Get all days of any month with objective-c

Question

A seemingly simple question...how can I return a list of days for any specified month?

NSDate *today = [NSDate date]; //Get a date object for today's date
NSCalendar *c = [NSCalendar currentCalendar];
NSRange days = [c rangeOfUnit:NSDayCalendarUnit 
        inUnit:NSMonthCalendarUnit 
       forDate:today];

I basically want to use that, but replace today with say, the month of January, so I can return all of those days

Answer 1

You can make your date with pretty much any string:

NSDate *date = [NSDate dateWithNaturalLanguageString:@"January"];

Then the rest of your code will work as-is to give you back the NSRange for the number of days in January.

Answer 2

Carl's answer works on Mac. The following works on Mac or iPhone (no dateWithNaturalLanguageString: available there).

NSCalendar* cal = [NSCalendar currentCalendar];
NSDateComponents* comps = [[[NSDateComponents alloc] init] autorelease];

// Set your month here
[comps setMonth:1];

NSRange range = [cal rangeOfUnit:NSDayCalendarUnit
                          inUnit:NSMonthCalendarUnit
                         forDate:[cal dateFromComponents:comps]];
NSLog(@"%d", range.length);