延迟执行任务的几种方式

1.线程休眠

    new Thread(new Runnable(){
              public void run(){
                       Thread.sleep(XXXX);
                       //执行代码
                    }
          }).start();
    }

    new Thread(new Runnable(){
              public void run(){
                  SystemClock.sleep(XXXX);
                       //执行代码
                    }
          }).start();
    }

2.发送延时消息（推荐）

         new Handler(new Handler.Callback() {
              @Override
              public boolean handleMessage(Message msg) {
                      //执行代码
                        return false;
                      }
                  }).sendEmptyMessageDelayed(0, XXX);

3.线程延时执行

new Handler().postDelayed(new Runnable(){    
    public void run() {    
    //执行代码    
    }    
 }, XXX);  

4.设置定时器

    TimerTask task = new TimerTask(){
              public void run(){
                  //执行代码
                   }
             };
        Timer timer = new Timer();
        timer.schedule(task, XXX);