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I have a UIAlertView. When the user taps a button in the alert view I want to show a new UIViewController.

In order to achieve this I need to know which view controller is currently visible on screen because that particular view controller is the right one to present the new view controller.

The problem is that I have a complex hierarchy of view controllers in my app including a UINavigationController and a UITabBarController (among others). So I cannot simply use self.visibleViewController to get the currently visible view controller.

I have found a possible solution on Stackoverflow but I would like to find a neater solution without having to dig through the whole view controller stack.

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    I'm not sure if this works or not, I haven't tested it but if you're creating a UIAlertView and presenting it within the last visible UIViewController, doesn't that mean the "delegate" of that UIAlertView is your last visible view controller? Commented Aug 19, 2013 at 12:17
  • I am a bit confused. You must have set the code for UIAlertView somewhere. On which ViewController you have set that? Commented Aug 19, 2013 at 12:21
  • The delegate of a UIAlertView is not necessarily a UIViewController. It can be any class that conforms to the UIAlertViewDelegate protocol. In my case the delegate is actually a UIViewController but it is a specific one that is not always visible. Commented Aug 19, 2013 at 12:28
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    @Puneet: A UIAlertView is not necessarily presented by a specific UIViewController. Instead, I use [alertView show]. I can call that method from anywhere in my code because a UIAlertView always creates its own window. Commented Aug 19, 2013 at 12:39

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UINavigationController has a property called topViewController. Maybe it helps you.

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I need a solution that is not dependent on the type of the view controller.

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