How to mute the sound in the smartphone when a warning message is played?

Question

Android

Tell me how to mute extraneous sounds in Android (music, movies in the background, etc.) when I need to play short sound warnings in my program?
Tried with AudioManager.requestAudioFocus with AUDIOFOCUS_GAIN_TRANSIENT and AUDIOFOCUS_GAIN_TRANSIENT_MAY_DUCK flags. Does not help. The player in the background still plays music at the same volume.

Answer 1

I understand that the player must have OnAudioFocusChangeListener for this. if the player is a third party application, there is no guarantee that it is there.