Get top most UIViewController

Question

I can\'t seem to get the top most UIViewController without access to a UINavigationController. Here is what I have so far:

UIApplic         


        

Answer 1

  var topViewController: UIViewController? {
        guard var topViewController = UIApplication.shared.keyWindow?.rootViewController else { return nil }
        while let presentedViewController = topViewController.presentedViewController {
            topViewController = presentedViewController
        }
        return topViewController
    }