android 倒计时显示

安卓的倒计时显示
项目需要没找到太适合的，自己简单写了下

效果.png

 private String ShengYuShiJian(String endTime){
        Date nowDate =  new Date(System.currentTimeMillis());//当前时间
        long nowDateLong = nowDate.getTime();
        String endTimeStr = endTime+ " 00:00:00";
        // String endTimeStr = "2017-12-29"+ " 15:45:00";
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date enddate = null;
        try {
            enddate = simpleDateFormat.parse(endTimeStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        long enddateLong = enddate.getTime();//结束时间
        long timeLong = enddateLong - nowDateLong;//剩余时间

        if(timeLong <= 0 ){
            return  "计时结束";
        }else {
            if (timeLong<60*1000)
                return timeLong/1000 + "秒";
            else if (timeLong<60*60*1000){
                Long timeLongM = timeLong/(1000*60);
                Long timeLongS = timeLong%(1000*60);
                return timeLongM + "分"+timeLongS/1000 + "秒";
            }
            else if (timeLong<60*60*24*1000){
                Long timeLongH = timeLong/(1000*60*60);
                Long timeLongM = timeLong%(1000*60*60);
                Long timeLongS = timeLong%(1000*60);
                return timeLongH+"小时"+ timeLongM/(1000*60) + "分"+timeLongS/1000 + "秒";
            }
            else { //(timeLong<60*60*24*1000*7)
                Long timeLongD = timeLong/(1000*60*60*24);
                Long timeLongH = timeLong%(1000*60*60*24);
                Long timeLongM = timeLong%(1000*60*60);
                Long timeLongS = timeLong%(1000*60);
                return timeLongD + "天"+timeLongH/(1000*60*60)+"小时"+ timeLongM/(1000*60) + "分"+timeLongS/1000 + "秒";
            }
        }
    }

在onCreate中执行upDateUI

private void upDateUI() {
        /**
         * CountDownTimer 实现倒计时
         */
         CountDownTimer countDownTimer = new CountDownTimer(1000000000, 1000) {
            @Override
            public void onTick(long millisUntilFinished) {
                mTextViewTime.setText(ShengYuShiJian(mProduct.getJxBeginDate()));
            }
            @Override
            public void onFinish() {
            }
        };     //调用 CountDownTimer 对象的 start() 方法开始倒计时，也不涉及到线程处理
       

            countDownTimer.start();
    }

这里的millisInFuture随便写的，有点长。。一般人也不会盯着看这么长的倒计时