Refactor HiltViewModels ApplicationContext (#446)

* Simplified ViewModels

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Fixed injection

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Fixed settings injection

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Added missing import

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Fixed application

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Fixed constructors and got rid of utils

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Optimized imports

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Added missing annotation

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

---------

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

app/src/androidTest/kotlin/at/bitfire/davdroid/ui/webdav/AddWebdavMountActivityTest.kt

@@ -5,7 +5,7 @@
 package at.bitfire.davdroid.ui.webdav
 
 import android.security.NetworkSecurityPolicy
-import androidx.test.platform.app.InstrumentationRegistry
+import androidx.test.core.app.ApplicationProvider
 import at.bitfire.davdroid.db.AppDatabase
 import at.bitfire.davdroid.db.WebDavMount
 import dagger.hilt.android.testing.HiltAndroidRule
@@ -34,7 +34,7 @@ class AddWebdavMountActivityTest {
     fun setUp() {
         hiltRule.inject()
 
-        model = spyk(AddWebdavMountActivity.Model(InstrumentationRegistry.getInstrumentation().targetContext, db))
+        model = spyk(AddWebdavMountActivity.Model(ApplicationProvider.getApplicationContext(), db))
 
         Assume.assumeTrue(NetworkSecurityPolicy.getInstance().isCleartextTrafficPermitted)
     }

app/src/main/kotlin/at/bitfire/davdroid/ui/TasksFragment.kt

@@ -4,6 +4,7 @@
 
 package at.bitfire.davdroid.ui
 
+import android.app.Application
 import android.content.Context
 import android.content.Intent
 import android.content.pm.PackageManager
@@ -16,8 +17,8 @@ import androidx.annotation.AnyThread
 import androidx.databinding.ObservableBoolean
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.MutableLiveData
-import androidx.lifecycle.ViewModel
 import at.bitfire.davdroid.BuildConfig
 import at.bitfire.davdroid.PackageChangedReceiver
 import at.bitfire.davdroid.R
@@ -28,7 +29,6 @@ import at.bitfire.ical4android.TaskProvider.ProviderName
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
 import dagger.hilt.android.lifecycle.HiltViewModel
-import dagger.hilt.android.qualifiers.ApplicationContext
 import javax.inject.Inject
 
 @AndroidEntryPoint
@@ -102,9 +102,9 @@ class TasksFragment: Fragment() {
 
     @HiltViewModel
     class Model @Inject constructor(
-        @ApplicationContext val context: Context,
+        application: Application,
         val settings: SettingsManager
-    ) : ViewModel(), SettingsManager.OnChangeListener {
+    ) : AndroidViewModel(application), SettingsManager.OnChangeListener {
 
         companion object {
 
@@ -117,6 +117,8 @@ class TasksFragment: Fragment() {
 
         }
 
+        val context: Context get() = getApplication()
+
         val currentProvider = MutableLiveData<ProviderName>()
         val openTasksInstalled = MutableLiveData<Boolean>()
         val openTasksRequested = MutableLiveData<Boolean>()

app/src/main/kotlin/at/bitfire/davdroid/ui/account/CreateCollectionFragment.kt

@@ -5,7 +5,7 @@
 package at.bitfire.davdroid.ui.account
 
 import android.accounts.Account
-import android.content.Context
+import android.app.Application
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -15,20 +15,19 @@ import androidx.fragment.app.viewModels
 import androidx.lifecycle.*
 import at.bitfire.dav4jvm.DavResource
 import at.bitfire.dav4jvm.XmlUtils
-import at.bitfire.davdroid.util.DavUtils
-import at.bitfire.davdroid.network.HttpClient
 import at.bitfire.davdroid.R
 import at.bitfire.davdroid.db.AppDatabase
 import at.bitfire.davdroid.db.Collection
 import at.bitfire.davdroid.log.Logger
+import at.bitfire.davdroid.network.HttpClient
 import at.bitfire.davdroid.servicedetection.RefreshCollectionsWorker
 import at.bitfire.davdroid.settings.AccountSettings
 import at.bitfire.davdroid.ui.ExceptionInfoFragment
+import at.bitfire.davdroid.util.DavUtils
 import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
 import dagger.assisted.AssistedInject
 import dagger.hilt.android.AndroidEntryPoint
-import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.launch
@@ -117,12 +116,12 @@ class CreateCollectionFragment: DialogFragment() {
 
 
     class Model @AssistedInject constructor(
-        @ApplicationContext val context: Context,
+        application: Application,
         val db: AppDatabase,
         @Assisted val account: Account,
         @Assisted val serviceType: String,
         @Assisted val collection: Collection
-    ): ViewModel() {
+    ): AndroidViewModel(application) {
         
         @AssistedFactory
         interface Factory {
@@ -133,7 +132,7 @@ class CreateCollectionFragment: DialogFragment() {
 
         fun createCollection(): LiveData<Exception> {
             viewModelScope.launch(Dispatchers.IO + NonCancellable) {
-                HttpClient.Builder(context, AccountSettings(context, account))
+                HttpClient.Builder(getApplication(), AccountSettings(getApplication(), account))
                         .setForeground(true)
                         .build().use { httpClient ->
                     try {
@@ -148,7 +147,7 @@ class CreateCollectionFragment: DialogFragment() {
                             db.collectionDao().insert(collection)
 
