java android计算两个时间间隔

最新推荐文章于 2023-10-31 19:53:43 发布

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最新推荐文章于 2023-10-31 19:53:43 发布

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分类专栏： android初级

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本文详细介绍了如何使用Java编程语言实现两个日期之间的间隔计算，包括字符串日期格式的转换和日期时间差的精确计算。

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public static int daysBetween(Date startDate, Date endDate)
throws java.text.ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
startDate = sdf.parse(sdf.format(startDate));
endDate = sdf.parse(sdf.format(endDate));
Calendar calendar = Calendar.getInstance();
calendar.setTime(startDate);
long time1 = calendar.getTimeInMillis();

calendar.setTime(endDate);
long time2 = calendar.getTimeInMillis();

long betweenDays = (time2 - time1) / (1000 * 3600 * 24);
return Integer.parseInt(String.valueOf(betweenDays));

}

public static int stringDaysBetween(String smdate, String bdate)
throws ParseException, java.text.ParseException {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Calendar cal = Calendar.getInstance();
cal.setTime(sdf.parse(smdate));
long time1 = cal.getTimeInMillis();
cal.setTime(sdf.parse(bdate));
long time2 = cal.getTimeInMillis();
long between_days = (time2 - time1) / (1000 * 3600 * 24);

return Integer.parseInt(String.valueOf(between_days));
}