rk35xx-android12/developers/samples/android/ui/window/MultiWindowPlayground

Android MultiWindowPlayground Sample

This sample demonstrates the use of the multi-window API available in Android N. It shows the use of new Intent flags and AndroidManifest properties to define the multi-window behavior. Switch the sample app into multi-window mode to see how it affects the lifecycle and behavior of the app.

Introduction

Android N introduces new APIs to support multiple activities to be displayed at the same time.

Activities that are started within the same task stack inherit their multiwindow properties from the activity that fired off the intent. The following features are available when an activity has been launched into a new task stack.

An activity can be set as not resizable through the android:resizableActivity property in the AndroidManifest. All applications targeting Android N or above are resizable by default.

In split-screen mode, an activity can be started adjacent to the launching activity by setting the Intent.FLAG_ACTIVITY_LAUNCH_TO_ADJACENT flag in its intent.

Sometimes activities may choose to handle configuration changes themselves (for example for games or OpenGL-based applications). In this case, setting android:configChanges=screenSize|smallestScreenSize|screenLayout|orientation in the AndroidManifest definition of the activity enables callbacks for all configuration changes that may occur during multi-window use for the Activity. See Handling Runtime Changes.

In freeform mode (where applications can be freely resized), activities can be started within a certain area of the screen using the ActivityOptions#setLaunchBounds call.

Alternatively, the preferred and minimum sizes can be set in a new layout property in the AndroidManifest.

Pre-requisites

• Android SDK 24
• Android Build Tools v28.0.3
• Android Support Repository

Screenshots

Getting Started

This sample uses the Gradle build system. To build this project, use the "gradlew build" command or use "Import Project" in Android Studio.

Support

• Google+ Community: https://plus.google.com/communities/105153134372062985968
• Stack Overflow: http://stackoverflow.com/questions/tagged/android

If you've found an error in this sample, please file an issue: https://github.com/googlesamples/android-MultiWindowPlayground

Patches are encouraged, and may be submitted by forking this project and submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.

License

Copyright 2019 The Android Open Source Project, Inc.

Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.