Removal of v1 Android embedding Java APIs

Android's v1 embedding has been removed in Flutter 3.29.0. This follows the deprecation described in Android v1 embedding app and plugin creation deprecation. The following is a full list of classes removed.

io.flutter.app.FlutterActivity io.flutter.app.FlutterActivityDelegate io.flutter.app.FlutterActivityEvents io.flutter.app.FlutterApplication io.flutter.app.FlutterFragmentActivity io.flutter.app.FlutterPlayStoreSplitApplication io.flutter.app.FlutterPluginRegistry  io.flutter.embedding.engine.plugins.shim.ShimPluginRegistry io.flutter.embedding.engine.plugins.shim.ShimRegistrar  io.flutter.view.FlutterMain io.flutter.view.FlutterNativeView io.flutter.view.FlutterView 

If your project references any of the above classes, consult the following list for instructions on migration.

• io.flutter.app.FlutterActivity was replaced with io.flutter.embedding.android.FlutterActivity.
• io.flutter.app.FlutterActivityDelegate was replaced with io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.
• io.flutter.app.FlutterActivityEvents was removed.
• io.flutter.app.FlutterApplication was removed. Flutter projects with custom Application implementations should instead extend the base android.app.Application.
• io.flutter.app.FlutterFragmentActivity was replaced with io.flutter.embedding.android.FlutterFragmentActivity.
• io.flutter.app.FlutterPlayStoreSplitApplication was replaced with io.flutter.embedding.android.FlutterPlayStoreSplitApplication.
• io.flutter.app.FlutterPluginRegistry was removed, as it only served to let plugins support apps using the v1 embedding.
• io.flutter.embedding.engine.plugins.shim.ShimPluginRegistry was removed, as it only served to support let plugins support apps using the v1 embedding.
• io.flutter.embedding.engine.plugins.shim.ShimRegistrar was removed, as it only served to support let plugins support apps using the v1 embedding.
• io.flutter.view.FlutterMain was replaced by io.flutter.embedding.engine.loader.FlutterLoader.
• io.flutter.view.FlutterNativeView was replaced by io.flutter.embedding.android.FlutterView.
• io.flutter.view.FlutterView was replaced by io.flutter.embedding.android.FlutterView.

Plugins should remove the registerWith method from their FlutterPlugin interface implementation:

public static void registerWith(@NonNull io.flutter.plugin.common.PluginRegistry.Registrar registrar); 

For an example of this migration, check out the pull request to remove this method from the Flutter team-owned plugins: flutter/packages#6494.

Landed in version: 3.28.0-0.1.pre
In stable release: 3.29