                             // trigger service detection (because the collection may have other properties than the ones we have inserted)
-                            RefreshCollectionsWorker.refreshCollections(context, service.id)
+                            RefreshCollectionsWorker.refreshCollections(getApplication(), service.id)
                         }
 
                         // post success

app/src/main/kotlin/at/bitfire/davdroid/ui/account/DeleteCollectionFragment.kt

@@ -5,7 +5,7 @@
 package at.bitfire.davdroid.ui.account
 
 import android.accounts.Account
-import android.content.Context
+import android.app.Application
 import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
@@ -14,17 +14,16 @@ import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.viewModels
 import androidx.lifecycle.*
 import at.bitfire.dav4jvm.DavResource
-import at.bitfire.davdroid.network.HttpClient
 import at.bitfire.davdroid.databinding.DeleteCollectionBinding
 import at.bitfire.davdroid.db.AppDatabase
 import at.bitfire.davdroid.db.Collection
+import at.bitfire.davdroid.network.HttpClient
 import at.bitfire.davdroid.settings.AccountSettings
 import at.bitfire.davdroid.ui.ExceptionInfoFragment
 import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
 import dagger.assisted.AssistedInject
 import dagger.hilt.android.AndroidEntryPoint
-import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.launch
@@ -88,11 +87,11 @@ class DeleteCollectionFragment: DialogFragment() {
 
 
     class Model @AssistedInject constructor(
-        @ApplicationContext val context: Context,
+        application: Application,
         val db: AppDatabase,
         @Assisted var account: Account,
         @Assisted val collectionId: Long
-    ): ViewModel() {
+    ): AndroidViewModel(application) {
 
         @AssistedFactory
         interface Factory {
@@ -114,7 +113,7 @@ class DeleteCollectionFragment: DialogFragment() {
             viewModelScope.launch(Dispatchers.IO + NonCancellable) {
                 val collectionInfo = collectionInfo ?: return@launch
 
-                HttpClient.Builder(context, AccountSettings(context, account))
+                HttpClient.Builder(getApplication(), AccountSettings(getApplication(), account))
                         .setForeground(true)
                         .build().use { httpClient ->
                             try {

app/src/main/kotlin/at/bitfire/davdroid/ui/account/SettingsActivity.kt

@@ -19,6 +19,7 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.TaskStackBuilder
 import androidx.fragment.app.DialogFragment
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.MediatorLiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
@@ -425,10 +426,10 @@ class SettingsActivity: AppCompatActivity() {
 
 
     class Model @AssistedInject constructor(
-        val application: Application,
+        application: Application,
         val settings: SettingsManager,
         @Assisted val account: Account
-    ): ViewModel(), SettingsManager.OnChangeListener {
+    ): AndroidViewModel(application), SettingsManager.OnChangeListener {
 
         @AssistedFactory
         interface Factory {
@@ -487,7 +488,9 @@ class SettingsActivity: AppCompatActivity() {
         fun reload() {
             val accountSettings = accountSettings ?: return
 
-            syncIntervalContacts.postValue(accountSettings.getSyncInterval(application.getString(R.string.address_books_authority)))
+            syncIntervalContacts.postValue(
+                accountSettings.getSyncInterval(getApplication<Application>().getString(R.string.address_books_authority))
+            )
             syncIntervalCalendars.postValue(accountSettings.getSyncInterval(CalendarContract.AUTHORITY))
             syncIntervalTasks.postValue(tasksProvider?.let { accountSettings.getSyncInterval(it.authority) })
 
@@ -570,7 +573,10 @@ class SettingsActivity: AppCompatActivity() {
             accountSettings?.setGroupMethod(groupMethod)
             reload()
 
-            resync(application.getString(R.string.address_books_authority), fullResync = true)
+            resync(
+                authority = getApplication<Application>().getString(R.string.address_books_authority),
+                fullResync = true
+            )
         }
 
         /**
@@ -597,7 +603,7 @@ class SettingsActivity: AppCompatActivity() {
          */
         private fun resync(authority: String, fullResync: Boolean) {
             val resync = if (fullResync) SyncWorker.FULL_RESYNC else SyncWorker.RESYNC
-            SyncWorker.enqueue(application, account, authority, resync)
+            SyncWorker.enqueue(getApplication(), account, authority, resync)
         }
 
