java - 如何在 JavaFX 中获取阶段的关闭事件？

Question

在 JavaFX 中，如果用户单击阶段的关闭按钮 (X)(最右上角的十字)，我如何获取事件？

我希望我的应用程序在窗口关闭时打印一条调试消息。 (System.out.println("应用程序通过点击关闭按钮关闭(X)"))

@Override
   public void start(Stage primaryStage) {
        StackPane root = new StackPane();
       root.getChildren().add(btn);
       Scene scene = new Scene(root, 300, 250);
       primaryStage.setTitle("Hello World!");
       primaryStage.setScene(scene);
       primaryStage.show();

       // Any Event Handler
       //{
       System.out.println("Application(primaryStage) Closed by click to Close Button(X)");
       //}
   }

Answer 1

我得到了这个问题的答案

stage.setOnHiding(new EventHandler<WindowEvent>() {

         @Override
         public void handle(WindowEvent event) {
             Platform.runLater(new Runnable() {

                 @Override
                 public void run() {
                     System.out.println("Application Closed by click to Close Button(X)");
                     System.exit(0);
                 }
             });
         }
     });