Objective c 说明使用NSDate的日期

我有一个NSDate，我想知道它是否发生在任何一年的某一天。我该怎么做

例如，我想看看NSDate的日期和月份是否是25和12

我想去：

NSDate *today = [NSDate date];    
int day = [today day];
int month = [today month];

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有办法吗？

您可以使用-[NSCalendar components:fromDate:]来执行此操作：

NSDate                     *date = [NSDate date];
NSCalendar                 *cal = [NSCalendar currentCalendar];
int                        comp = NSMonthCalendarUnit |  NSDayCalendarUnit;
NSDateComponents           *cmpnts = [cal components: comp fromDate: date];

int                        day = [cmpnts day];
int                        month = [cmpnts month];

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您可以使用-[NSCalendar components:fromDate:]执行以下操作：

NSDate                     *date = [NSDate date];
NSCalendar                 *cal = [NSCalendar currentCalendar];
int                        comp = NSMonthCalendarUnit |  NSDayCalendarUnit;
NSDateComponents           *cmpnts = [cal components: comp fromDate: date];

int                        day = [cmpnts day];
int                        month = [cmpnts month];