相关疑难解决方法(0)

我想点击一个按钮,但它不起作用 - 似乎我需要使用,unproject()但我无法弄清楚如何.有问题的代码是:

Texture playButtonImage;
SpriteBatch batch;
ClickListener clickListener;
Rectangle playButtonRectangle;
Vector2 touchPos;
OrthographicCamera camera;

@Override
public void show() {
    playButtonImage = new Texture(Gdx.files.internal("PlayButton.png"));

    camera = new OrthographicCamera();
    camera.setToOrtho(false, 800, 480);
    batch = new SpriteBatch();

    playButtonRectangle = new Rectangle();
    playButtonRectangle.x = 400;
    playButtonRectangle.y = 250;
    playButtonRectangle.width = 128;
    playButtonRectangle.height = 64;
}

@Override
public void render(float delta) {
    Gdx.gl.glClearColor(0, 0, 0.2f, 1);
    Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);

    camera.update();
    batch.setProjectionMatrix(camera.combined);

    batch.begin();
    batch.draw(playButtonImage, playButtonRectangle.x, playButtonRectangle.y);
    batch.end();

    if (Gdx.input.isTouched()) {
        Vector2 touchPos = new Vector2(); …