uidatepicker -nsdate增量？

Question

是否可以按月增加NSDATE？例如，nsdate = 12/10/01，增加一個月使它12/11/01。

Answer 1

您需要使用NSCalendar類日曆計算：

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];