Question

What’s the right way to shut down a MediaController with an attached MediaPlayer?

You can’t do mediaController.setMediaPlayer(null) – that immediately calls updatePausePlay, which dereferences the null.

You can’t call mediaPlayer.release(), since MediaController is going to call MediaPlayer#getCurrentPosition, and that throws an IllegalStateException after release() has been called.

Answer 1

try the below snippet, in this order

mediaController.hide();
mediaPlayer.stop();
mediaPlayer.release();