iPhone Software from Satosoft

So, you want to either do some calculations using dates or you just want to break up the time into hours, minutes and seconds.??

This is easy to do, using the built-in NSDate class within Xcode. Prior to the 2.2.1 iPhone update, I used a different method, but this was ‘broken’ by the update, as once built it under 2.2.1 I had several build warnings, which was only resolved with the following code.

A pain I know, and it took a couple of hours to sort it out.

Anyway, here is the code;

	// Get the time
	NSCalendar *calendar= [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
	NSCalendarUnit unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
	NSDate *date = [NSDate date];
	NSDateComponents *dateComponents = [calendar components:unitFlags fromDate:date];

	// Turn the date into Integers
	NSInteger year = [dateComponents year];
	NSInteger month = [dateComponents month];
	NSInteger day = [dateComponents day];
	NSInteger hour = [dateComponents hour];
	NSInteger min = [dateComponents minute];
	NSInteger sec = [dateComponents second];

Once you have the different integer variables, you can perform your calculations as required!

I don’t find the Apple documentation all that great and it’s severely lacking on how to do this sort of thing…

Happy coding!

Cheers

Graham