Stricter Android Intent verification for app entrypoints

You do not need to migrate if:

• You do not pass route, dart_entrypoint, dart_entrypoint_args, cached_engine_id, or cached_engine_group_id extras in Intents.
• Your target FlutterActivity or FlutterFragmentActivity is not exported (android:exported="false").

If you pass these extras to an exported activity, choose one of the following migration strategies:

Set host activities to non-exported

If external apps do not need to open your activity directly, set android:exported="false" in AndroidManifest.xml:

<activity
    android:name=".MyFlutterActivity"
    android:exported="false">
</activity>

and CATEGORY_LAUNCHER) must remain exported so that the system launcher can launch your app.

To route to specific screens from external sources, shortcuts, or notifications, use standard [deep links][] instead of EXTRA_INITIAL_ROUTE:

Intent intent = new Intent(context, MainActivity.class);
intent.setAction(Intent.ACTION_VIEW);
intent.setData(Uri.parse("myapp://product_details"));

Declare matching <intent-filter> entries in AndroidManifest.xml so the embedder can validate the incoming URL.

Declare entrypoints and routes in AndroidManifest.xml

For static entrypoints or initial routes, declare them as <meta-data> in AndroidManifest.xml:

<activity 
    android:name=".MyFlutterActivity"
    android:exported="true">
    <meta-data
        android:name="io.flutter.Entrypoint"
        android:value="myCustomEntrypoint" />
    <meta-data
        android:name="io.flutter.InitialRoute"
        android:value="/customRoute" />
</activity>

Use startActivityForResult on Android 13 and earlier

For internal app launches to an exported activity on Android 13 and earlier, call startActivityForResult() instead of startActivity():

- startActivity(intent);
+ startActivityForResult(intent, REQUEST_CODE);

This populates getCallingPackage(), allowing the embedder to verify that the Intent originated from your app. You do not need to handle the result in onActivityResult().

Override configuration methods in an activity subclass

To provide dynamic entrypoints or arguments without relying on Intent extras, subclass FlutterActivity or FlutterFragmentActivity and override the configuration methods:

public class MyFlutterActivity extends FlutterActivity {
    @NonNull
    @Override
    public String getDartEntrypointFunctionName() {
        return ConfigManager.getEntrypoint(); 
    }
    
    @Nullable
    @Override
    public List<String> getDartEntrypointArgs() {
        return ConfigManager.getArgs();
    }
}