Parse jtring date with objective-c

i have a NSString variables like this dd-MM-YYYY exemple 30-05-2011 . How开发者_运维百科 can i get day in a variable , month in variable and year in variable ? thank you

Use NSDateFormatter and NSDateComponents.

In particular, for the format "dd-MM-YYYY":

NSDateFormatter *formatter = [[[NSDateFormatter alloc] init] autorelease];
[formatter setDateFormat:@"dd'-'MM'-'yyyy"];
// Your date represented as a NSDate
NSDate *date = [formatter dateFromString:myDateString];
// Now, use NSCalendar / NSDateComponents to get the components
NSDateComponents *comps = [[NSCalendar currentCalendar] components:NSYearCalendarUnit|NSMonthCalendarUnit|NSDayCalendarUnit
                                                          fromDate:date];

Now you're free to access [comps day], [comps month], and [comps year].

See here for a description of all the format-parsing options. Keep in mind that NSDateFormatter also supports older versions of this standard, so you'll have to be careful.

You could do something along the lines of ...

    NSString *dateAsString = @"30-05-2011";
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    [formatter setDateFormat:@"d-MM-yyyy"];
    NSDate *datePlain = [formatter dateFromString:dateAsString]; 
    [formatter release];

and then use the NSDate object datePlain

Take a look at the dateFromString: method of NSDateFormatter.

NSDateFormatter *df = [[NSDateFormatter alloc]init];
[df setDateFormat:@"yyyy-MM-dd"];
NSDate *d = [df dateFromString:@"2011-05-10"];
[df release];

You can do whatever you need to do with the NSDate object.