What's the better way to addObserver/removeObserver with NSNotificationCenter?

Question

I used to addObserver in viewDidLoad: and removeObserver in dealloc:. Code:

- (void)viewDidLoad
{
    [su         


        

Answer 1

Don't forget NSKeyValueObservingOptionInitial. I use it with viewWillAppear/viewWillDisappear so my UI is always up-do-date, even if I hide that view controller, saving resources because I will not update it until is shown again.