成功登录后关闭javafx登录窗口

I have create JavaFX login window that after log in into main window the login window will be closed.

我创建了JavaFX登录窗口,登录到主窗口后,登录窗口将被关闭。

I use Platform.exit(); but it exit from entire application instead of login window.

我使用Platform.exit();但它退出整个应用程序而不是登录窗口。

I can't access to stage from controller class. I am using closeLogin() method below but it doesn't work for me. This is my LoginController class:

我无法访问控制器类的阶段。我正在使用下面的closeLogin()方法,但它对我不起作用。这是我的LoginController类:

public class LoginController implements Initializable {

    @FXML
    private TextField txt_username;
    @FXML
    private PasswordField txt_password;
    @FXML
    private Button btn_login;
    @FXML
    private Button btn_cancel;
    Stage stage1 = null;

    /**
     * Initializes the controller class.
     */
    @FXML
    private void btn_login(ActionEvent event) throws IOException, Exception {
        Parent root = FXMLLoader.load(getClass().getResource("Library.fxml"));
        Stage page1Stage = new Stage();
        page1Stage.setResizable(false);
        page1Stage.setTitle("Main Form ");
        Scene scene = new Scene(root);
        page1Stage.setScene(scene);
        /*

         Some codes

         */
        page1Stage.show();
        closeLogin();
    }

    public void closeLogin() {
        stage1 = (Stage) stage1.getScene().getWindow();
        stage1.close();
    }

    @FXML
    public void cancelButtonAction() {
        Platform.exit();
    }

    @Override
    public void initialize(URL url, ResourceBundle rb) {
        // TODO
    }

}

1 个解决方案

#1

Use close() of Stage. Platform.exit will terminate the JavaFX application.

使用Stage的close()。 Platform.exit将终止JavaFX应用程序。

loginWindow.close();

where loginWindow is the stage you want to close.

其中loginWindow是您要关闭的阶段。

Update

You can try to get instance of Stage from stage1 which has not been initialized yet. Using

您可以尝试从stage1获取尚未初始化的Stage实例。运用

stage1.getScene().getWindow();

should throw NullPointerException.

应该抛出NullPointerException。

Try getting an instance of Window from the TextField or the Button, which are already present on the scene graph.

尝试从TextField或Button获取Window的实例,这些实例已经存在于场景图中。

public void closeLogin() {
     stage1 = (Stage) btn_login.getScene().getWindow();
     stage1.close();
}

#1