CountDownTimer使用

//totalTime:总时间，time:每隔time毫秒执行一次。        /*mCountDownTimer = new CountDownTimer(totalTime,time) {            @Override            public void onTick(long millisUntilFinished) {                Message msg = new Message();                msg.what = msgWhat;                num --;                msg.obj = num;                handler.sendMessage(msg);                System.out.println("----------->onTick");            }            @Override            public void onFinish() {                System.out.println("----------->onFinish");            }        };        mCountDownTimer.start();*/