title: Progressbar does not show up
body: <p>a progess bar does not come up on the screen with the follow code. why?</p>
  
  <pre><code>protected void onListItemClick(ListView l, View v, int position, long id) {
          super.onListItemClick(l, v, position, id);
  
          ProgressBar pBar = new ProgressBar(this, null, android.R.attr.progressBarStyleSmall);
          pBar.setLeft(5);
          pBar.setTop(5);
          pBar.setIndeterminate(true);
          pBar.setVisibility(View.VISIBLE);
          pBar.bringToFront();
  </code></pre>