title: Example usage for ContentLoadingProgressBar
body: <p>I just jumped and found this class <code>ContentLoadingProgressBar</code> from the developer site in android. I searched couldn't find any usage or explanation for the class. I've listed down few questions on the class and would be great if someone answers it.</p>
  
  <ol>
  <li>How is it different from ProgressBar ?</li>
  <li>Should we show/hide the ProgressBar ourself ?</li>
  <li>Styling the ProgressBar ?</li>
  </ol>
  
  <p><a href="https://developer.android.com/reference/android/support/v4/widget/ContentLoadingProgressBar.html">https://developer.android.com/reference/android/support/v4/widget/ContentLoadingProgressBar.html</a> </p>