Android - Play audio from earpiece

Question

I\'d like to play audio from a file into the phone\'s earpiece (or headset of that is connected) using the android MediaPlayer. I tried using the MODE_IN_CALL h

Answer 1

The following code works fine for me and I have tested in on multiple devices:

1- creating instances:

MediaPlayer mPlayer = MediaPlayer.create(MainActivity.this, R.raw.skype_call_dialing);
AudioManager mAudioManager = ((AudioManager).getSystemService(Context.AUDIO_SERVICE));

2- if you want to set volume to max (optional)

 int maxVolumeMusic = mAudioManager.getStreamMaxVolume(AudioManager.STREAM_MUSIC);
 mAudioManager.setStreamVolume(AudioManager.STREAM_MUSIC, maxVolumeMusic, AudioManager.FLAG_REMOVE_SOUND_AND_VIBRATE);
 mAudioManager.setMode(AudioManager.STREAM_MUSIC);

3- set audio to play from earpiece:

mAudioManager.setSpeakerphoneOn(false);

4- play:

mPlayer.setLooping(true);
mPlayer.start();

Done!!!! But there is some tips I am going to share with you:

1- in step 2, if you set Audiomanager.setMode() before AudioManager.setStreamVolume() then the volume would not set to max!

2- if you add mPlayer.prepare() before mPlayer.setLooping(true); it would lead to crash!, you should not use mPlayer.prepare() while mPlayer is initializing like this:

MediaPlayer mPlayer = MediaPlayer.create(MainActivity.this, R.raw.skype_call_dialing);

3- in step 2, mAudioManager.setMode() I used AudioManager.STREAM_MUSIC, when I try other modes, in many cases I was not able to switch on and off speaker!