvRx
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
+import kotlinx.parcelize.Parcelize
 import javax.inject.Inject
 
 class VerificationQRWaitingFragment @Inject constructor(
         val controller: VerificationQRWaitingController
-) : VectorBaseFragment() {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>() {
 
     @Parcelize
     data class Args(
@@ -38,7 +39,9 @@ class VerificationQRWaitingFragment @Inject constructor(
             val otherUserName: String
     ) : Parcelable
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -49,11 +52,11 @@ class VerificationQRWaitingFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
     }
 }

vector/src/main/java/im/vector/app/features/crypto/verification/qrconfirmation/VerificationQrScannedByOtherFragment.kt

@@ -16,25 +16,30 @@
 package im.vector.app.features.crypto.verification.qrconfirmation
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
 import im.vector.app.features.crypto.verification.VerificationAction
 import im.vector.app.features.crypto.verification.VerificationBottomSheetViewModel
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+
 import javax.inject.Inject
 
 class VerificationQrScannedByOtherFragment @Inject constructor(
         val controller: VerificationQrScannedByOtherController
-) : VectorBaseFragment(), VerificationQrScannedByOtherController.Listener {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>(),
+        VerificationQrScannedByOtherController.Listener {
 
     private val sharedViewModel by parentFragmentViewModel(VerificationBottomSheetViewModel::class)
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -46,13 +51,13 @@ class VerificationQrScannedByOtherFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
         controller.listener = this
     }
 

vector/src/main/java/im/vector/app/features/crypto/verification/request/VerificationRequestFragment.kt

@@ -16,25 +16,30 @@
 package im.vector.app.features.crypto.verification.request
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.parentFragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.BottomSheetVerificationChildFragmentBinding
 import im.vector.app.features.crypto.verification.VerificationAction
 import im.vector.app.features.crypto.verification.VerificationBottomSheetViewModel
-import kotlinx.android.synthetic.main.bottom_sheet_verification_child_fragment.*
+
 import javax.inject.Inject
 
 class VerificationRequestFragment @Inject constructor(
         val controller: VerificationRequestController
-) : VectorBaseFragment(), VerificationRequestController.Listener {
+) : VectorBaseFragment<BottomSheetVerificationChildFragmentBinding>(),
+        VerificationRequestController.Listener {
 
     private val viewModel by parentFragmentViewModel(VerificationBottomSheetViewModel::class)
 
-    override fun getLayoutResId() = R.layout.bottom_sheet_verification_child_fragment
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): BottomSheetVerificationChildFragmentBinding {
+        return BottomSheetVerificationChildFragmentBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
@@ -42,13 +47,13 @@ class VerificationRequestFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        bottomSheetVerificationRecyclerView.cleanup()
+        views.bottomSheetVerificationRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
 
     private fun setupRecyclerView() {
-        bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
+        views.bottomSheetVerificationRecyclerView.configureWith(controller, hasFixedSize = false, disableItemAnimation = true)
         controller.listener = this
     }
 

vector/src/main/java/im/vector/app/features/discovery/DiscoverySettingsFragment.kt

@@ -17,8 +17,11 @@ package im.vector.app.features.discovery
 
 import android.app.Activity
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.app.AppCompatActivity
 import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
 import im.vector.app.R
@@ -27,12 +30,12 @@ import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.extensions.observeEvent
 import im.vector.app.core.extensions.registerStartForActivityResult
-import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.utils.ensureProtocol
+import im.vector.app.databinding.FragmentGenericRecyclerBinding
 import im.vector.app.features.discovery.change.SetIdentityServerFragment
 import im.vector.app.features.settings.VectorSettingsActivity
-import kotlinx.android.synthetic.main.fragment_generic_recycler.*
+
 import org.matrix.android.sdk.api.session.identity.SharedState
 import org.matrix.android.sdk.api.session.identity.ThreePid
 import org.matrix.android.sdk.api.session.terms.TermsService
@@ -41,9 +44,12 @@ import javax.inject.Inject
 class DiscoverySettingsFragment @Inject constructor(
         private val controller: DiscoverySettingsController,
         val viewModelFactory: DiscoverySettingsViewModel.Factory
-) : VectorBaseFragment(), DiscoverySettingsController.Listener {
+) : VectorBaseFragment<FragmentGenericRecyclerBinding>(),
+        DiscoverySettingsController.Listener {
 
