java - LibGDX 按钮无法识别点击（Stage + ChangeListener）

Question

编辑：第一个 Cemmentator “第二个”是对的。我忘了设置 Gdx.input.setInputProcessor(stage); - 现在一切正常。谢谢！

---

我的 Libgdx 按钮“返回”、“菜单”和“TryAgain”（将您带回另一个屏幕）不起作用。

我研究了我能找到的所有解决方案，但它们仍然无法正常工作。我还在我的其他屏幕中使用按钮和阶段，它们都像魅力一样工作。

你们看到代码中有任何错误吗？CreateStage()创建舞台并通过渲染方法显示它们。

任何帮助是极大的赞赏！

public class HighscoreScreen extends ScreenAdapter {

private final GameClass game;
private int score;
private String name;
private boolean menuView;

private SpriteBatch batch;
private BitmapFont scoreFont;

private String[] players;
private int[] scores;
private int counter = 0;
private OrthographicCamera camera;
private Stage stage;
private ScreenViewport v;

public HighscoreScreen (GameClass game, OrthographicCamera camera, int score, String name) {
    this.camera = camera;
    this.game = game;
    this.score = score;
    this.name = name;
    this.batch = new SpriteBatch();
    menuView = false;
    batch = new SpriteBatch();

    scoreFont = new BitmapFont(Gdx.files.internal("Fonts/score.fnt"),
            Gdx.files.internal("Fonts/score.png"),false);
    createStage();
}

public HighscoreScreen (GameClass game, OrthographicCamera camera){
    this.game = game;
    this.camera = camera;
    this.batch = new SpriteBatch();
    menuView = true;

    scoreFont = new BitmapFont(Gdx.files.internal("Fonts/score.fnt"),
            Gdx.files.internal("Fonts/score.png"),false);

}

public void createStage(){

    v = new ScreenViewport();
    v.setCamera(camera);
    stage = new Stage(v, batch);

    if (menuView) {

        Buttons back = new Buttons("Back");
        stage.addActor(back.createButton(GameInfo.WIDTH / 2 - 100,
                GameInfo.HEIGHT / 2 - 200));

        back.addListener(new ChangeListener() {
            @Override
            public void changed(ChangeEvent event, Actor actor) {
                game.setScreen(new MenuScreen(game));
            }
        });

    } else {

        Buttons tryAgain = new Buttons("Try Again");
        stage.addActor(tryAgain.createButton(GameInfo.WIDTH / 2 - 200,
                GameInfo.HEIGHT / 2 - 200));

        tryAgain.addListener(new ChangeListener() {
            @Override
            public void changed(ChangeEvent event, Actor actor) {
                game.setScreen(new SurvivalScreen(game, name));
            }
        });

        Buttons menu = new Buttons("Menu");
        stage.addActor(menu.createButton(GameInfo.WIDTH / 2,
                GameInfo.HEIGHT / 2 - 200));

        menu.addListener(new ChangeListener() {
            @Override
            public void changed(ChangeEvent event, Actor actor) {
                game.setScreen(new MenuScreen(game));
            }
        });
    }
}

@Override
public void render(float delta) {

    Gdx.gl.glClearColor(0, 0, 0, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

    if (menuView) {

        if (counter == 0) {

            createStage();
            writeScoresToFile();
            readHighscore();
            counter++;

        }

        batch.begin();
        highscoreToFont();
        batch.end();
        stage.act();
        stage.draw();


    } else {

        if (counter == 0) {

            createStage();
            writeScoresToFile();
            readHighscore();
            compareHighscore();
            writeHighscore();
            counter++;

        }

        batch.begin();
        highscoreToFont();
        batch.end();
        stage.act();
        stage.draw();

    }

}

public void dispose(){
    batch.dispose();
    stage.dispose();
}

标签： javabuttonlibgdxstage

Answer 1

您可能缺少输入处理器的设置到您的阶段（至少它不在您发布的代码中）。

Gdx.input.setInputProcessor(stage);

注意：
假设 Buttons 类返回正确的演员。
（见我上面的评论）