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以时间格式时移作为输入，平移后的实时作为输出

发布于 2025-01-07 13:34:21 字数 141 浏览 0 评论 0原文

请问，我该如何：

输入（不使用时间选择器）时间偏移，例如 02:21:22，
然后显示添加了时间偏移的时钟。

因此，如果当前时间为 13:20:31，则显示的时间将为 15:41:53 ...

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逆光下的微笑 2025-01-14 13:34:21

您可能需要一些类似 Calendar< /code>用于时间添加。示例：

Calendar future = Calendar.getInstance();
future.add(Calendar.HOUR_OF_DAY, enteredHour);
future.add(Calendar.MINUTE, enteredMinute);
future.add(Calendar.SECOND, enteredSecond);
//And so on...
//Now the calendar instance 'future' holds the current time plus the added values.

对于输入时间，一种可能是将其作为文本输入，然后使用 DateFormatter 获取 日期 来自它。例子：

SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
Date enteredDate = sdf.parse(string); //String can be the input from an edit-text for example.
//You can now get the hours/minutes/seconds from the date with any of the Dates get-methods.

You will probably want some thing like the Calendar for the time addition. Example:

Calendar future = Calendar.getInstance();
future.add(Calendar.HOUR_OF_DAY, enteredHour);
future.add(Calendar.MINUTE, enteredMinute);
future.add(Calendar.SECOND, enteredSecond);
//And so on...
//Now the calendar instance 'future' holds the current time plus the added values.

As for entering the time, one possibility is to enter it as a text, and then use a DateFormatter to get a Date from it. Example:

SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");
Date enteredDate = sdf.parse(string); //String can be the input from an edit-text for example.
//You can now get the hours/minutes/seconds from the date with any of the Dates get-methods.

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套路撩心 2025-01-14 13:34:21

/**
 * This function returns the formatted string of current time, shifted by time interval, </br>
 * set in "shift" parameter, formatted in the same way.
 * @param shift
 * @return
 * @throws ParseException
 */
static String addToCurrent(String shift) throws ParseException {
    long now=System.currentTimeMillis();
    SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");
    Date shiftDate=df.parse(shift);
    long shiftedLong= shiftDate.getTime()+now;
    return df.format(shiftedLong);
}

/**
 * This function returns the formatted string of current time, shifted by time interval, </br>
 * set in "shift" parameter, formatted in the same way.
 * @param shift
 * @return
 * @throws ParseException
 */
static String addToCurrent(String shift) throws ParseException {
    long now=System.currentTimeMillis();
    SimpleDateFormat df = new SimpleDateFormat("HH:mm:ss");
    Date shiftDate=df.parse(shift);
    long shiftedLong= shiftDate.getTime()+now;
    return df.format(shiftedLong);
}

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