如何根据NSDate计算年龄 [英] How to calculate the age based on NSDate

问题描述

如何根据此格式的出生日期计算年龄6/24/1976 mon / date / year ...

how to calculate the age based on the birth date in this format 6/24/1976 mon/date/year...

推荐答案

许多这些答案并没有适用于闰年，所以最好是使用苹果的方法，而不是除以常数。

Many of these answers don't properly account for leap years and such, best is to use Apple's methods instead of dividing by constants.

NSDate* birthday = ...;

NSDate* now = [NSDate date];
NSDateComponents* ageComponents = [[NSCalendar currentCalendar] 
                                   components:NSCalendarUnitYear 
                                   fromDate:birthday
                                   toDate:now
                                   options:0];
NSInteger age = [ageComponents year];

我认为这比这里的任何其他答案更干净，更准确。

I think this is cleaner and more accurate than any of the other answers here.

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