title: How to create a horizontal loading progress bar?
body: <p>When uninstalling an android application, or do some configuration, there will show such a horizontal progress bar, like following picture:</p>
  
  <p><img src="https://i.stack.imgur.com/o31Op.png" alt="progress bar"></p>
  
  <p>It's not the same style like <code>@android:style/Widget.ProgressBar.Horizontal</code>.</p>
  
  <p>How to use it in my own application?</p>