How to find topmost view controller on iOS

Question

I\'ve run into a couple of cases now where it would be convenient to be able to find the \"topmost\" view controller (the one responsible for the current view), but haven\'t

Answer 1

I think you need a combination of the accepted answer and @fishstix's

+ (UIViewController*) topMostController
{
    UIViewController *topController = [UIApplication sharedApplication].keyWindow.rootViewController;

    while (topController.presentedViewController) {
        topController = topController.presentedViewController;
    }

    return topController;
}

Swift 3.0+

func topMostController() -> UIViewController? {
    guard let window = UIApplication.shared.keyWindow, let rootViewController = window.rootViewController else {
        return nil
    }

    var topController = rootViewController

    while let newTopController = topController.presentedViewController {
        topController = newTopController
    }

    return topController
}