70.2 Enabling Picture-in-Picture Mode
PiP mode is currently only supported on devices running API 26: Android 8.0 (Oreo) or newer. The first step in implementing PiP mode is to enable it within the project’s manifest file. PiP mode is configured on a per activity basis by adding the following lines to each activity element for which PiP support is required:
<activity android:name=".MyActivity"
android:supportsPictureInPicture="true"
android:configChanges=
"screenSize|smallestScreenSize|screenLayout|orientation"
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent...