Is there a way to detect how many modal view controllers are being presented?

Question

In iOS, presenting a modalViewController is super easy:

[self presentModalViewController:controller animated:YES];

Or:

[[[[[UIApplication sharedApplication] delegate] window] rootViewController] presentModalViewController:controller animated:YES];

Within a modalViewController(such as navigationController), you can present a modalViewController again. Is there a way to detect how many modal view controllers are being presented? Otherwise maybe hooking the presentModalViewController:animated: and dismissModalViewControllerAnimated: would be a good idea? Thanks!

What's the goal? Maybe if you tell us the point of knowing that, we can help you. — Rui Peres, Dec 19 '12 at 08:09

score 2 · Answer 1 · edited May 23 '17 at 11:43

2

Check this question:

Is it possible to determine whether ViewController is presented as Modal?

You can use that code to "climb up" your views until you find a view that is not a modal view controller. Like:

while (isModal)
{
    currentViewController = currentViewController.presentingViewController;

    ...
}

edited May 23 '17 at 11:43

Community

1
1

answered Dec 19 '12 at 08:27

jimpic

5,360
2
28
37

score 0 · Accepted Answer · answered Oct 16 '13 at 02:11

I think I found a way to find the top most viewController, which should help resolving this question:

+ (UIViewController*)getTopMostViewController {
    UIWindow * window = [UIApplication sharedApplication].keyWindow;
    UIViewController *appRootViewController = window.rootViewController;
    UIViewController *topViewController = appRootViewController;
    while (topViewController.modalViewController != nil) {
        topViewController = topViewController.modalViewController;
    }
    return topViewController;

}

Is there a way to detect how many modal view controllers are being presented?

2 Answers2