如何知道两个NSDate是否在同一天 [英] How to know if two NSDate are in the same day

问题描述

您知道如何知道两个 NSDate 是否在同一天。我想考虑一下语言环境......

Do you know how to know if two NSDate are the same day. I want to take into account the locale...

可以很容易地使用 timeIntervalSinceDate：但是星期一23H58和周二00H01不在同一天......

It could be easy to use a timeIntervalSinceDate: but Monday 23H58 and Tuesday 00H01 are not in the same day...

处理 NSDate 和计算的区域设置不是非常容易。

Dealing with NSDate and locale for calculation is not very easy.

推荐答案

NSCalendar *calendar = [NSCalendar currentCalendar];

NSDateComponents *componentsForFirstDate = [calendar components:NSDayCalendarUnit|NSMonthCalendarUnit|NSYearCalendarUnit fromDate:firstDate];

NSDateComponents *componentsForSecondDate = [calendar components:NSDayCalendarUnit|NSMonthCalendarUnit|NSYearCalendarUnit fromDate:secondDate];

if ([componentsForFirstDate year] == [componentsForSecondDate year])

等等。

我不知道 isEquals 是否可以做你想要的 NSDateComponents 。

I don't know if isEquals would do what you want on NSDateComponents.

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