延时而不阻塞进程

1、定义变量：

private Handler timerUpdateHandler; 

2、调用方法：

timerUpdateHandler = new Handler();  
timerUpdateHandler.post(timerUpdateTask); 

3、定义子线程：

private Runnable timerUpdateTask = new Runnable() {         
           @Override  
            public void run() {  
               if(time<=percent){
                       RelativeLayout relativeLayout2 = (RelativeLayout) views.get(
                               curPage).findViewById(R.id.relativeLayout2);
                       RoundProgressBar fff = (RoundProgressBar)relativeLayout2.getChildAt(0);
                       fff.setProgress(time++);
                       timerUpdateHandler.postDelayed(timerUpdateTask, 40);  
               }
          }  
    };