Objective-C: Where to remove observer for NSNotification?

Question

I have an objective C class. In it, I created a init method and set up a NSNotification in it

//Set up NSNotification
[[NSNotificationCenter defaultCenter] a         


        

Answer 1

In my opinion, the following code makes no sense in ARC:

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

In iOS 6, there's also no sense in removing observers in viewDidUnload, because it has been deprecated now.

To sum up, I always do it in viewDidDisappear. However, it depends on your requirements also, just like @Dirk said.