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

Try overriding willMoveToParentViewController: (instead of viewWillDisappear:) in your custom subclass of UIViewController.

Called just before the view controller is added or removed from a container view controller.

- (void)willMoveToParentViewController:(UIViewController *)parent
{
    [super willMoveToParentViewController:parent];
    if (!parent) {
        // `self` is about to get popped.
    }
}