如何在Playgrounds中使用UIAlertController？

Question

在操场上使用UIAlertController

我尝试在iPad的Playgrounds中创建一个对话框

let Alert = UIAlertController(title: "Eingabe", message: "Ihre Texteingabe:", preferredStyle: UIAlertController.Style.alert)

Alert.addAction(UIAlertAction(title: "Swift", style: UIAlertAction.Style.default, handler: { (_) in NSLog("klar!")}))

present(Alert, animated: true, completion: nil)

我在最后一行出现错误