问Android开发-2秒后连续切换gridview图片-如何使用handler来完成此任务？

EN

    private Handler mHandler = new Handler();

    public void onCreate(Bundle savedInstanceState) {
       // init grid and set first batch of images
    }

    protected void onResume() {
         mHandler.postDelayed(mUpdateImagesTask , 2000);
     }


    private Runnable mUpdateImagesTask = new Runnable() {
    public void run() {
               // Code to change the images

               // call me in 2 seconds...
               mHandler.postDelayed(this, 2000); // 2 seconds
            }
     };