AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.setStreamVolume(AudioManager.STREAM_MUSIC,
am.getStreamMaxVolume(AudioManager.STREAM_MUSIC), 0);
AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
am.setStreamVolume(AudioManager.STREAM_MUSIC,
am.getStreamMaxVolume(AudioManager.STREAM_MUSIC), 0);