You need to discover out what is yourCurrent/Topmostview controller in check out hierarchy and present her alert end it.

To discover out topmost check out controller use complying with code:

func getTopMostViewController() -> UIViewController? var topMostViewController = UIApplication.shared.keyWindow?.rootViewController while allow presentedViewController = topMostViewController?.presentedViewController topMostViewController = presentedViewController return topMostViewControllerAnd present your alert over topmost watch controller and also use main thread to existing an alert due to the fact that closures may have actually working on one more thread.

DispatchQueue.main.async getTopMostViewController()?.present(alertController, animated: true, completion: nil)

You are watching: Whose view is not in the window hierarchy!

answeredJun 2Aurelia Maja98.6k pointseditedJun 9by Aurelia Maja

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