In order to restrict the split-screen option in Android Studio, you can add the android:resizeableActivity attribute to the AndroidManifest.xml file for each activity that you want to restrict.
Setting the android:resizeableActivity attribute to false will prevent the activity from being displayed in split-screen mode.
Here’s an example of how to use the android:resizeableActivity attribute:
<activity android:name=".MainActivity"
android:resizeableActivity="false"
android:configChanges="screenSize|smallestScreenSize|screenLayout|orientation"/>
In this example, the MainActivity activity is marked as non-resizable, which means it will not be allowed to be displayed in split-screen mode.
You can use it in multiple activities.
It’s worth noting that this only works on devices running Android 7.0 (Nougat) and later. On older versions of Android, split-screen mode is not available, so this attribute will have no effect.