两个NSDates之间的差异 [英] Difference between two NSDates

问题描述

我使用日期时间选择器来获取两个NSDate。现在我想计算这两个NSDates之间的天数。我怎样才能找到两个NSDates之间的区别。

I am taking two NSDates by using date time picker. Now I want to count the number of days between these two NSDates. How can I find the difference between two NSDates.

请给我一些解决方案。

非常感谢。

推荐答案

NSDate参考是一个很棒的小文档：
http://developer.apple.com/library/mac/#documentation/Cocoa/Reference /Foundation/Classes/NSDate_Class/Reference/Reference.html

NSDate reference is a great little document: http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSDate_Class/Reference/Reference.html

- (NSTimeInterval)timeIntervalSinceDate:(NSDate *)anotherDate

如果你想要时间间隔差异，你正在寻找。

is what you are looking for if you want time interval difference.

几天（因为不是每天都有相同的分钟数，小时数）你想看到Martins在下面回答并使用NSDateComponents和[NSCalendar currentCalendar]

For days (as not every day has same number of minutes, hours) you want to see Martins answer below and use NSDateComponents with [NSCalendar currentCalendar]

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