-    override fun getLayoutResId() = R.layout.fragment_generic_recycler
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentGenericRecyclerBinding {
+        return FragmentGenericRecyclerBinding.inflate(inflater, container, false)
+    }
 
     private val viewModel by fragmentViewModel(DiscoverySettingsViewModel::class)
 
@@ -55,7 +61,7 @@ class DiscoverySettingsFragment @Inject constructor(
         sharedViewModel = activityViewModelProvider.get(DiscoverySharedViewModel::class.java)
 
         controller.listener = this
-        genericRecyclerView.configureWith(controller)
+        views.genericRecyclerView.configureWith(controller)
 
         sharedViewModel.navigateEvent.observeEvent(this) {
             when (it) {
@@ -74,7 +80,7 @@ class DiscoverySettingsFragment @Inject constructor(
     }
 
     override fun onDestroyView() {
-        genericRecyclerView.cleanup()
+        views.genericRecyclerView.cleanup()
         controller.listener = null
         super.onDestroyView()
     }
@@ -85,7 +91,7 @@ class DiscoverySettingsFragment @Inject constructor(
 
     override fun onResume() {
         super.onResume()
-        (activity as? VectorBaseActivity)?.supportActionBar?.setTitle(R.string.settings_discovery_category)
+        (activity as? AppCompatActivity)?.supportActionBar?.setTitle(R.string.settings_discovery_category)
 
         // If some 3pids are pending, we can try to check if they have been verified here
         viewModel.handle(DiscoverySettingsAction.Refresh)

vector/src/main/java/im/vector/app/features/discovery/change/SetIdentityServerFragment.kt

@@ -17,9 +17,12 @@ package im.vector.app.features.discovery.change
 
 import android.app.Activity
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import androidx.appcompat.app.AlertDialog
+import androidx.appcompat.app.AppCompatActivity
 import androidx.core.text.toSpannable
 import androidx.core.view.isVisible
 import com.airbnb.mvrx.fragmentViewModel
@@ -29,21 +32,23 @@ import im.vector.app.R
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.extensions.registerStartForActivityResult
 import im.vector.app.core.extensions.toReducedUrl
-import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.resources.ColorProvider
 import im.vector.app.core.utils.colorizeMatchingText
+import im.vector.app.databinding.FragmentSetIdentityServerBinding
 import im.vector.app.features.discovery.DiscoverySharedViewModel
-import kotlinx.android.synthetic.main.fragment_set_identity_server.*
+
 import org.matrix.android.sdk.api.session.terms.TermsService
 import javax.inject.Inject
 
 class SetIdentityServerFragment @Inject constructor(
         val viewModelFactory: SetIdentityServerViewModel.Factory,
         val colorProvider: ColorProvider
-) : VectorBaseFragment() {
+) : VectorBaseFragment<FragmentSetIdentityServerBinding>() {
 
-    override fun getLayoutResId() = R.layout.fragment_set_identity_server
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentSetIdentityServerBinding {
+        return FragmentSetIdentityServerBinding.inflate(inflater, container, false)
+    }
 
     private val viewModel by fragmentViewModel(SetIdentityServerViewModel::class)
 
@@ -52,11 +57,11 @@ class SetIdentityServerFragment @Inject constructor(
     override fun invalidate() = withState(viewModel) { state ->
         if (state.defaultIdentityServerUrl.isNullOrEmpty()) {
             // No default
-            identityServerSetDefaultNotice.isVisible = false
-            identityServerSetDefaultSubmit.isVisible = false
-            identityServerSetDefaultAlternative.setText(R.string.identity_server_set_alternative_notice_no_default)
+            views.identityServerSetDefaultNotice.isVisible = false
+            views.identityServerSetDefaultSubmit.isVisible = false
+            views.identityServerSetDefaultAlternative.setText(R.string.identity_server_set_alternative_notice_no_default)
         } else {
-            identityServerSetDefaultNotice.text = getString(
+            views.identityServerSetDefaultNotice.text = getString(
                     R.string.identity_server_set_default_notice,
                     state.homeServerUrl.toReducedUrl(),
                     state.defaultIdentityServerUrl.toReducedUrl()
@@ -65,10 +70,10 @@ class SetIdentityServerFragment @Inject constructor(
                     .colorizeMatchingText(state.defaultIdentityServerUrl.toReducedUrl(),
                             colorProvider.getColorFromAttribute(R.attr.riotx_text_primary_body_contrast))
 
