title: Make one button do two different things
body: <p>What Im trying to implement is to have one of my buttons draw an image on the screen on click, but then I need to same button to dispose()/clear() the image when pressed again! I´ve managed this before, but I can´t remember how it´s done.</p>
  
  <pre><code>btnShare.addListener(new ChangeListener() {
              @Override
              public void changed(ChangeEvent event, Actor actor) {
  
                  stage.addActor(btnFB);
              }
          });
  </code></pre>