<activity
android:name=".MainActivity"
android:configChanges="screenSize|smallestScreenSize|screenLayout|orientation"
android:exported="true"
android:resizeableActivity="true"
android:supportsPictureInPicture="true"
android:theme="@android:style/Theme.DeviceDefault.Light.NoActionBar" />
activity里没写东西,也会出现这个bug