Javafx 2.0 How-to Application.getParameters() in a Controller.java file
java, javafx-2
Solution
1. The most straightforward way is to save them in the app:
public class App extends Application {
public static void main(String[] args) { launch(); }
public static String parameters;
@Override
public void start(Stage primaryStage) throws Exception {
parameters = getParameters().getNamed().toString();
Parent root = FXMLLoader.load(getClass().getResource("MyView.fxml"));
final Scene scene = new javafx.scene.Scene(root);
primaryStage.setScene(scene);
primaryStage.show();
}
}
and read them in the controller:
public class MyController implements Initializable {
@Override
public void initialize(URL url, ResourceBundle rb) {
System.out.println(App.parameters);
}
2. A bit more complex (and better in general) approaches are described in the next answers:
- Passing Parameters JavaFX FXML
- Multiple FXML with Controllers, share object
Problem
Considering the following sample. How to access to arguments/parameters of the application in the controller? Thank you. NB: I've tried to mix App.java and MyController.java in only one Class file, but didn't help. App.java (simplified): ``` public class App extends Application { public static void main(String[] args) { Application.launch(App.class, args); } @Override public void start(Stage primaryStage) throws Exception { // output arguments in console System.out.println(getParameters().getNamed().toString()); Parent root = FXMLLoader.load(getClass().getResource("MyView.fxml")); final Scene scene = new javafx.scene.Scene(root); primaryStage.setScene(scene); primaryStage.show(); } } ``` MyController.java (simplified): ``` public class MyController implements Initializable { @Override public void initialize(URL url, ResourceBundle rb) { // HOW TO getParameters() HERE ? } @FXML private Button myButton; @FXML private void my_Action(ActionEvent event) { // HOW TO getParameters() HERE ? } } ``` MyView.fxml (simplified): ``` <AnchorPane fx:id="root" fx:controller="mainpackage.MyController"> <children> <Button fx:id="myButton" onAction="#my_Action" text="Start" /> </children> </AnchorPane> ```