-            identityServerSetDefaultNotice.isVisible = true
-            identityServerSetDefaultSubmit.isVisible = true
-            identityServerSetDefaultSubmit.text = getString(R.string.identity_server_set_default_submit, state.defaultIdentityServerUrl.toReducedUrl())
-            identityServerSetDefaultAlternative.setText(R.string.identity_server_set_alternative_notice)
+            views.identityServerSetDefaultNotice.isVisible = true
+            views.identityServerSetDefaultSubmit.isVisible = true
+            views.identityServerSetDefaultSubmit.text = getString(R.string.identity_server_set_default_submit, state.defaultIdentityServerUrl.toReducedUrl())
+            views.identityServerSetDefaultAlternative.setText(R.string.identity_server_set_alternative_notice)
         }
     }
 
@@ -77,28 +82,28 @@ class SetIdentityServerFragment @Inject constructor(
 
         sharedViewModel = activityViewModelProvider.get(DiscoverySharedViewModel::class.java)
 
-        identityServerSetDefaultAlternativeTextInput.setOnEditorActionListener { _, actionId, _ ->
+        views.identityServerSetDefaultAlternativeTextInput.setOnEditorActionListener { _, actionId, _ ->
             if (actionId == EditorInfo.IME_ACTION_DONE) {
-                viewModel.handle(SetIdentityServerAction.UseCustomIdentityServer(identityServerSetDefaultAlternativeTextInput.text.toString()))
+                viewModel.handle(SetIdentityServerAction.UseCustomIdentityServer(views.identityServerSetDefaultAlternativeTextInput.text.toString()))
                 return@setOnEditorActionListener true
             }
             return@setOnEditorActionListener false
         }
 
-        identityServerSetDefaultAlternativeTextInput
+        views.identityServerSetDefaultAlternativeTextInput
                 .textChanges()
                 .subscribe {
-                    identityServerSetDefaultAlternativeTil.error = null
-                    identityServerSetDefaultAlternativeSubmit.isEnabled = it.isNotEmpty()
+                    views.identityServerSetDefaultAlternativeTil.error = null
+                    views.identityServerSetDefaultAlternativeSubmit.isEnabled = it.isNotEmpty()
                 }
                 .disposeOnDestroyView()
 
-        identityServerSetDefaultSubmit.debouncedClicks {
+        views.identityServerSetDefaultSubmit.debouncedClicks {
             viewModel.handle(SetIdentityServerAction.UseDefaultIdentityServer)
         }
 
-        identityServerSetDefaultAlternativeSubmit.debouncedClicks {
-            viewModel.handle(SetIdentityServerAction.UseCustomIdentityServer(identityServerSetDefaultAlternativeTextInput.text.toString()))
+        views.identityServerSetDefaultAlternativeSubmit.debouncedClicks {
+            viewModel.handle(SetIdentityServerAction.UseCustomIdentityServer(views.identityServerSetDefaultAlternativeTextInput.text.toString()))
         }
 
         viewModel.observeViewEvents {
@@ -141,13 +146,13 @@ class SetIdentityServerFragment @Inject constructor(
                     .show()
         } else {
             // Display the error inlined
-            identityServerSetDefaultAlternativeTil.error = message
+            views.identityServerSetDefaultAlternativeTil.error = message
         }
     }
 
     override fun onResume() {
         super.onResume()
-        (activity as? VectorBaseActivity)?.supportActionBar?.setTitle(R.string.identity_server)
+        (activity as? AppCompatActivity)?.supportActionBar?.setTitle(R.string.identity_server)
     }
 
