How to present UIAlertController from SKScene

Question

I\'m working in Spritekit and I\'m trying to present a UIAlertController from my SKScene, but I am having trouble doing it. I\'ve watched several tutorials but none of the UIAle

Answer 1

The SKScene instance can't invoke presentViewController(_:animated:completion) because it is not a subclass of UIViewController. However, if you rewrite as such, your alert will launch:

self.view?.window?.rootViewController?.presentViewController(alert, animated: true, completion: nil)

ps: there will be a warning though that Attempt to present on which is already presenting. If anyone knows how to eradicate this warning, that will be great.

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[Updated 11 August 2016]

To eradicate the aforementioned warning, check if the rootViewController has presented a view controller:

 let vc = self.view?.window?.rootViewController
 if vc.presentedViewController == nil {
    vc.presentViewController(alert, animated: true, completion: nil)
 }