Subtract 7 days from current date

code:

NSDate *currentDate = [NSDate date];NSDateComponents *dateComponents = [[NSDateComponents alloc] init];[dateComponents setDay:-7];NSDate *sevenDaysAgo = [[NSCalendar currentCalendar] dateByAddingComponents:dateComponents toDate:currentDate options:0];NSLog(@"\ncurrentDate: %@\nseven days ago: %@", currentDate, sevenDaysAgo);[dateComponents release];

output:

currentDate: 2012-04-22 12:53:45 +0000seven days ago: 2012-04-15 12:53:45 +0000

And I'm fully agree with JeremyP.

BR.
Eugene

If you're running at least iOS 8 or OS X 10.9, there's an even cleaner way:

NSDate *sevenDaysAgo = [[NSCalendar currentCalendar] dateByAddingUnit:NSCalendarUnitDay                                                                value:-7                                                               toDate:[NSDate date]                                                              options:0];

Or, with Swift 2:

let sevenDaysAgo = NSCalendar.currentCalendar().dateByAddingUnit(.Day, value: -7,    toDate: NSDate(), options: NSCalendarOptions(rawValue: 0))

And with Swift 3 and up it gets even more compact:

let sevenDaysAgo = Calendar.current.date(byAdding: .day, value: -7, to: Date())

use dateByAddingTimeInterval method:

NSDate *now = [NSDate date];NSDate *sevenDaysAgo = [now dateByAddingTimeInterval:-7*24*60*60];NSLog(@"7 days ago: %@", sevenDaysAgo);

output:

7 days ago: 2012-04-11 11:35:38 +0000

Hope it helps