     private val termsActivityResultLauncher = registerStartForActivityResult {

vector/src/main/java/im/vector/app/features/grouplist/GroupListFragment.kt

@@ -18,39 +18,44 @@
 package im.vector.app.features.grouplist
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import com.airbnb.mvrx.Incomplete
 import com.airbnb.mvrx.Success
 import com.airbnb.mvrx.fragmentViewModel
 import com.airbnb.mvrx.withState
-import im.vector.app.R
 import im.vector.app.core.extensions.cleanup
 import im.vector.app.core.extensions.configureWith
 import im.vector.app.core.extensions.exhaustive
 import im.vector.app.core.platform.StateView
 import im.vector.app.core.platform.VectorBaseFragment
+import im.vector.app.databinding.FragmentGroupListBinding
 import im.vector.app.features.home.HomeActivitySharedAction
 import im.vector.app.features.home.HomeSharedActionViewModel
-import kotlinx.android.synthetic.main.fragment_group_list.*
+
 import org.matrix.android.sdk.api.session.group.model.GroupSummary
 import javax.inject.Inject
 
 class GroupListFragment @Inject constructor(
         val groupListViewModelFactory: GroupListViewModel.Factory,
         private val groupController: GroupSummaryController
-) : VectorBaseFragment(), GroupSummaryController.Callback {
+) : VectorBaseFragment<FragmentGroupListBinding>(),
+        GroupSummaryController.Callback {
 
     private lateinit var sharedActionViewModel: HomeSharedActionViewModel
     private val viewModel: GroupListViewModel by fragmentViewModel()
 
-    override fun getLayoutResId() = R.layout.fragment_group_list
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentGroupListBinding {
+        return FragmentGroupListBinding.inflate(inflater, container, false)
+    }
 
     override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
         super.onViewCreated(view, savedInstanceState)
         sharedActionViewModel = activityViewModelProvider.get(HomeSharedActionViewModel::class.java)
         groupController.callback = this
-        stateView.contentView = groupListView
-        groupListView.configureWith(groupController)
+        views.stateView.contentView = views.groupListView
+        views.groupListView.configureWith(groupController)
         viewModel.observeViewEvents {
             when (it) {
                 is GroupListViewEvents.OpenGroupSummary -> sharedActionViewModel.post(HomeActivitySharedAction.OpenGroup)
@@ -60,14 +65,14 @@ class GroupListFragment @Inject constructor(
 
     override fun onDestroyView() {
         groupController.callback = null
-        groupListView.cleanup()
+        views.groupListView.cleanup()
         super.onDestroyView()
     }
 
     override fun invalidate() = withState(viewModel) { state ->
         when (state.asyncGroups) {
-            is Incomplete -> stateView.state = StateView.State.Loading
-            is Success    -> stateView.state = StateView.State.Content
+            is Incomplete -> views.stateView.state = StateView.State.Loading
+            is Success    -> views.stateView.state = StateView.State.Content
         }
         groupController.update(state)
     }

vector/src/main/java/im/vector/app/features/home/HomeActivity.kt

@@ -40,6 +40,7 @@ import im.vector.app.core.platform.ToolbarConfigurable
 import im.vector.app.core.platform.VectorBaseActivity
 import im.vector.app.core.pushers.PushersManager
 import im.vector.app.core.utils.toast
+import im.vector.app.databinding.ActivityHomeBinding
 import im.vector.app.features.disclaimer.showDisclaimerDialog
 import im.vector.app.features.matrixto.MatrixToBottomSheet
 import im.vector.app.features.notifications.NotificationDrawerManager
@@ -56,9 +57,7 @@ import im.vector.app.features.workers.signout.ServerBackupStatusViewModel
 import im.vector.app.features.workers.signout.ServerBackupStatusViewState
 import im.vector.app.push.fcm.FcmHelper
 import io.reactivex.android.schedulers.AndroidSchedulers
-import kotlinx.android.parcel.Parcelize
-import kotlinx.android.synthetic.main.activity_home.*
-import kotlinx.android.synthetic.main.merge_overlay_waiting_view.*
+import kotlinx.parcelize.Parcelize
 import org.matrix.android.sdk.api.session.InitialSyncProgressService
 import org.matrix.android.sdk.api.session.permalinks.PermalinkService
 import org.matrix.android.sdk.api.util.MatrixItem
@@ -71,7 +70,11 @@ data class HomeActivityArgs(
         val accountCreation: Boolean
 ) : Parcelable
 
-class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDetectorSharedViewModel.Factory, ServerBackupStatusViewModel.Factory,
+class HomeActivity :
+        VectorBaseActivity<ActivityHomeBinding>(),
+        ToolbarConfigurable,
+        UnknownDeviceDetectorSharedViewModel.Factory,
+        ServerBackupStatusViewModel.Factory,
         NavigationInterceptor {
 
     private lateinit var sharedActionViewModel: HomeSharedActionViewModel
@@ -98,7 +101,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
         }
     }
 
