dateByAddingComponents problem and getting difference of dates with NSDateComponents problem!
- by Rob
I am having problems with adding values to dates and also getting differences between dates.
The dates and components calculated are incorrect.
So for adding, if I add 1.5 months, I only get 1 month, however if I add any whole number ie (1 or 2 or 3 and etc) it calculates correctly.
Float32 addAmount = 1.5;
NSDateComponents *components = [[[NSDateComponents alloc] init] autorelease];
[components setMonth:addAmount];
NSCalendar *gregorian = [[[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar] autorelease];
[gregorian setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
NSDate *newDate2 = [gregorian dateByAddingComponents:components toDate:Date1 options:0];
Now for difference, if I have a date that has been added with exactly one year (almost same code as above), it adds correctly, but when the difference is calculated, I get 0 years, 11 months and 30 days.
NSDate *startDate = Date1;
NSDate *endDate = Date2;
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSGregorianCalendar];
[gregorian setTimeZone:[NSTimeZone timeZoneWithName:@"UTC"]];
NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit;
NSDateComponents *components = [gregorian components:unitFlags
fromDate:startDate
toDate:endDate options:0];
NSInteger years = [components year];
NSInteger months = [components month];
NSInteger days = [components day];
What am I doing wrong? Also I have added the kCFCalendarComponentsWrap constanct in the options for both adding and difference functions but with no difference.
Thanks
