1
2Android MultiWindowPlayground Sample
3===================================
4
5This sample demonstrates the use of the multi-window API available
6in Android N. It shows the use of new Intent flags and
7AndroidManifest properties to define the multi-window behavior.
8Switch the sample app into multi-window mode to see how it affects
9the lifecycle and behavior of the app.
10
11Introduction
12------------
13
14Android N introduces new APIs to support multiple activities
15to be displayed at the same time.
16
17Activities that are started within the same task stack
18inherit their multiwindow properties from the activity that fired
19off the intent. The following features are available when an activity
20has been launched into a new task stack.
21
22An activity can be set as not resizable through the
23`android:resizableActivity` property in the AndroidManifest. All
24applications targeting Android N or above are resizable by default.
25
26In split-screen mode, an activity can be started adjacent to the
27launching activity by setting the
28`Intent.FLAG_ACTIVITY_LAUNCH_TO_ADJACENT` flag in its intent.
29
30Sometimes activities may choose to handle configuration changes
31themselves (for example for games or OpenGL-based applications). In this
32case, setting
33`android:configChanges=screenSize|smallestScreenSize|screenLayout|orientation`
34in the AndroidManifest definition of the activity enables callbacks for
35all configuration changes that may occur during multi-window use for the
36Activity. See [Handling Runtime Changes][1].
37
38In freeform mode (where applications can be freely resized), activities
39can be started within a certain area of the screen using the
40`ActivityOptions#setLaunchBounds` call.
41
42Alternatively, the preferred and minimum sizes can be set in a new
43`layout` property in the AndroidManifest.
44
45
46[1]: https://developer.android.com/guide/topics/resources/runtime-changes.html
47
48Pre-requisites
49--------------
50
51- Android SDK 24
52- Android Build Tools v28.0.3
53- Android Support Repository
54
55Screenshots
56-------------
57
58<img src="screenshots/main.png" height="400" alt="Screenshot"/>
59
60Getting Started
61---------------
62
63This sample uses the Gradle build system. To build this project, use the
64"gradlew build" command or use "Import Project" in Android Studio.
65
66Support
67-------
68
69- Google+ Community: https://plus.google.com/communities/105153134372062985968
70- Stack Overflow: http://stackoverflow.com/questions/tagged/android
71
72If you've found an error in this sample, please file an issue:
73https://github.com/googlesamples/android-MultiWindowPlayground
74
75Patches are encouraged, and may be submitted by forking this project and
76submitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
77
78License
79-------
80
81Copyright 2019 The Android Open Source Project, Inc.
82
83Licensed to the Apache Software Foundation (ASF) under one or more contributor
84license agreements.  See the NOTICE file distributed with this work for
85additional information regarding copyright ownership.  The ASF licenses this
86file to you under the Apache License, Version 2.0 (the "License"); you may not
87use this file except in compliance with the License.  You may obtain a copy of
88the License at
89
90http://www.apache.org/licenses/LICENSE-2.0
91
92Unless required by applicable law or agreed to in writing, software
93distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
94WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
95License for the specific language governing permissions and limitations under
96the License.
97