Question

I have a custom navigation implemented but I have a problem.

After I pop a UIViewController, I manually call viewWillDisappear, but for some reason it gets called again when I call removeFromSuperview for that UIViewController's UIView.

How can I stop that from happening? This happens for iOS 6, I am sure it doesn’t for iOS 4, I haven’t tested for iOS 5. I am already using:

 - (BOOL)automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers {
     return NO;
}

but it doesn’t help.

I am not using dismissViewControllerAnimated. I have implemented a custom Navigation Controller, I use my own stack, and “Push” and “Pop” the UIViewControllers by animating their view on and offscreen, and I call viewWillAppear and viewWillDisappear manually. The problem is that after I “Pop” a UIViewController off screen, when I call [currentViewController.view removeFromSuperView] the viewWillDisappear method gets called, and I don’t want that, as I already called it.

Any help would be appreciated.

Answer 1

Ok, I found a solution. The problem was that I was calling [controller.view removeFromSuperview] and I noticed in the call stack that [UIViewcontroller _setViewState:animated] was called. So I did a small hack:

UIView *view = controller.view;
controller.view = nil;
[view removeFromSuperView];
[controller release];

Now, viewWillDisappear isn’t called anymore when call [view removeFromSuperview]. Hope this will help someone.