问题
The title may be a bit vague, so allow me to define it a little better. I have a working piece of code (down below): a simple main menu for a game I am working on. Everything works well, except for the Start button.
What I want to be able to do is click the Start button, and have a new scene appear on the same stage (window). I do not want to see a new window open. I have talked with someone more experienced in Java, and they told me to create separate classes for the MenuFX and the GameFX. If that is the case, I would need to call some start or launch method on the GameFX class from the MenuFX class, correct? Is this the best approach, or would I want to keep all FX-related code in one class? Also, I should keep the same stage for all FX work, no?
This post shed some light on things, but I am not well-versed in some of the terms discussed- for instance, I still do not understand the concept of Root.
Also, this post talks about a similar application, but I am not using FXML or SceneBuilder... I do not know if any of it is relatable.
MenuFX.java - I have removed some of the working code, simply for brevity. You can see that all I need help with is tying the Start button to some functionality that makes a new empty scene.
/*
* This is simply working on the title screen.
*/
// Asssume all imports are correct
import java.everythingNeeded
public class MenuFX extends Application {
@Override
public void start (Stage primaryStage) {
// Make the window a set size...
primaryStage.setResizable(false);
// Create menu vbox and set the background image
VBox menuVBox = new VBox(30);
menuVBox.setBackground(new Background(new BackgroundImage(new
Image("image/bambooBG.jpg"), null, null, null, new BackgroundSize(45,
45, true, true, true, true))));
// Create start button
Button startButton = new Button("Start Game");
// TODO Some things...
// Need assistance here
// Create help button
Button helpButton = new Button("Help");
helpButton.setOnAction(e -> THINGS);
// Create music toggle button
ToggleButton musicButton = new ToggleButton("Music On/Off");
musicButton.setOnAction(e -> THINGS);
// Create credits button
Button creditsButton = new Button("Credits");
creditsButton.setOnAction(THINGS);
// Create exit button and set it to close the program when clicked
Button endButton = new Button("Exit Game");
endButton.setOnAction(e -> Platform.exit());
// Add all nodes to the vbox pane and center it all
// Must be in order from top to bottom
menuVBox.getChildren().addAll(startButton, helpButton, musicButton, creditsButton, endButton);
menuVBox.setAlignment(Pos.CENTER);
// New scene, place pane in it
Scene scene = new Scene(menuVBox, 630, 730);
// Place scene in stage
primaryStage.setTitle("-tiles-");
primaryStage.setScene(scene);
primaryStage.show();
}
// Needed to run JavaFX w/o the use of the command line
public static void main(String[] args) {
launch(args);
}
}
Restating: I want to click the Start button and have the currently open window change to an empty scene.
Here is a pastebin of the MenuFX class in its entirety: http://pastebin.com/n6XbQfhc
Thank you for any help,
Bagger
回答1:
The basic idea here is you would do something like:
public class GameFX {
private final BorderPane rootPane ; // or any other kind of pane, or Group...
public GameFX() {
rootPane = new BorderPane();
// build UI, register event handlers, etc etc
}
public Pane getRootPane() {
return rootPane ;
}
// other methods you may need to access, etc...
}
Now back in the MenuFX
class you would do
Button startButton = new Button("Start Game");
startButton.setOnAction(e -> {
GameFX game = new GameFX();
primaryStage.getScene().setRoot(game.getRootPane());
});
来源:https://stackoverflow.com/questions/42841930/javafx-new-scene-on-button-click