-    override fun getLayoutRes() = R.layout.activity_home
+    override fun getBinding() = ActivityHomeBinding.inflate(layoutInflater)
 
     override fun injectWith(injector: ScreenComponent) {
         injector.inject(this)
@@ -116,7 +119,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
         super.onCreate(savedInstanceState)
         FcmHelper.ensureFcmTokenIsRetrieved(this, pushManager, vectorPreferences.areNotificationEnabledForDevice())
         sharedActionViewModel = viewModelProvider.get(HomeSharedActionViewModel::class.java)
-        drawerLayout.addDrawerListener(drawerListener)
+        views.drawerLayout.addDrawerListener(drawerListener)
         if (isFirstCreation()) {
             replaceFragment(R.id.homeDetailFragmentContainer, LoadingFragment::class.java)
             replaceFragment(R.id.homeDrawerFragmentContainer, HomeDrawerFragment::class.java)
@@ -126,10 +129,10 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
                 .observe()
                 .subscribe { sharedAction ->
                     when (sharedAction) {
-                        is HomeActivitySharedAction.OpenDrawer  -> drawerLayout.openDrawer(GravityCompat.START)
-                        is HomeActivitySharedAction.CloseDrawer -> drawerLayout.closeDrawer(GravityCompat.START)
+                        is HomeActivitySharedAction.OpenDrawer  -> views.drawerLayout.openDrawer(GravityCompat.START)
+                        is HomeActivitySharedAction.CloseDrawer -> views.drawerLayout.closeDrawer(GravityCompat.START)
                         is HomeActivitySharedAction.OpenGroup   -> {
-                            drawerLayout.closeDrawer(GravityCompat.START)
+                            views.drawerLayout.closeDrawer(GravityCompat.START)
                             replaceFragment(R.id.homeDetailFragmentContainer, HomeDetailFragment::class.java, allowStateLoss = true)
                         }
                     }.exhaustive
@@ -197,24 +200,24 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
     private fun renderState(state: HomeActivityViewState) {
         when (val status = state.initialSyncProgressServiceStatus) {
             is InitialSyncProgressService.Status.Idle        -> {
-                waiting_view.isVisible = false
+                views.waitingView.root.isVisible = false
             }
             is InitialSyncProgressService.Status.Progressing -> {
                 Timber.v("${getString(status.statusText)} ${status.percentProgress}")
-                waiting_view.setOnClickListener {
+                views.waitingView.root.setOnClickListener {
                     // block interactions
                 }
-                waiting_view_status_horizontal_progress.apply {
+                views.waitingView.waitingHorizontalProgress.apply {
                     isIndeterminate = false
                     max = 100
                     progress = status.percentProgress
                     isVisible = true
                 }
-                waiting_view_status_text.apply {
+                views.waitingView.waitingStatusText.apply {
                     text = getString(status.statusText)
                     isVisible = true
                 }
-                waiting_view.isVisible = true
+                views.waitingView.root.isVisible = true
             }
         }.exhaustive
     }
@@ -269,7 +272,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
                 ).apply {
                     colorInt = ThemeUtils.getColor(this@HomeActivity, R.attr.vctr_notice_secondary)
                     contentAction = Runnable {
-                        (weakCurrentActivity?.get() as? VectorBaseActivity)?.let {
+                        (weakCurrentActivity?.get() as? VectorBaseActivity<*>)?.let {
                             // action(it)
                             homeActivityViewModel.handle(HomeActivityViewActions.PushPromptHasBeenReviewed)
                             it.navigator.openSettings(it, VectorSettingsActivity.EXTRA_DIRECT_ACCESS_NOTIFICATIONS)
@@ -282,7 +285,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
                         homeActivityViewModel.handle(HomeActivityViewActions.PushPromptHasBeenReviewed)
                     }, true)
                     addButton(getString(R.string.settings), Runnable {
-                        (weakCurrentActivity?.get() as? VectorBaseActivity)?.let {
+                        (weakCurrentActivity?.get() as? VectorBaseActivity<*>)?.let {
                             // action(it)
                             homeActivityViewModel.handle(HomeActivityViewActions.PushPromptHasBeenReviewed)
                             it.navigator.openSettings(it, VectorSettingsActivity.EXTRA_DIRECT_ACCESS_NOTIFICATIONS)
@@ -292,7 +295,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
         )
     }
 
