[objective-c] Objective-C : NSNotification에 대한 관찰자를 제거 할 위치는 어디입니까?

참고 : 이것은 100 % 테스트 및 작동되었습니다.

빠른

override func viewWillDisappear(animated: Bool){
    super.viewWillDisappear(animated)

    if self.navigationController!.viewControllers.contains(self) == false  //any other hierarchy compare if it contains self or not
    {
        // the view has been removed from the navigation stack or hierarchy, back is probably the cause
        // this will be slow with a large stack however.

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

PresentedViewController

override func viewWillDisappear(animated: Bool){
    super.viewWillDisappear(animated)

    if self.isBeingDismissed()  //presented view controller
    {
        // remove observer here
        NSNotificationCenter.defaultCenter().removeObserver(self)
    }
}

목표 -C

에서 iOS 6.0 > version의 더 나은 것은에서 관찰자를 제거하기 위해 viewWillDisappear같은 viewDidUnload방법이 사용되지 않습니다.

 [[NSNotificationCenter defaultCenter] removeObserver:observerObjectHere];

많은 배 더있다 remove observer뷰가 제거 된 경우 navigation stack or hierarchy.

- (void)viewWillDisappear:(BOOL)animated{
 if (![[self.navigationController viewControllers] containsObject: self]) //any other hierarchy compare if it contains self or not
    {
        // the view has been removed from the navigation stack or hierarchy, back is probably the cause
        // this will be slow with a large stack however.

        [[NSNotificationCenter defaultCenter] removeObserver:observerObjectHere];
    }
}

PresentedViewController

- (void)viewWillDisappear:(BOOL)animated{
    if ([self isBeingDismissed] == YES) ///presented view controller
    {
        // remove observer here
        [[NSNotificationCenter defaultCenter] removeObserver:observerObjectHere];
    }
}

답변

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

deinit {
    ...
}