Loading FXML from external controller on Java FX 2.2

Question

I'm currently recoding a small application from Swing to JavaFX, since it seemed like the easiest way to deploy what I currently have for web.

I can't seem to do something very simple, and I'm getting lost on the documentation and other posts:

Anyway, I have my main controller that calls the associated FXML file:

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

    Scene scene = new Scene(root);

    stage.setScene(scene);
    stage.show();
}

Now, from Login.fxml, I have a button and I want that button to open another FXML file. I can get the button to be sucesfully load the event but I tried many things and I can't get it to work. I'm trying something like this:

private void handleButtonAction(ActionEvent event){

    FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("GeneradorBases.fxml"));

   // fxmlLoader.setRoot(this); 
  //  fxmlLoader.setController(this);

    try {
        fxmlLoader.load(); 

    }
    catch (IOException e){
       throw new RuntimeException(e); 
    }
}

I tried to follow an example I saw here on Stackoverflow. Basically the .setRoot and .setController crash the application. Even the .load() does that too.

Any advice on how I can make this work?

Is it JVM crash or some kind of exception? Please, provide more data: stack trace, fx version, os, platform. — Sergei Grinev
– Sergei Grinev, Commented Nov 5, 2012 at 1:02
It's an exception. java.lang.IllegalAccessException: Class javafx.fxml.FXMLLoader$ValueElement can not access a member of class packet.OtherControllerController with modifiers "private" I am using JavaFX 2.2, my OS is Windows 7 — Dynelight
– Dynelight, Commented Nov 5, 2012 at 2:27
I had a ListView on the other FXML file that was listed as private. I changed it to public. I tried again, and I get no error whatsoever, but the new FXML does not show. — Dynelight
– Dynelight, Commented Nov 5, 2012 at 2:34

Sergei Grinev · Accepted Answer · 2012-11-06 07:39:12Z

3

Given exception you listed you need to set all fields marked with @FXML and class packet.OtherControllerController public.

Update: you another problem is that you don't assign result of FXML load to anything.

public class FirstController implements Initializable {

  @FXML
  public void handleButtonAction(ActionEvent event) throws Exception{
    Node node = (Node) event.getSource();
    Stage stage = (Stage) node.getScene().getWindow();
    Scene scene = stage.getScene();

    FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("Second.fxml"));
    Parent root = (Parent) fxmlLoader.load();          

    scene.setRoot(root);
  }
}

See tutorial for extended example: http://docs.oracle.com/javafx/2/get_started/fxml_tutorial.htm

edited Nov 6, 2012 at 7:39

answered Nov 5, 2012 at 11:22

Sergei Grinev

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3 Comments

Dynelight Over a year ago

Hi Sergey. I tried that. That class only has one attribute (The ListView), and the initialize. They're all set as public. The class is set as public too. That solves the exception but it doesn't make my FXML load. Do I need to somehow toy around with the setController() and setRoot() methods before I invoke load()?

Dynelight Over a year ago

I did some edits to your reply. I was wondering if you didn't approve them?

Sergei Grinev Over a year ago

it wasn't me but other reviewers. I think that edit is useful and extended an answer with you example, thanks!

zhujik · Accepted Answer · 2012-11-05 08:34:46Z

1

Your solution does nothing with the node loaded by fxmlLoader.load(). In order to show the loaded FXML file, you need to pass the returned value somehow to your main controller (or another part of the code that should manage the stage or scene) and set it as the new root (or e.g. child of a pane in which it should be shown).

answered Nov 5, 2012 at 8:34

zhujik

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1 Comment

Dynelight Over a year ago

Do you have an example somewhere?

Sergiu · Accepted Answer · 2014-02-10 15:32:52Z

1

If presented solutions don't will be helpful, you can try following code (for me it is work):

final FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/fxml/page.fxml"));
      Parent root = (Parent) fxmlLoader.load();

      Scene nscene = new Scene(root);
      Stage tStatge = new Stage();
      tStatge.setScene(nscene);
      tStatge.show();

edited Feb 10, 2014 at 15:32

answered Feb 10, 2014 at 14:25

Sergiu

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