Seekbar不会更新

Question

我想播放音乐，所以我用搜索器来显示进度，一切都很好，直到我按下暂停按钮，搜索栏停止但是当我按下播放按钮时，搜索栏不移动，我想出来是因为getcurrentposition（）方法，暂停后不更新，下面是我的代码，它有什么问题？

@Override
        public void onClick(View v) {
            try {
                if (isPlaying) {
                    buttonPlayPause.setImageResource(R.drawable.play);
                    mediaPlayer.pause();
                    isPlaying = false;
                } else {
                    buttonPlayPause.setImageResource(R.drawable.pause);
                    isPlaying = true;
                    mediaPlayer.start();
                    primarySeekBarProgressUpdater();
                }
            } catch (Exception e) {
                onDestroy();
            }
        }
    }); 


 private void primarySeekBarProgressUpdater() {
    try {
        seekBarProgress
                .setProgress((int) (((float) mediaPlayer
                        .getCurrentPosition() / mediaFileLengthInMilliseconds) * 100));
        if (mediaPlayer.isPlaying()) {
            Runnable notification = new Runnable() {
                public void run() {
                    primarySeekBarProgressUpdater();
                }
            };
            handler.postDelayed(notification, 1000);
        }
    } catch (Exception e) {
        onDestroy();
    }
}