Is NSNotificationCenter removeObserver in ARC needed? [duplicate]

Question

Does adding an observer increase the retain count of an object? If yes, does ARC handle the removing of this observer too? If not, where should I remove the observer?

Answer 1

You should explicitly remove the observer even you use ARC. Create a dealloc method and remove there..

-(void)dealloc {     [[NSNotificationCenter defaultCenter] removeObserver:self]; } 

If you see the method you don't need to call [super dealloc]; here, only the method without super dealloc needed.

UPDATE for Swift

You can remove observer in deinit method if you are writing code in swift.

deinit {         NSNotificationCenter.defaultCenter().removeObserver(self)        }