Update deprecated onBackPressed, support predictive back gesture (#2959)

- Update onBackPressed functions which have been deprecated to use the new OnBackPressedDispatcher and OnBackPressedCallback
 - Indicate support for the predictive back gesture

app/src/full/java/io/homeassistant/companion/android/settings/wear/views/SettingsWearMainView.kt

@@ -52,9 +52,8 @@ class SettingsWearMainView : AppCompatActivity() {
             LoadSettingsHomeView(
                 settingsWearViewModel,
                 currentNodes.firstOrNull()?.displayName ?: "unknown",
-                this::loginWearOs,
-                this::onBackPressed
-            )
+                this::loginWearOs
+            ) { onBackPressedDispatcher.onBackPressed() }
         }
 
         if (registerUrl != null) {

app/src/main/AndroidManifest.xml

@@ -65,6 +65,7 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.HomeAssistant"
         android:networkSecurityConfig="@xml/network_security_config"
+        android:enableOnBackInvokedCallback="true"
         tools:ignore="GoogleAppIndexingWarning">
 
         <!-- Start things like SensorWorker on device boot -->

app/src/main/java/io/homeassistant/companion/android/onboarding/OnboardingActivity.kt

@@ -3,6 +3,7 @@ package io.homeassistant.companion.android.onboarding
 import android.os.Build
 import android.os.Bundle
 import android.view.KeyEvent
+import androidx.activity.OnBackPressedCallback
 import androidx.activity.viewModels
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.app.NotificationManagerCompat
@@ -68,13 +69,15 @@ class OnboardingActivity : AppCompatActivity() {
                 }
             }
         }
-    }
 
-    override fun onBackPressed() {
-        if (supportFragmentManager.backStackEntryCount > 0) {
-            supportFragmentManager.popBackStack()
-        } else {
-            super.onBackPressed()
+        val onBackPressed = object : OnBackPressedCallback(supportFragmentManager.backStackEntryCount > 0) {
+            override fun handleOnBackPressed() {
+                supportFragmentManager.popBackStack()
+            }
+        }
+        onBackPressedDispatcher.addCallback(this, onBackPressed)
+        supportFragmentManager.addOnBackStackChangedListener {
+            onBackPressed.isEnabled = supportFragmentManager.backStackEntryCount > 0
         }
     }
 

app/src/main/java/io/homeassistant/companion/android/settings/SettingsActivity.kt

@@ -80,7 +80,7 @@ class SettingsActivity : BaseActivity() {
                 if (supportFragmentManager.backStackEntryCount > 0) {
                     supportFragmentManager.popBackStack()
                 } else {
-                    onBackPressed()
+                    onBackPressedDispatcher.onBackPressed()
                 }
                 true
             }

app/src/main/java/io/homeassistant/companion/android/webview/WebViewActivity.kt

@@ -42,6 +42,7 @@ import android.webkit.WebView
 import android.widget.FrameLayout
 import android.widget.ImageView
 import android.widget.Toast
+import androidx.activity.OnBackPressedCallback
 import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AlertDialog
 import androidx.core.app.ActivityCompat
@@ -247,6 +248,14 @@ class WebViewActivity : BaseActivity(), io.homeassistant.companion.android.webvi
         decor = window.decorView as FrameLayout
 
         webView = binding.webview
+
+        val onBackPressed = object : OnBackPressedCallback(webView.canGoBack()) {
+            override fun handleOnBackPressed() {
+                if (webView.canGoBack()) webView.goBack()
+            }
+        }
+        onBackPressedDispatcher.addCallback(this, onBackPressed)
+
         webView.apply {
             // TODO This quick bar workaround only works on Home Assistant core versions <2022.7
             // If not 'fixed' or officially supported: should be removed in Android 2023.1 (GitHub: #2690)
@@ -406,6 +415,15 @@ class WebViewActivity : BaseActivity(), io.homeassistant.companion.android.webvi
                     }
                     return false
                 }
+
+                override fun doUpdateVisitedHistory(
+                    view: WebView?,
+                    url: String?,
+                    isReload: Boolean
+                ) {
+                    super.doUpdateVisitedHistory(view, url, isReload)
+                    onBackPressed.isEnabled = canGoBack()
+                }
             }
 
             setDownloadListener { url, _, contentDisposition, mimetype, _ ->
@@ -1009,14 +1027,6 @@ class WebViewActivity : BaseActivity(), io.homeassistant.companion.android.webvi
         finish()
     }
 
-    override fun onBackPressed() {
-        if (webView.canGoBack()) {
-            webView.goBack()
-        } else {
-            super.onBackPressed()
-        }
-    }
-
     override fun loadUrl(url: String) {
         loadedUrl = url
         webView.loadUrl(url)