io.flutter.embedding.android

Class FlutterActivity.NewEngineIntentBuilder

java.lang.Object

io.flutter.embedding.android.FlutterActivity.NewEngineIntentBuilder

Enclosing class:

FlutterActivity

public static class FlutterActivity.NewEngineIntentBuilder
extends Object

Builder to create an Intent that launches a FlutterActivity with a new FlutterEngine and the desired configuration.

Constructor Summary

Constructors

Constructor and Description
NewEngineIntentBuilder(Class<? extends FlutterActivity> activityClass) Constructor that allows this NewEngineIntentBuilder to be used by subclasses of FlutterActivity.

Method Summary

Modifier and Type	Method and Description
FlutterActivity.NewEngineIntentBuilder	backgroundMode(FlutterActivityLaunchConfigs.BackgroundMode backgroundMode) The mode of FlutterActivity's background, either FlutterActivityLaunchConfigs.BackgroundMode.opaque or FlutterActivityLaunchConfigs.BackgroundMode.transparent.
Intent	build(Context context) Creates and returns an Intent that will launch a FlutterActivity with the desired configuration.
FlutterActivity.NewEngineIntentBuilder	initialRoute(String initialRoute) The initial route that a Flutter app will render in this FlutterFragment, defaults to "/".

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NewEngineIntentBuilder

public NewEngineIntentBuilder(@NonNull
                              Class<? extends FlutterActivity> activityClass)

Constructor that allows this NewEngineIntentBuilder to be used by subclasses of FlutterActivity.

Subclasses of FlutterActivity should provide their own static version of FlutterActivity.withNewEngine(), which returns an instance of NewEngineIntentBuilder constructed with a Class reference to the FlutterActivity subclass, e.g.:

return new NewEngineIntentBuilder(MyFlutterActivity.class);

Method Detail

initialRoute

@NonNull
public FlutterActivity.NewEngineIntentBuilder initialRoute(@NonNull
                                                                    String initialRoute)

The initial route that a Flutter app will render in this FlutterFragment, defaults to "/".

backgroundMode

@NonNull
public FlutterActivity.NewEngineIntentBuilder backgroundMode(@NonNull
                                                                      FlutterActivityLaunchConfigs.BackgroundMode backgroundMode)

The mode of FlutterActivity's background, either FlutterActivityLaunchConfigs.BackgroundMode.opaque or FlutterActivityLaunchConfigs.BackgroundMode.transparent.

The default background mode is FlutterActivityLaunchConfigs.BackgroundMode.opaque.

Choosing a background mode of FlutterActivityLaunchConfigs.BackgroundMode.transparent will configure the inner FlutterView of this FlutterActivity to be configured with a FlutterTextureView to support transparency. This choice has a non-trivial performance impact. A transparent background should only be used if it is necessary for the app design being implemented.

A FlutterActivity that is configured with a background mode of FlutterActivityLaunchConfigs.BackgroundMode.transparent must have a theme applied to it that includes the following property: <item name="android:windowIsTranslucent">true</item>.

build

@NonNull
public Intent build(@NonNull
                             Context context)

Creates and returns an Intent that will launch a FlutterActivity with the desired configuration.