How to calculate time difference in minutes between two dates in iOS [duplicate]

Question

Possible Duplicate:
How to calculate time in hours between two dates in iOS

I am beginner to Objective-C, so I need your help in syntax making.

My problem goes like this:

I have 2 Strings, and I want to convert that into NSDate and then calculate the time difference between the dates in minutes.

How can I do this?

Answer 1

1. Use NSDateFormatter to convert the date strings into NSDate objects.
2. Call -[NSDate timeIntervalSinceDate:] to get the difference between the two dates in seconds.
3. Divide by 60 to get the difference in minutes.

Alternatively, you can use NSCalendar and NSDateComponents to calculate the difference in minutes for different calendars by using the components:fromDate:toDate:options: method.