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>
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Answer
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: