Difference in hours between two NSDate
Referring to this answer of a mostly similar question a better and Apple approved way would be using the NSCalendar methods like this:
- (NSInteger)hoursBetween:(NSDate *)firstDate and:(NSDate *)secondDate { NSUInteger unitFlags = NSCalendarUnitHour; NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar]; NSDateComponents *components = [calendar components:unitFlags fromDate:firstDate toDate:secondDate options:0]; return [components hour]+1;}If you target iOS 8 or later use NSCalendarIdentifierGregorian instead of the deprecated NSGregorianCalendar.
I think difference should be in int value...
NSLog(@"hoursBetweenDates: %d", hoursBetweenDates);Hope, this will help you..
NSInteger can't be shown by using
NSLog(@"%@", hoursBetweenDates);instead use:
NSLog(@"%d", hoursBetweenDates); If unsure what to use look in the Apple Developer Docs:http://developer.apple.com/library/mac/#documentation/Cocoa/Conceptual/Strings/Articles/formatSpecifiers.html#//apple_ref/doc/uid/TP40004265