xref: /aosp_15_r20/developers/build/prebuilts/gradle/MultiWindowPlayground/kotlinApp/README.md (revision d353a188ca6ec4b5eba25b5fbd7bcb8ce61322fb)
1*d353a188SXin LiAndroid MultiWindowPlayground Sample (Kotlin)
2*d353a188SXin Li=============================================
3*d353a188SXin Li
4*d353a188SXin LiThis sample demonstrates the use of the multi-window API available
5*d353a188SXin Liin Android N. It shows the use of new Intent flags and
6*d353a188SXin LiAndroidManifest properties to define the multi-window behavior.
7*d353a188SXin LiSwitch the sample app into multi-window mode to see how it affects
8*d353a188SXin Lithe lifecycle and behavior of the app.
9*d353a188SXin Li
10*d353a188SXin LiIntroduction
11*d353a188SXin Li------------
12*d353a188SXin Li
13*d353a188SXin LiAndroid N introduces new APIs to support multiple activities
14*d353a188SXin Lito be displayed at the same time.
15*d353a188SXin Li
16*d353a188SXin LiActivities that are started within the same task stack
17*d353a188SXin Liinherit their multiwindow properties from the activity that fired
18*d353a188SXin Lioff the intent. The following features are available when an activity
19*d353a188SXin Lihas been launched into a new task stack.
20*d353a188SXin Li
21*d353a188SXin LiAn activity can be set as not resizable through the
22*d353a188SXin Li`android:resizableActivity` property in the AndroidManifest. All
23*d353a188SXin Liapplications targeting Android N or above are resizable by default.
24*d353a188SXin Li
25*d353a188SXin LiIn split-screen mode, an activity can be started adjacent to the
26*d353a188SXin Lilaunching activity by setting the
27*d353a188SXin Li`Intent.FLAG_ACTIVITY_LAUNCH_TO_ADJACENT` flag in its intent.
28*d353a188SXin Li
29*d353a188SXin LiSometimes activities may choose to handle configuration changes
30*d353a188SXin Lithemselves (for example for games or OpenGL-based applications). In this
31*d353a188SXin Licase, setting
32*d353a188SXin Li`android:configChanges=screenSize|smallestScreenSize|screenLayout|orientation`
33*d353a188SXin Liin the AndroidManifest definition of the activity enables callbacks for
34*d353a188SXin Liall configuration changes that may occur during multi-window use for the
35*d353a188SXin LiActivity. See [Handling Runtime Changes][1].
36*d353a188SXin Li
37*d353a188SXin LiIn freeform mode (where applications can be freely resized), activities
38*d353a188SXin Lican be started within a certain area of the screen using the
39*d353a188SXin Li`ActivityOptions#setLaunchBounds` call.
40*d353a188SXin Li
41*d353a188SXin LiAlternatively, the preferred and minimum sizes can be set in a new
42*d353a188SXin Li`layout` property in the AndroidManifest.
43*d353a188SXin Li
44*d353a188SXin Li
45*d353a188SXin Li[1]: https://developer.android.com/guide/topics/resources/runtime-changes.html
46*d353a188SXin Li
47*d353a188SXin LiPre-requisites
48*d353a188SXin Li--------------
49*d353a188SXin Li
50*d353a188SXin Li- Android SDK 27
51*d353a188SXin Li- Android Support Repository
52*d353a188SXin Li
53*d353a188SXin LiScreenshots
54*d353a188SXin Li-------------
55*d353a188SXin Li
56*d353a188SXin Li<img src="screenshots/main.png" height="400" alt="Screenshot"/>
57*d353a188SXin Li
58*d353a188SXin LiGetting Started
59*d353a188SXin Li---------------
60*d353a188SXin Li
61*d353a188SXin LiThis sample uses the Gradle build system. To build this project, use the
62*d353a188SXin Li"gradlew build" command or use "Import Project" in Android Studio.
63*d353a188SXin Li
64*d353a188SXin LiSupport
65*d353a188SXin Li-------
66*d353a188SXin Li
67*d353a188SXin Li- Google+ Community: https://plus.google.com/communities/105153134372062985968
68*d353a188SXin Li- Stack Overflow: http://stackoverflow.com/questions/tagged/android
69*d353a188SXin Li
70*d353a188SXin LiIf you've found an error in this sample, please file an issue:
71*d353a188SXin Lihttps://github.com/googlesamples/android-MultiWindowPlayground
72*d353a188SXin Li
73*d353a188SXin LiPatches are encouraged, and may be submitted by forking this project and
74*d353a188SXin Lisubmitting a pull request through GitHub. Please see CONTRIBUTING.md for more details.
75*d353a188SXin Li
76*d353a188SXin LiLicense
77*d353a188SXin Li-------
78*d353a188SXin Li
79*d353a188SXin LiCopyright 2017 The Android Open Source Project, Inc.
80*d353a188SXin Li
81*d353a188SXin LiLicensed to the Apache Software Foundation (ASF) under one or more contributor
82*d353a188SXin Lilicense agreements.  See the NOTICE file distributed with this work for
83*d353a188SXin Liadditional information regarding copyright ownership.  The ASF licenses this
84*d353a188SXin Lifile to you under the Apache License, Version 2.0 (the "License"); you may not
85*d353a188SXin Liuse this file except in compliance with the License.  You may obtain a copy of
86*d353a188SXin Lithe License at
87*d353a188SXin Li
88*d353a188SXin Lihttp://www.apache.org/licenses/LICENSE-2.0
89*d353a188SXin Li
90*d353a188SXin LiUnless required by applicable law or agreed to in writing, software
91*d353a188SXin Lidistributed under the License is distributed on an "AS IS" BASIS, WITHOUT
92*d353a188SXin LiWARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
93*d353a188SXin LiLicense for the specific language governing permissions and limitations under
94*d353a188SXin Lithe License.
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