How to change an iOS device volume programmatically?

Question

Is there a way to change the device volume programmatically? maybe using audio session?

Answer 1

Here you go, this worked for me.

#import 
musicPlayer = [MPMusicPlayerController applicationMusicPlayer];
musicPlayer.volume = 1; // max volume
musicPlayer.volume = 0; // min volume (mute)
musicPlayer.volume = 0.0625; // 1 bar on the overlay volume display