Sort Array of Dictionaries by NSDate

Question

I have an array of dictionaries. Within each dictionary, there is a a key dateOfInfo (an NSDate) and several other things. I want to sort the array

Answer 1

try like this,

            NSDateFormatter *fmtDate = [[NSDateFormatter alloc] init];
             [fmtDate setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss"];
             NSComparator compareDates = ^(id string1, id string2)
             {
                 NSDate *date1 = [fmtDate dateFromString:string1];
                 NSDate *date2 = [fmtDate dateFromString:string2];

                 return [date1 compare:date2];
             };
             NSSortDescriptor * sortDesc1 = [[NSSortDescriptor alloc] initWithKey:@"StartTime" ascending:YES comparator:compareDates];
             [youArray sortUsingDescriptors:@[sortDesc1]];