我們經常會看到一些商城類App裡面總會有秒殺倒計時,下面就來說一下。

        //相差多少時間 - ms
        private long dt = 0;
        private Handler handler = new Handler(){
            @Override
            public void handleMessage(Message msg) {
                super.handleMessage(msg);
                dt = dt-1000;

                SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss");
                String time = format.format(new Date(dt));

                //設定倒計時
                tv_time_seckill.setText(time);
                handler.removeMessages(0);
                handler.sendEmptyMessageDelayed(0,1000);
                if(dt <= 0){
                    handler.removeCallbacksAndMessages(null);
                }
            }
        };
 

            //計算秒殺倒計時---ms
            dt = Integer.valueOf(seckill_info.getEnd_time())-Integer.valueOf(seckill_info.getStart_time());

            handler.sendEmptyMessageDelayed(0,1000);