我用VideoView播放视频，因为是加载网络视频么，等一会才能加载出来，我想加个加载框ProgressBar来提醒用户等待，我利用Handle每隔半秒就检测视频是否isPlaying中，但是没效果，网上也有用setOnInfoListener这个接口来控制，但是我试过了 没反应。有哪位大神做过类似的程序吗？可否告知一下？谢谢
这是我的代码：

public class PlayVideoActivity extends CommonActivity { @Bind(R.id.playVideo_vv) VideoView playVideoVv; @Bind(R.id.pb) ProgressBar pb; private String videoPath; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.playvideoactivity); ButterKnife.bind(this); initView(); } Handler handler=new Handler(); Runnable runnable=new Runnable() { @Override public void run() { if (playVideoVv.isPlaying()) { pb.setVisibility(View.GONE); }else{ pb.setVisibility(View.VISIBLE); } handler.postDelayed(runnable,500); } }; private void initView() { pb.setVisibility(View.VISIBLE); videoPath=getIntent().getStringExtra("videoPath"); playVideoVv.setVideoPath(videoPath); MediaController mediaController = new MediaController(this,false); // 设置VideView与MediaController建立关联 playVideoVv.setMediaController(mediaController); // 设置MediaController与VideView建立关联 mediaController.setMediaPlayer(playVideoVv); // 让VideoView获取焦点 playVideoVv.requestFocus(); playVideoVv.start(); } }