Timer mTimer = new Timer();
        TimerTask mTimerTask = new TimerTask() {
            @Override
            public void run() {
            //run方法中执行需要间隔执行的代码
                Log.d("test","---1111----");
                sendRequestWithOkHttp();
            }
        };
        //2s后开始执行，间隔为4s
        mTimer.schedule(mTimerTask, 2000,4000);