如何在javafx中重置效果？

Question

我用登录名和密码启动了主窗口（classmain）和模式窗口（classLogin）。而主舞台=

root.setEffect(new GaussianBlur()); 

如果用户有效，则关闭模式窗口。如何重置主阶段的效果

root.setEffect(new GaussianBlur());?

谢谢主要类别：

公共类主应用程序扩展{

Login loginWindow = new Login();

public static Stage windowMain;

@Override
public void start(Stage primaryStage) throws Exception {
    Parent root = FXMLLoader.load(getClass().getResource("/views/main.fxml"));
    Scene scene = new Scene(root);
    scene.getStylesheets().add(this.getClass().getResource("/style/main.css").toExternalForm());
    primaryStage.setScene(scene);
    primaryStage.show();
    windowMain = primaryStage;
    root.setEffect(new GaussianBlur());
    loginWindow.display();
}

public static void main(String[] args) {
    launch(args);
}

}

登录类：

公共类登录{

public void display() throws IOException {
    Stage window = new Stage();
    window.initModality(Modality.APPLICATION_MODAL);
    window.initStyle(StageStyle.UNDECORATED);
    auth.setTranslateY(40);
    auth.setTranslateX(100);
    auth.getStyleClass().add("auth");
    TextField username = new TextField();
    username.setTranslateY(70);
    username.setTranslateX(75);
    PasswordField password = new PasswordField();
    password.setTranslateY(100);
    password.setTranslateX(75);
    Button loginBtn = new Button();
    loginBtn.getStyleClass().add("loginBtn");
    loginBtn.setStyle("-fx-cursor: hand");
    loginBtn.setTranslateX(115);
    loginBtn.setTranslateY(155);

    loginBtn.setOnAction(new EventHandler<ActionEvent>() {
        @Override
        public void handle(ActionEvent event) {
            if (username.getText().equals("admin") && password.getText().equals("admin")) {
                window.close();
            } else {
                System.out.println("Error");
            }
        }
    });

    Pane layout = new Pane();
    layout.getChildren().addAll(username, password, loginBtn);
    Scene scene = new Scene(layout);
    layout.getStylesheets().add(this.getClass().getResource("/style/login.css").toExternalForm());

    username.setFocusTraversable(false);
    password.setFocusTraversable(false);

    window.setScene(scene);
    window.setAlwaysOnTop(true);
    window.showAndWait();
}

}

Answer 1

effect的默认值为空，因此

root.setEffect(null);

应该管用。由于您在登录窗口中使用了show And等待（），所以您只需要

@Override
public void start(Stage primaryStage) throws Exception {
    Parent root = FXMLLoader.load(getClass().getResource("/views/main.fxml"));
    Scene scene = new Scene(root);
    scene.getStylesheets().add(this.getClass().getResource("/style/main.css").toExternalForm());
    primaryStage.setScene(scene);
    primaryStage.show();
    windowMain = primaryStage;
    root.setEffect(new GaussianBlur());
    loginWindow.display();
    root.setEffect(null);
}