Update to Scene Changing

Update to Scene Changing

to change your button handlers to use GameManager.changeScenereplace;

exampleButton.setOnAction(this::handleButton);
...
private void handleButton(ActionEvent event) {
		Stage primaryStage = (Stage) exmapleButton.getScene().getWindow();
		Parent exampleScreen = null;
		try {
			// getResource() should look in src/main/resources
			exampleScreen = FXMLLoader.load(getClass().getResource("/fxml/NewScreen.fxml"));
		} catch (IOException e) {
			logger.debug("IO Exception when loading NewScreen.fxml");
			System.exit(1);
		}
		Scene scene = new Scene(exampleScreen);
		primaryStage.setScene(scene);
	}

with

exampleButton.setOnAction(e -> GameManager.changeScene(exampleButton, "MenuScreen.fxml"));

Extra

GameManager.changeScene is static so you do not need to get an instance of GameManager.

Parameters

changeScene takes a JavaFX Control object and a String of the resource name.

The resource name needs to be the name of fxml file in 'resources/fxml/' including .fxml file extension, DO NOT include the full path to the file.