UIAlertAction handler not called across UIWindows on iOS 9

Question

I am attempting to use a dedicated UIWindow for presenting UIAlertControllers. Everything was going pretty well until I realized that the handlers on the UIAlertActions attached to the UIAlertControllers were not being fired if they were presented by a controller on this other UIWindow.

If I present the UIAlertController from any viewController on the main window the handlers are fired, if I present it from the rootViewController of the alert window the handlers are not fired.

Any hints as to what I may be experiencing here? Thanks!

Edit: Test Project illustrating the problem.

Solved: I forgot to call the completion block in my override of dismissViewControllerAnimated:completion: in my alertWindowRootViewController subclass.

Answer 1

So it turns out that I was forgetting to call the completion block in my override of dismissViewControllerAnimated:completion. Doh!

I have updated my Test Project to include the fix in hopes that this can be valuable to someone else.

I do like my solution more than Dylan Betterman's Solution since mine keeps a permanent window around that isn't associated with the lifecycle of the UIAlertController. This means that you are allowed to keep strong pointers to the alert controllers unlike Dylan's solution.