uidatepicker -nsdate增量？

Question

是否有可能按月增加NSDATE？例如,nsdate = 12/10/01,增加一个月使其成为12/11/01.

Answer 1

您需要使用NSCalendar类进行日历计算:

NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
NSDateComponents *comp = [[[NSDateComponents alloc] init] autorelease];
[comp setMonth: 1];
NSDate* newDate = [gregorian dateByAddingComponents:comp toDate:oldDate options:NSWrapCalendarComponents];