Checking if a UIViewController is about to get Popped from a navigation stack?

Question

I need to know when my view controller is about to get popped from a nav stack so I can perform an action.

I can\'t use -viewWillDisappear, because that gets called

Answer 1

You can catch it here.

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {

    if (viewController == YourAboutToAppearController) {
            // do something
    }
}

This will fire just before the display of the new View. Nobody's moved yet. I use all the time to do magic in front of the asinine NavigationController. You can set titles and button titles and do whatever there.