To get current Window UIApplication

extension UIApplication {
    var currentWindow: UIWindow? {
        connectedScenes
        .filter({$0.activationState == .foregroundActive})
        .map({$0 as? UIWindowScene})
        .compactMap({$0})
        .first?.windows
        .filter({$0.isKeyWindow}).first
    }
}

// How to use
if let window = UIApplication.shared.currentWindow { 
   // do whatever you want with window
}