每次安装apk时，Android中的CountDownTimer都会保持重置状态

Question

我正在使用Android CountDownTimer作为我的应用程序的计时器。应用程序应获取当前时间并将其减去一段时间以开始倒计时，例如，如果我们在6/4/2018晚上10点。我希望计数器倒计时到6/5/2018，它将从0.23.59.59开始，而它应该从0.1.59.59开始，因为距离目标只有两个小时。这是我的代码：

 Calendar start_calendar = Calendar.getInstance(TimeZone.getDefault());
    Calendar end_calendar = Calendar.getInstance();


    start_calendar.set(start_calendar.get(Calendar.YEAR), start_calendar.get(Calendar.MONTH), start_calendar.get(Calendar.DAY_OF_MONTH));
    end_calendar.set(2018, 5, 5); // 10 = November, month start at 0 = January

    long start_millis = start_calendar.getTimeInMillis(); //get the start time in milliseconds
    long end_millis = end_calendar.getTimeInMillis(); //get the end time in milliseconds
    long total_millis = (end_millis - start_millis); //total time in milliseconds


    //1000 = 1 second interval
    CountDownTimer cdt = new CountDownTimer(total_millis, 1000) {
        @Override
        public void onTick(long millisUntilFinished) {
            long days = TimeUnit.MILLISECONDS.toDays(millisUntilFinished);
            millisUntilFinished -= TimeUnit.DAYS.toMillis(days);

            long hours = TimeUnit.MILLISECONDS.toHours(millisUntilFinished);
            millisUntilFinished -= TimeUnit.HOURS.toMillis(hours);

            long minutes = TimeUnit.MILLISECONDS.toMinutes(millisUntilFinished);
            millisUntilFinished -= TimeUnit.MINUTES.toMillis(minutes);

            long seconds = TimeUnit.MILLISECONDS.toSeconds(millisUntilFinished);

            timer.setText(days + ":" + hours + ":" + minutes + ":" + seconds); //You can compute the millisUntilFinished on hours/minutes/seconds
        }

        @Override
        public void onFinish() {
           timer.setText("finish!");
        }
    };
    cdt.start();

任何帮助都将不胜感激。