iOS13 keyWindow

let window = UIApplication.shared.keyWindow

提示keyWindow已经被iOS 13.0废弃

'keyWindow' was deprecated in iOS 13.0: Should not be used for applications that support multiple scenes as it returns a key window across all connected scenes

解决办法：

let window = UIApplication.shared.windows
   //.filter({ $0.isKeyWindow })
   .last

var window: UIWindow? = nil
if #available(iOS 13.0, *) {
    window = UIApplication.shared.connectedScenes
        .filter({ $0.activationState == .foregroundActive })
        .map({ $0 as? UIWindowScene })
        .compactMap({ $0 })
        .last?.windows
        //.filter({ $0.isKeyWindow })
        .last
} else {
    window = UIApplication.shared.keyWindow
}