-    private fun promptSecurityEvent(userItem: MatrixItem.UserItem?, titleRes: Int, descRes: Int, action: ((VectorBaseActivity) -> Unit)) {
+    private fun promptSecurityEvent(userItem: MatrixItem.UserItem?, titleRes: Int, descRes: Int, action: ((VectorBaseActivity<*>) -> Unit)) {
         popupAlertManager.postVectorAlert(
                 VerificationVectorAlert(
                         uid = "upgradeSecurity",
@@ -303,7 +306,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
                 ).apply {
                     colorInt = ContextCompat.getColor(this@HomeActivity, R.color.riotx_positive_accent)
                     contentAction = Runnable {
-                        (weakCurrentActivity?.get() as? VectorBaseActivity)?.let {
+                        (weakCurrentActivity?.get() as? VectorBaseActivity<*>)?.let {
                             action(it)
                         }
                     }
@@ -321,7 +324,7 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
     }
 
     override fun onDestroy() {
-        drawerLayout.removeDrawerListener(drawerListener)
+        views.drawerLayout.removeDrawerListener(drawerListener)
         super.onDestroy()
     }
 
@@ -375,8 +378,8 @@ class HomeActivity : VectorBaseActivity(), ToolbarConfigurable, UnknownDeviceDet
     }
 
     override fun onBackPressed() {
-        if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
-            drawerLayout.closeDrawer(GravityCompat.START)
+        if (views.drawerLayout.isDrawerOpen(GravityCompat.START)) {
+            views.drawerLayout.closeDrawer(GravityCompat.START)
         } else {
             super.onBackPressed()
         }

vector/src/main/java/im/vector/app/features/home/HomeDetailFragment.kt

@@ -17,7 +17,9 @@
 package im.vector.app.features.home
 
 import android.os.Bundle
+import android.view.LayoutInflater
 import android.view.View
+import android.view.ViewGroup
 import androidx.core.content.ContextCompat
 import androidx.lifecycle.Observer
 import com.airbnb.mvrx.activityViewModel
@@ -26,6 +28,7 @@ import com.airbnb.mvrx.withState
 import com.google.android.material.badge.BadgeDrawable
 import im.vector.app.R
 import im.vector.app.core.extensions.commitTransaction
+import im.vector.app.core.extensions.toMvRxBundle
 import im.vector.app.core.glide.GlideApp
 import im.vector.app.core.platform.ToolbarConfigurable
 import im.vector.app.core.platform.VectorBaseActivity
@@ -33,6 +36,7 @@ import im.vector.app.core.platform.VectorBaseFragment
 import im.vector.app.core.ui.views.ActiveCallView
 import im.vector.app.core.ui.views.ActiveCallViewHolder
 import im.vector.app.core.ui.views.KeysBackupBanner
+import im.vector.app.databinding.FragmentHomeDetailBinding
 import im.vector.app.features.call.SharedActiveCallViewModel
 import im.vector.app.features.call.VectorCallActivity
 import im.vector.app.features.call.WebRtcPeerConnectionManager
@@ -46,7 +50,7 @@ import im.vector.app.features.themes.ThemeUtils
 import im.vector.app.features.workers.signout.BannerState
 import im.vector.app.features.workers.signout.ServerBackupStatusViewModel
 import im.vector.app.features.workers.signout.ServerBackupStatusViewState
-import kotlinx.android.synthetic.main.fragment_home_detail.*
+
 import org.matrix.android.sdk.api.session.group.model.GroupSummary
 import org.matrix.android.sdk.api.util.toMatrixItem
 import org.matrix.android.sdk.internal.crypto.model.rest.DeviceInfo
@@ -64,7 +68,10 @@ class HomeDetailFragment @Inject constructor(
         private val alertManager: PopupAlertManager,
         private val webRtcPeerConnectionManager: WebRtcPeerConnectionManager,
         private val vectorPreferences: VectorPreferences
-) : VectorBaseFragment(), KeysBackupBanner.Delegate, ActiveCallView.Callback, ServerBackupStatusViewModel.Factory {
+) : VectorBaseFragment<FragmentHomeDetailBinding>(),
+        KeysBackupBanner.Delegate,
+        ActiveCallView.Callback,
+        ServerBackupStatusViewModel.Factory {
 
