You can see the supported features here: https://www.b4x.com/android/help/exoplayer.html#simpleexoplayer
This is not an ExoPlayer feature. It just removes the ExoPlayer view and puts it in a full screen dialog.This is about the full screen :
My app is portraitThis is not an ExoPlayer feature. It just removes the ExoPlayer view and puts it in a full screen dialog.
You can do the same thing yourself.
I tested this , this is not optimalIf you are interested in rotating the screen, you will find examples searching the forum. See for instance the phone-library:
it's a simple way to full screen, i think efficient
Plaese chek this code