Pausar y reanudar la reproducción

@Override
public void onResume() {
    super.onResume();
    requestAudioFocus();
    if (_lastKnownStatus == MediaPlayerStatus.PAUSED) {
        _mediaPlayer.play();
    }
}
...

@Override
public void onPause() {
    super.onPause();
    if (_mediaPlayer != null) {
        if (_mediaPlayer.getStatus() == MediaPlayerStatus.PLAYING ||
          _mediaPlayer.getStatus() == MediaPlayerStatus.PAUSED) {
            _savedPlayerStatus = _mediaPlayer.getStatus();
            _lastKnownTime = _mediaPlayer.getCurrentTime();
        }
        if (_mediaPlayer.getStatus() == MediaPlayerStatus.PLAYING) {
            _mediaPlayer.pause();
            _lastKnownStatus = MediaPlayerStatus.PAUSED;
        }
    }
}
abandonAudioFocus();