     private val viewModel: HomeDetailViewModel by fragmentViewModel()
     private val unknownDeviceDetectorSharedViewModel: UnknownDeviceDetectorSharedViewModel by activityViewModel()
@@ -73,7 +80,9 @@ class HomeDetailFragment @Inject constructor(
     private lateinit var sharedActionViewModel: HomeSharedActionViewModel
     private lateinit var sharedCallActionViewModel: SharedActiveCallViewModel
 
-    override fun getLayoutResId() = R.layout.fragment_home_detail
+    override fun getBinding(inflater: LayoutInflater, container: ViewGroup?): FragmentHomeDetailBinding {
+        return FragmentHomeDetailBinding.inflate(inflater, container, false)
+    }
 
     private val activeCallViewHolder = ActiveCallViewHolder()
 
@@ -89,7 +98,7 @@ class HomeDetailFragment @Inject constructor(
 
         withState(viewModel) {
             // Update the navigation view if needed (for when we restore the tabs)
-            bottomNavigationView.selectedItemId = it.displayMode.toMenuId()
+            views.bottomNavigationView.selectedItemId = it.displayMode.toMenuId()
         }
 
         viewModel.selectSubscribe(this, HomeDetailViewState::groupSummary) { groupSummary ->
@@ -132,8 +141,8 @@ class HomeDetailFragment @Inject constructor(
     }
 
     private fun checkNotificationTabStatus() {
-        val wasVisible = bottomNavigationView.menu.findItem(R.id.bottom_action_notification).isVisible
-        bottomNavigationView.menu.findItem(R.id.bottom_action_notification).isVisible = vectorPreferences.labAddNotificationTab()
+        val wasVisible = views.bottomNavigationView.menu.findItem(R.id.bottom_action_notification).isVisible
+        views.bottomNavigationView.menu.findItem(R.id.bottom_action_notification).isVisible = vectorPreferences.labAddNotificationTab()
         if (wasVisible && !vectorPreferences.labAddNotificationTab()) {
             // As we hide it check if it's not the current item!
             withState(viewModel) {
@@ -156,7 +165,7 @@ class HomeDetailFragment @Inject constructor(
                 ).apply {
                     colorInt = ContextCompat.getColor(requireActivity(), R.color.riotx_accent)
                     contentAction = Runnable {
-                        (weakCurrentActivity?.get() as? VectorBaseActivity)
+                        (weakCurrentActivity?.get() as? VectorBaseActivity<*>)
                                 ?.navigator
                                 ?.requestSessionVerification(requireContext(), newest.deviceId ?: "")
                         unknownDeviceDetectorSharedViewModel.handle(
@@ -184,7 +193,7 @@ class HomeDetailFragment @Inject constructor(
                 ).apply {
                     colorInt = ContextCompat.getColor(requireActivity(), R.color.riotx_accent)
                     contentAction = Runnable {
-                        (weakCurrentActivity?.get() as? VectorBaseActivity)?.let {
+                        (weakCurrentActivity?.get() as? VectorBaseActivity<*>)?.let {
                             // mark as ignored to avoid showing it again
                             unknownDeviceDetectorSharedViewModel.handle(
                                     UnknownDeviceDetectorSharedViewModel.Action.IgnoreDevice(oldUnverified.mapNotNull { it.deviceId })
@@ -204,7 +213,7 @@ class HomeDetailFragment @Inject constructor(
     private fun onGroupChange(groupSummary: GroupSummary?) {
         groupSummary?.let {
             // Use GlideApp with activity context to avoid the glideRequests to be paused
-            avatarRenderer.render(it.toMatrixItem(), groupToolbarAvatarImageView, GlideApp.with(requireActivity()))
+            avatarRenderer.render(it.toMatrixItem(), views.groupToolbarAvatarImageView, GlideApp.with(requireActivity()))
         }
     }
 
