Better way for Getting id of the clicked Object in JavaFX controller
Since fx:id is used to bind controls between FXML and Controller, this answer is taking into consideration that OP wants the id
of the controls when clicked.
import javafx.application.Application;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.CheckBox;
import javafx.scene.control.Control;
import javafx.scene.control.Label;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class IdForControlsOnClick extends Application{
@Override
public void start(Stage stage) throws Exception {
BorderPane borderPane = new BorderPane();
VBox vBox = new VBox(20);
borderPane.setCenter(vBox);
Button button = new Button("Hi");
button.setId("Button");
Label label = new Label("Label");
label.setId("Label");
CheckBox checkBox = new CheckBox();
checkBox.setId("CheckBox");
button.addEventHandler(MouseEvent.MOUSE_CLICKED, new MyEventHandler());
label.addEventHandler(MouseEvent.MOUSE_CLICKED, new MyEventHandler());
checkBox.addEventHandler(MouseEvent.MOUSE_CLICKED, new MyEventHandler());
vBox.getChildren().addAll(button, label, checkBox);
Scene scene = new Scene(borderPane, 200, 200);
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
launch(args);
}
private class MyEventHandler implements EventHandler<Event>{
@Override
public void handle(Event evt) {
System.out.println(((Control)evt.getSource()).getId());
}
}
}
I use this for getting the id of ImageView objects that all share the same event code. Here is a simple example using MouseEvent:
@FXML
private void selectImage(MouseEvent event)
{
String source1 = event.getSource().toString(); //yields complete string
String source2 = event.getPickResult().getIntersectedNode().getId(); //returns JUST the id of the object that was clicked
System.out.println("Full String: " + source1);
System.out.println("Just the id: " + source2);
System.out.println(" " + source2);
}
Here is the output in my situation, where I used SceneBuilder to assign the selectImage method to the 'On Mouse Pressed' event, then running the code and randomly clicking on three different ImageView objects:
Full String: ImageView[id=iv1, styleClass=image-view]
Just the id: iv1
Full String: ImageView[id=iv4, styleClass=image-view]
Just the id: iv4
Full String: ImageView[id=iv6, styleClass=image-view]
Just the id: iv6
I hope this helps someone. :-)