LibGDX ButtonGroup 控制可以按下多少个按钮

Question

我对 LibGDX 有点陌生，想知道如何控制一次可以有多少个按钮处于关闭状态。我想用这些按钮完成的想法是：只要我的手指碰到一个，它就会被按下，一次只能按下一个，如果我的一个手指在一个按钮上按下它，另一个手指按下另一个按钮，最初按下的按钮会返回到其向上状态，再次按下该按钮的唯一方法是松开手指并再次按下它。

无论如何，这是我的代码。任何帮助将不胜感激，谢谢。

public MenuStateTest(GameStateManager gsm) {
    super(gsm);
    cam.setToOrtho(false, MyGame.WIDTH, MyGame.HEIGHT);

    fitViewport = new FitViewport(MyGame.WIDTH, MyGame.HEIGHT);

    stage = new Stage(fitViewport);
    Gdx.input.setInputProcessor(stage);
    font = new BitmapFont();
    skin = new Skin();

    buttonAtlas = new TextureAtlas("buttonTest.pack");
    skin.addRegions(buttonAtlas);
    textButtonStyle = new TextButton.TextButtonStyle();
    textButtonStyle.font = font;
    textButtonStyle.up = skin.getDrawable("1BBlock");
    textButtonStyle.down = skin.getDrawable("T1BBlock");
    button = new TextButton("", textButtonStyle);
    stage.addActor(button);
    button.setPosition(20, 200);
    button.getStyle().checked = button.getStyle().down;

    button2Atlas = new TextureAtlas("Button2Test.pack");
    skin.addRegions(button2Atlas);
    textButtonStyle = new TextButton.TextButtonStyle();
    textButtonStyle.font = font;
    textButtonStyle.up = skin.getDrawable("2BBlock");
    textButtonStyle.down = skin.getDrawable("T2BBlock");
    button2 = new TextButton("", textButtonStyle);
    stage.addActor(button2);
    button2.setPosition(175, 200);
    button2.getStyle().checked = button2.getStyle().down;

    button3Atlas = new TextureAtlas("Button3Test.pack");
    skin.addRegions(button3Atlas);
    textButtonStyle = new TextButton.TextButtonStyle();
    textButtonStyle.font = font;
    textButtonStyle.up = skin.getDrawable("3BBlock");
    textButtonStyle.down = skin.getDrawable("T3BBlock");
    button3 = new TextButton("", textButtonStyle);
    stage.addActor(button3);
    button3.setPosition(330, 200);
    button3.getStyle().checked = button3.getStyle().down;

    ButtonGroup buttons = new ButtonGroup(button1, button2, button3);
    buttons.setMaxCheckCount(1);
}

@Override
protected void handleInput() {

}

@Override
protected void update(float dt) {
    stage.getViewport().update(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
}

Answer 1

public MenuStateTest(GameStateManager gsm) {
    super(gsm);
    cam.setToOrtho(false, MyGame.WIDTH, MyGame.HEIGHT);

    fitViewport = new FitViewport(MyGame.WIDTH, MyGame.HEIGHT);

    stage = new Stage(fitViewport);
    Gdx.input.setInputProcessor(stage);
    font = new BitmapFont();
    skin = new Skin();

    buttonAtlas = new TextureAtlas("buttonTest.pack");
    skin.addRegions(buttonAtlas);
    textButtonStyle = new TextButton.TextButtonStyle();
    textButtonStyle.font = font;
    textButtonStyle.up = skin.getDrawable("1BBlock");
    textButtonStyle.checked = skin.getDrawable("T1BBlock");
    button = new TextButton("", textButtonStyle);
    stage.addActor(button);
    button.setPosition(20, 200);

    button2Atlas = new TextureAtlas("Button2Test.pack");
    skin.addRegions(button2Atlas);
    textButtonStyle = new TextButton.TextButtonStyle();
    textButtonStyle.font = font;
    textButtonStyle.up = skin.getDrawable("2BBlock");
    textButtonStyle.checked = skin.getDrawable("T2BBlock");
    button2 = new TextButton("", textButtonStyle);
    stage.addActor(button2);
    button2.setPosition(175, 200);

    button3Atlas = new TextureAtlas("Button3Test.pack");
    skin.addRegions(button3Atlas);
    textButtonStyle = new TextButton.TextButtonStyle();
    textButtonStyle.font = font;
    textButtonStyle.up = skin.getDrawable("3BBlock");
    textButtonStyle.checked = skin.getDrawable("T3BBlock");
    button3 = new TextButton("", textButtonStyle);
    stage.addActor(button3);
    button3.setPosition(330, 200);

    ButtonGroup buttons = new ButtonGroup(button1, button2, button3);
    buttons.setMaxCheckCount(1);
}

@Override
protected void handleInput() {

}

@Override
protected void update(float dt) {
    stage.getViewport().update(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
}