Get difference between two dates?

Question

I have two dates in 24 hours formate like (dd-MMM-yyyy HH:mm). I want to get a difference between these two dates.

My Code : This is getting only dates, I want a number

Answer 1

NSDateComponentsFormatter can do that

NSTimeInterval secondsBetween = [date2 timeIntervalSinceDate:date1];
NSDateComponentsFormatter *formatter = [[NSDateComponentsFormatter alloc] init];
formatter.allowedUnits = NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute;
formatter.unitsStyle = NSDateComponentsFormatterUnitsStyleFull;
NSLog(@"%@", [formatter stringFromTimeInterval:secondsBetween]);

See NSDateComponentsFormatterUnitsStyle for other styles.