@@ -212,20 +221,20 @@ class HomeDetailFragment @Inject constructor(
         serverBackupStatusViewModel
                 .subscribe(this) {
                     when (val banState = it.bannerState.invoke()) {
-                        is BannerState.Setup  -> homeKeysBackupBanner.render(KeysBackupBanner.State.Setup(banState.numberOfKeys), false)
-                        BannerState.BackingUp -> homeKeysBackupBanner.render(KeysBackupBanner.State.BackingUp, false)
+                        is BannerState.Setup  -> views.homeKeysBackupBanner.render(KeysBackupBanner.State.Setup(banState.numberOfKeys), false)
+                        BannerState.BackingUp -> views.homeKeysBackupBanner.render(KeysBackupBanner.State.BackingUp, false)
                         null,
-                        BannerState.Hidden    -> homeKeysBackupBanner.render(KeysBackupBanner.State.Hidden, false)
+                        BannerState.Hidden    -> views.homeKeysBackupBanner.render(KeysBackupBanner.State.Hidden, false)
                     }
                 }
-        homeKeysBackupBanner.delegate = this
+        views.homeKeysBackupBanner.delegate = this
     }
 
     private fun setupActiveCallView() {
         activeCallViewHolder.bind(
-                activeCallPiP,
-                activeCallView,
-                activeCallPiPWrap,
+                views.activeCallPiP,
+                views.activeCallView,
+                views.activeCallPiPWrap,
                 this
         )
     }
@@ -233,17 +242,17 @@ class HomeDetailFragment @Inject constructor(
     private fun setupToolbar() {
         val parentActivity = vectorBaseActivity
         if (parentActivity is ToolbarConfigurable) {
-            parentActivity.configure(groupToolbar)
+            parentActivity.configure(views.groupToolbar)
         }
-        groupToolbar.title = ""
-        groupToolbarAvatarImageView.debouncedClicks {
+        views.groupToolbar.title = ""
+        views.groupToolbarAvatarImageView.debouncedClicks {
             sharedActionViewModel.post(HomeActivitySharedAction.OpenDrawer)
         }
     }
 
     private fun setupBottomNavigationView() {
-        bottomNavigationView.menu.findItem(R.id.bottom_action_notification).isVisible = vectorPreferences.labAddNotificationTab()
-        bottomNavigationView.setOnNavigationItemSelectedListener {
+        views.bottomNavigationView.menu.findItem(R.id.bottom_action_notification).isVisible = vectorPreferences.labAddNotificationTab()
+        views.bottomNavigationView.setOnNavigationItemSelectedListener {
             val displayMode = when (it.itemId) {
                 R.id.bottom_action_people -> RoomListDisplayMode.PEOPLE
                 R.id.bottom_action_rooms  -> RoomListDisplayMode.ROOMS
@@ -266,7 +275,7 @@ class HomeDetailFragment @Inject constructor(
     }
 
     private fun switchDisplayMode(displayMode: RoomListDisplayMode) {
-        groupToolbarTitleView.setText(displayMode.titleRes)
+        views.groupToolbarTitleView.setText(displayMode.titleRes)
         updateSelectedFragment(displayMode)
     }
 
@@ -302,10 +311,10 @@ class HomeDetailFragment @Inject constructor(
 
     override fun invalidate() = withState(viewModel) {
         Timber.v(it.toString())
-        bottomNavigationView.getOrCreateBadge(R.id.bottom_action_people).render(it.notificationCountPeople, it.notificationHighlightPeople)
-        bottomNavigationView.getOrCreateBadge(R.id.bottom_action_rooms).render(it.notificationCountRooms, it.notificationHighlightRooms)
-        bottomNavigationView.getOrCreateBadge(R.id.bottom_action_notification).render(it.notificationCountCatchup, it.notificationHighlightCatchup)
-        syncStateView.render(it.syncState)
+        views.bottomNavigationView.getOrCreateBadge(R.id.bottom_action_people).render(it.notificationCountPeople, it.notificationHighlightPeople)
+        views.bottomNavigationView.getOrCreateBadge(R.id.bottom_action_rooms).render(it.notificationCountRooms, it.notificationHighlightRooms)
+        views.bottomNavigationView.getOrCreateBadge(R.id.bottom_action_notification).render(it.notificationCountCatchup, it.notificationHighlightCatchup)
+        views.syncStateView.render(it.syncState)
     }
 
     private fun BadgeDrawable.render(count: Int, highlight: Boolean) {