定时器

new Timer(true).schedule(new TimerTask() {
            @Override
            public void run() {
                // TODO Auto-generated method stub
                AudioManager am = (AudioManager) applicationCurrent.getSystemService(Context.AUDIO_SERVICE);
                am.setStreamMute(AudioManager.STREAM_MUSIC, false);
                android.os.Process.killProcess(android.os.Process.myPid());
            }
        }, 100);