1 page.title=Supporting Multi-Window 2 @jd:body 3 4 <!-- 5 Copyright 2016 The Android Open Source Project 6 7 Licensed under the Apache License, Version 2.0 (the "License"); 8 you may not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 http://www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an "AS IS" BASIS, 15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 --> 19 <div id="qv-wrapper"> 20 <div id="qv"> 21 <h2>In this document</h2> 22 <ol id="auto-toc"> 23 </ol> 24 </div> 25 </div> 26 27 <p> 28 In Android 7.0, users can have multiple apps simultaneously displayed on their 29 device screen with the new platform feature, multi-window. In addition to the 30 default implementation of multi-window, Android 7.0 supports a few varieties 31 of multi-window: split-screen, free-form, and picture-in-picture. 32 </p> 33 34 <ul> 35 <li><strong>Split-screen</strong> is the base implementation of multi-window and 36 provides two activity panes for users to place apps. 37 <li><strong>Freeform</strong> allows users to dynamically resize the activity 38 panes and have more than two apps visible on their screen. 39 <li><strong>Picture-in-picture (PIP)</strong> allows Android devices to continue 40 playing video content in a small window while the user interacts with other 41 applications.</li> 42 </ul> 43 44 <p> 45 To implement the multi-window feature, device manufacturers set a flag in the 46 config file on their devices to enable or disable multi-window support. 47 </p> 48 49 <h2 id="implementation">Implementation</h2> 50 <p> 51 Multi-window support is enabled by default in Android 7.0. To disable it, set 52 the <code>config_supportsMultiWindow</code> flag to false in the <a 53 href="https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/values/config.xml">config.xml</a> 54 file. 55 </p> 56 <p> 57 For devices that declare <code>ActivityManager.isLowRam()</code>, multi-window 58 is disabled regardless of the value of <code>config_supportsMultiWindow</code> 59 flag. 60 </p> 61 <h3 id="split-screen">Split-screen</h3> 62 <p> 63 The default multi-window experience is split-screen mode, where the System UI is 64 divided directly down the middle of the device in portrait or landscape. Users 65 can resize the window by dragging the dividing line side-to-side or 66 top-to-bottom, depending on the device orientation. 67 </p> 68 <p> 69 Then device manufacturers can choose if they want to enable freeform or PIP. 70 </p> 71 <h3 id="freeform">Freeform</h3> 72 <p> 73 After enabling standard multi-window mode with the flag 74 <code>config_supportsMultiWindow</code>, device manufacturers can optionally 75 allow freeform windowing. This mode is most useful for manufacturers of larger 76 devices, like tablets. 77 </p> 78 <p> 79 To support freeform mode, enable the 80 PackageManager#FEATURE_FREEFORM_WINDOW_MANAGEMENT system feature in <a 81 href="https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/content/pm/PackageManager.java">/android/frameworks/base/core/java/android/content/pm/PackageManager.java</a> 82 and set <code>config_freeformWindowManagement</code> to true in <a 83 href="https://android.googlesource.com/platform/frameworks/base/+/master/core/res/res/values/config.xml">config.xml</a>. 84 </p> 85 86 <pre> 87 <bool name="config_freeformWindowManagement">true</bool> 88 </pre> 89 90 <h3 id="picture-in-picture">Picture-in-picture</h3> 91 <p> 92 After enabling standard multi-window mode with the flag 93 <code>config_supportsMultiWindow</code>, device manufacturers can support <a 94 href="http://developer.android.com/preview/features/picture-in-picture.html">picture-in-picture</a> 95 to allow users to continue watching video while browsing other activities. 96 While this features is primarily targeted at Android Television devices, other 97 device form factors may support this feature. 98 </p> 99 <p> 100 To support PIP, enable the PackageManager#FEATURE_PICTURE_IN_PICTURE system 101 feature in <a 102 href="https://android.googlesource.com/platform/frameworks/base/+/master/core/java/android/content/pm/PackageManager.java">/android/frameworks/base/core/java/android/content/pm/PackageManager.java</a>. 103 </p> 104 <h3 id="system-ui">System UI</h3> 105 <p> 106 Support all standard System UIs according to <a 107 href="http://developer.android.com/preview/features/multi-window.html#testing">http://developer.android.com/preview/features/multi-window.html#testing</a> 108 </p> 109 <h3 id="applications">Applications</h3> 110 <p> 111 To support multi-window mode for preloaded apps, consult the <a 112 href="http://developer.android.com/preview/features/multi-window.html">developer 113 preview documentation</a>. 114 </p> 115 <h2 id="validation">Validation</h2> 116 <p> 117 To validate their implementation of multi-window, device manufacturers should 118 run <a 119 href="https://android.googlesource.com/platform/cts/+/master/hostsidetests/services/activitymanager/src/android/server/cts">CTS 120 tests</a> and follow the <a 121 href="http://developer.android.com/preview/features/multi-window.html#testing">testing 122 instructions for multi-window</a>. 123 </p> 124
