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

iOS 4 introduced the rootViewController property on UIWindow:

[UIApplication sharedApplication].keyWindow.rootViewController;

You'll need to set it yourself after you create the view controller though.