iOS get Current KeyWindow

UIWindowSceneKeyWindow.swift

extension UIApplication {
    public var currentKeyWindow: UIWindow? {
        if #available(iOS 13.0, *) {
            if let window = connectedScenes
                .filter({ $0.activationState == .foregroundActive })
                .map({ $0 as? UIWindowScene })
                .compactMap({ $0 })
                .first?.windows
                .filter({ $0.isKeyWindow }).first {
                return window
            }
        }
        
        if let window = UIApplication.shared.windows.filter({ $0.isKeyWindow }).first {
            return window
        } else {
            return nil
        }
    }
}