출처 : http://dmh11.tistory.com/172
_player = new MediaPlayer(); _seekbar = (SeekBar) view.findViewById(R.id.progress_play); . . setDataSource prepare start . . ScheduledExecutorService service = Executors.newScheduledThreadPool(1); service.scheduleWithFixedDelay(new Runnable() { @Override public void run() { _seekbar.setProgress(_player.getCurrentPosition()); } }, 1, 1, TimeUnit.MICROSECONDS);