Question

我面临着让Epoch在当天开始和结束时排名第二的问题。即8月12日00:00:00和8月23日9月15日。

Answer 1

以下两个函数用于返回当天的开始和EPOCH秒的结束。

 public static Long getStartOfDayEpochSecond() {
    long secondInaDay = 60 * 60 * 24;
    long currentMilliSecond = System.currentTimeMillis() / 1000;
    long startOfTheDayEpoch= currentMilliSecond - (currentMilliSecond %secondInaDay);
   return startOfTheDayEpoch;
}

//将endOfTheDayEpoch减去-1，因为我们在当天结束时使用23.59.59。

public static Long getEndOfDayEpochSecond() {
long startOfTheDayEpoch=getStartOfDayEpochSecond();
    long secondInaDay = 60 * 60 * 24;
    long endOfTheDayEpoch = dateFrom + secondInaDay-1;
    return endOfTheDayEpoch;
}

Answer 2

希望这会有所帮助：

public long getStartOfDayInMillis() {
   Calendar calendar = Calendar.getInstance();
   calendar.set(Calendar.HOUR_OF_DAY, 0);
   calendar.set(Calendar.MINUTE, 0);
   calendar.set(Calendar.SECOND, 0);
   calendar.set(Calendar.MILLISECOND, 0);
   return calendar.getTimeInMillis();
 }

public long getEndOfDayInMillis() {
// Add one day's time to the beginning of the day.
// 24 hours * 60 minutes * 60 seconds * 1000 milliseconds = 1 day
return getStartOfDayInMillis() + (24 * 60 * 60 * 1000);
}

在Java / Android中获得一天的开始和结束时间

2 个答案: