Number of days between two NSDates [duplicate]

Answer 1

I needed the number of days between two dates including the beginning day. e.g. days between 14-2-2012 and 16-2-2012 would produce a result of 3.

+ (NSInteger)daysBetween:(NSDate *)dt1 and:(NSDate *)dt2 {
        NSUInteger unitFlags = NSDayCalendarUnit;
        NSCalendar* calendar = [NSCalendar currentCalendar];
        NSDateComponents *components = [calendar components:unitFlags fromDate:dt1 toDate:dt2 options:0];
        NSInteger daysBetween = abs([components day]);
    return daysBetween+1;
}

Note that it doesn't matter in which order you provide the dates. It will always return a positive number.