     }

app/src/main/kotlin/at/bitfire/davdroid/ui/account/WebcalFragment.kt

@@ -5,6 +5,7 @@
 package at.bitfire.davdroid.ui.account
 
 import android.Manifest
+import android.app.Application
 import android.content.ContentProviderClient
 import android.content.Context
 import android.content.Intent
@@ -33,7 +34,6 @@ import dagger.assisted.Assisted
 import dagger.assisted.AssistedFactory
 import dagger.assisted.AssistedInject
 import dagger.hilt.android.AndroidEntryPoint
-import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import okhttp3.HttpUrl
@@ -180,16 +180,18 @@ class WebcalFragment: CollectionsFragment() {
 
 
     class WebcalModel @AssistedInject constructor(
-        @ApplicationContext context: Context,
+        application: Application,
         val db: AppDatabase,
         @Assisted val serviceId: Long
-    ): ViewModel() {
+    ): AndroidViewModel(application) {
 
         @AssistedFactory
         interface Factory {
             fun create(serviceId: Long): WebcalModel
         }
 
+        val context: Context get() = getApplication()
+
         private val resolver = context.contentResolver
 
         private var calendarPermission = false

app/src/main/kotlin/at/bitfire/davdroid/ui/setup/AccountDetailsFragment.kt

@@ -6,6 +6,7 @@ package at.bitfire.davdroid.ui.setup
 
 import android.accounts.Account
 import android.accounts.AccountManager
+import android.app.Application
 import android.content.ContentResolver
 import android.content.Context
 import android.content.Intent
@@ -19,10 +20,10 @@ import android.widget.ArrayAdapter
 import androidx.fragment.app.Fragment
 import androidx.fragment.app.activityViewModels
 import androidx.fragment.app.viewModels
+import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.LiveData
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.Observer
-import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import at.bitfire.davdroid.InvalidAccountException
 import at.bitfire.davdroid.R
@@ -44,7 +45,6 @@ import at.bitfire.vcard4android.GroupMethod
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
 import dagger.hilt.android.lifecycle.HiltViewModel
-import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.NonCancellable
 import kotlinx.coroutines.launch
@@ -156,15 +156,17 @@ class AccountDetailsFragment : Fragment() {
 
     @HiltViewModel
     class Model @Inject constructor(
-        @ApplicationContext val context: Context,
+        application: Application,
         val db: AppDatabase,
         val settingsManager: SettingsManager
-    ) : ViewModel() {
+    ) : AndroidViewModel(application) {
 
         val name = MutableLiveData<String>()
         val nameError = MutableLiveData<String>()
         val showApostropheWarning = MutableLiveData<Boolean>(false)
 
+        val context: Context get() = getApplication()
+
         fun validateAccountName(s: Editable) {
             showApostropheWarning.value = s.toString().contains('\'')
             nameError.value = null

app/src/main/kotlin/at/bitfire/davdroid/ui/webdav/AddWebdavMountActivity.kt

@@ -4,6 +4,7 @@
 
 package at.bitfire.davdroid.ui.webdav
 
+import android.app.Application
 import android.content.Context
 import android.os.Bundle
 import android.view.Menu
@@ -14,8 +15,8 @@ import androidx.activity.viewModels
 import androidx.annotation.WorkerThread
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.MenuProvider
+import androidx.lifecycle.AndroidViewModel
 import androidx.lifecycle.MutableLiveData
-import androidx.lifecycle.ViewModel
 import androidx.lifecycle.lifecycleScope
 import at.bitfire.dav4jvm.DavResource
 import at.bitfire.dav4jvm.UrlUtils
@@ -33,7 +34,6 @@ import at.bitfire.davdroid.webdav.DavDocumentsProvider
 import com.google.android.material.snackbar.Snackbar
 import dagger.hilt.android.AndroidEntryPoint
 import dagger.hilt.android.lifecycle.HiltViewModel
-import dagger.hilt.android.qualifiers.ApplicationContext
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import okhttp3.HttpUrl
@@ -156,9 +156,9 @@ class AddWebdavMountActivity: AppCompatActivity() {
 
     @HiltViewModel
     class Model @Inject constructor(
-        @ApplicationContext val context: Context,
+        application: Application,
         val db: AppDatabase
-    ) : ViewModel() {
+    ) : AndroidViewModel(application) {
 
         val displayName = MutableLiveData<String>()
         val displayNameError = MutableLiveData<String>()
@@ -169,6 +169,8 @@ class AddWebdavMountActivity: AppCompatActivity() {
 
         val error = MutableLiveData<String>()
 
+        val context: Context get() = getApplication()
+
 
         @WorkerThread
         fun addMount(mount: WebDavMount, credentials: Credentials?): Boolean {

app/src/main/kotlin/at/bitfire/davdroid/ui/webdav/WebdavMountsActivity.kt

@@ -5,6 +5,7 @@
 package at.bitfire.davdroid.ui.webdav
 
 import android.app.AlertDialog
+import android.app.Application
 import android.content.Context
 import android.content.Intent
 import android.os.Bundle
@@ -195,9 +196,11 @@ class WebdavMountsActivity: AppCompatActivity() {
 
     @HiltViewModel
     class Model @Inject constructor(
-        @ApplicationContext val context: Context,
+        application: Application,
         val db: AppDatabase
-    ): ViewModel() {
+    ): AndroidViewModel(application) {
+
+        val context: Context get() = getApplication()
 
         val authority = context.getString(R.string.webdav_authority)