如何通过单击按钮关闭Java窗口 - JavaFX项目 [英] How to close a java window with a button click - JavaFX Project

问题描述

我创建了一个JavaFX项目，并为java Scene Builder中的第一个登录框架创建了GUI。登录成功后，必须关闭登录框，并且必须显示下一帧（主程序框）。我可以让新框架出现，但我无法关闭登录框架。我试过像 dispose（）之类的东西，但没有任何作用。下面是主类的代码：

I made a JavaFX project and created the GUI for the first-login frame in the java Scene Builder. When the login is successful, the login frame must be closed and the next frame must be visible (main program frame). I can make the new frame appear, but I can't make the login frame closed. I tried stuff like dispose() but nothing works. Below is the code for the main class:

public class KuberComm extends Application {

    @Override
    public void start(Stage stage) throws Exception {
        Parent root = FXMLLoader.load(getClass().getResource("FXMLDocument.fxml"));

        Scene scene = new Scene(root);
        stage.setResizable(false);
        stage.setTitle("Login to KuberComm");
        stage.setScene(scene);

        stage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }

}

登录按钮的处理程序是位于另一个类（NetBeans IDE生成的控制器类）中。我无法弄清楚框架的名称是什么，以便在控制器类中使用它。

The handler for the login button is located in another class (controller class made by the NetBeans IDE). I can't figure out what the frame's name is in order to use it in the controller class.

任何帮助将不胜感激！

推荐答案

在控制器类中为您的按钮命名：

give your button a name in the controller class:

@FXML
public Button closeButton;

并添加此方法：

@FXML
public void handleCloseButtonAction(ActionEvent event) {
    Stage stage = (Stage) closeButton.getScene().getWindow();
    stage.close();
}

在FXML中，您需要引用按钮名称和方法来调用onAction：

In your FXML you need a reference to the button name and the method to call onAction:

<Button fx:id="closeButton" cancelButton="true" layoutX="350.0" layoutY="767.0" mnemonicParsing="false" onAction="#handleCloseButtonAction" prefWidth="100.0" text="Close" />

这将关闭此按钮所在的阶段。

This would close the stage that this button is on.

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