Android延迟执行的三种方式

new Thread(new Runnable() {
      public void run() {
        //sleep设置的是时长
        Thread.sleep(1000);
        handler.sendMessage();
    }
}).start

TimerTask task = new TimerTask() {
                            @Override
                            public void run() {
                                MotionEvent event = MotionEvent.obtain(195534905, 195534905, MotionEvent.ACTION_DOWN, 549, 867, 0);
                                webView.onTouchEvent(event);
                            }
                        };
                        Timer timer = new Timer();
                        timer.schedule(task, 3000);

new Handler().postDelayed(new Runnable()) {
    public void run() {
        //要执行的任务
    }
}, delay);