我正在用libgdx和java做我的第一个游戏。
我创建了两个游戏屏幕，菜单屏幕有播放按钮和退出按钮。我想玩游戏时，我点击播放按钮，一切似乎都很好，在menuscreen。但在gamescreen中，当我点击play按钮的同一位置时，游戏又开始了。同样的事情也发生在退出按钮上：如果我在放置退出按钮的地方单击，游戏将退出。
有人能帮我解决这个问题吗？如果我的英语和描述不好，谢谢你，对不起。
菜单屏幕类：

public class GameMenuScreen extends InputAdapter implements Screen {

BommanGame game;

Stage menuStage;

Texture backgroundTexture;
TextButton playButton;
TextButton exitButton;

public GameMenuScreen(final BommanGame game) {
    this.game = game;
    menuStage = new Stage(new ScreenViewport());

    backgroundTexture = new Texture(Gdx.files.internal("ui/img/background.png"));

    playButton = new TextButton("Play", game.buttonStyle);
    playButton.setPosition(380, 200);
    playButton.addListener(new InputListener() {
        @Override
        public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
            game.setScreen(new GamePlayScreen(game));
        }
        @Override
        public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {
            return true;
        }
    });

    exitButton = new TextButton("Exit", game.buttonStyle);
    exitButton.setPosition(380, 126);
    exitButton.addListener(new InputListener() {
        @Override
        public void touchUp(InputEvent event, float x, float y, int pointer, int button) {
            Gdx.app.exit();
        }
        @Override
        public boolean touchDown (InputEvent event, float x, float y, int pointer, int button) {
            return true;
        }
    });

    menuStage.addActor(playButton);
    menuStage.addActor(exitButton);

    Gdx.input.setInputProcessor(menuStage);
}

@Override
public void render(float delta) {
    Gdx.gl.glClearColor(0, 0, 0, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

    game.spriteBatch.begin();
    game.spriteBatch.draw(backgroundTexture, 0, 0);
    game.spriteBatch.end();

    menuStage.act();
    menuStage.draw();
}

@Override
public void dispose() {
    game.spriteBatch.dispose();
    backgroundTexture.dispose();
    menuStage.dispose();
}

游戏屏幕类：

public class GamePlayScreen implements Screen {

    BommanGame game;

    private float elapsedTime = 0;

    /*game components*/

    public GamePlayScreen(BommanGame game) {
        this.game = game;
        /*game component constructors*/

    }

    @Override
    public void render(float delta) {
        Gdx.gl.glClearColor(0, 0, 0, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

        elapsedTime += Gdx.graphics.getDeltaTime();

        game.spriteBatch.begin();
        /*render game components*/
        game.spriteBatch.end();
    }

    @Override
    public void dispose() {
        game.spriteBatch.dispose();
    }
}