title: libgdx with scene2d and actor is not displaying the sprite
body: <p>I am testing out Libgdx and Scene2d. I expected this small program to display a logo, but it draws a black screen only. Any idea what am I missing?</p>
  
  <pre><code>public class MyGame implements ApplicationListener {
      private Stage stage;
  
      @Override
      public void create() {
          stage = new Stage(800, 800, false);
          Gdx.input.setInputProcessor(stage);
          MyActor actor = new MyActor();
          stage.addActor(actor);
      }
  
      @Override
      public void render() {
          Gdx.gl.glClear(GL10.GL_COLOR_BUFFER_BIT);
          stage.act(Gdx.graphics.getDeltaTime());
          stage.draw();
      }
  
      @Override
      public void dispose() {
          stage.dispose();
      }
  
      @Override
      public void resize(int width, int height) {
              stage.setViewport(800, 800, false);
      }
  }
  
  
  public class MyActor extends Actor {
      Sprite sprite;
  
      public MyActor() {
          sprite = new Sprite();
          sprite.setTexture(new Texture("data/libgdx.png"));
  
          setWidth(sprite.getWidth());
          setHeight(sprite.getHeight());
          setBounds(0, 0, getWidth(), getHeight());
          setTouchable(Touchable.enabled);
          setX(0);
          setY(0);
      }
  
      @Override
      public void draw(SpriteBatch batch, float parentAlpha) {
          Color color = getColor();
          batch.setColor(color.r, color.g, color.b, color.a * parentAlpha);
          batch.draw(sprite, getX(), getY());
      }
  }
  </code></pre>