title: SetVisibility not working with ImageButton
body: <p>So I've been looking around in forums for how to do this, but nothing I have found has worked.  When I call setVisibility() on my image button, the button is unaffected. Below is my code that is in the onCreate method, and both buttons are showing up when I run the application.  However, if I were to hardcode the attribute into the xml file, the visibility does change. Any ideas why this is happening?</p>
  
  <pre><code>super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      btn1 = new ImageButton(this);
      btn1.setVisibility(GONE);
      btn2 = new ImageButton(this);
      btn2.setVisibility(GONE);
  </code></pre>