java - 安卓中的倒计时

Question

我需要显示一个倒计时时钟，我以毫秒为单位计算了日期之间的差异，如何将其转换为倒计时时钟，即“剩余 20 天 12 小时 12 分钟”？我还剩几个小时。

(mili / 24 * 60 * 60 * 1000)

但这是剩余的总小时数，我如何将其转换为 0-24 小时 0-60 分钟格式？

Answer 1

        //setting time
        Calendar cal1 = Calendar.getInstance();
        Calendar cal2 = Calendar.getInstance();
        cal2.set(Calendar.DATE, 31);
        cal2.set(Calendar.HOUR_OF_DAY, 1);
        cal2.set(Calendar.MINUTE, 50);
        //printing dates

        System.out.println("Date1"+ cal1.getTime());
        System.out.println("Date1"+ cal2.getTime());
        long diffInMillis = cal2.getTimeInMillis() - cal1.getTimeInMillis();

        System.out.println("Diff In Millis : " + diffInMillis);

        int hour  = (int)(diffInMillis/(60.0 * 1000 * 60 ));
        int min  = (int)((diffInMillis - (hour *60.0 *1000 *60))/(60.0*1000));

        System.out.println("Diff In HH:MM: " + hour + ":" + min );

Answer 2

您可以使用标准java.util.Calendar类。

Calendar cal = Calendar.getInstance();
cal.setTimeInMillis(yourTime);
int hour = cal.get(Calendar.HOURS_IN_DAYS);