[webview_flutter] Remove fallback Activity and watch uiMode (flutter#3849)

Author: Emmanuel Garcia

packages/webview_flutter/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.0.5
+
+* Example app observes `uiMode`, so the WebView isn't reattached when the UI mode changes. (e.g. switching to Dark mode).
+
 ## 2.0.4
 
 * Fix a bug where `allowsInlineMediaPlayback` is not respected on iOS.

packages/webview_flutter/example/android/app/src/main/AndroidManifest.xml

@@ -14,11 +14,10 @@
         android:name="flutterEmbedding"
         android:value="2" />
     <activity
-      android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
-      android:exported="true"
+      android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
       android:hardwareAccelerated="true"
       android:launchMode="singleTop"
-      android:name=".EmbeddingV1Activity"
+      android:name="io.flutter.embedding.android.FlutterActivity"
       android:theme="@style/LaunchTheme"
       android:windowSoftInputMode="adjustResize">
       <!-- This keeps the window background of the activity showing
@@ -28,14 +27,6 @@
       <meta-data
         android:name="io.flutter.app.android.SplashScreenUntilFirstFrame"
         android:value="true"/>
-    </activity>
-    <activity
-      android:configChanges="orientation|keyboardHidden|keyboard|screenSize|locale|layoutDirection|fontScale|screenLayout|density"
-      android:hardwareAccelerated="true"
-      android:launchMode="singleTop"
-      android:name="io.flutter.embedding.android.FlutterActivity"
-      android:theme="@style/LaunchTheme"
-      android:windowSoftInputMode="adjustResize">
       <intent-filter>
         <action android:name="android.intent.action.MAIN"/>
         <category android:name="android.intent.category.LAUNCHER"/>

packages/webview_flutter/example/android/app/src/main/java/io/flutter/plugins/webviewflutterexample/EmbeddingV1Activity.java

@@ -1,7 +1,7 @@
 name: webview_flutter
 description: A Flutter plugin that provides a WebView widget on Android and iOS.
 homepage: https://github.com/flutter/plugins/tree/master/packages/webview_flutter
-version: 2.0.4
+version: 2.0.5
 
 environment:
   sdk: ">=2.12.0 <3.0.0"