title: ProgressBar thickness
body: <p>Look at the images below :</p>
  
  <ul>
  <li><img src="https://i.stack.imgur.com/mvoO7l.png" alt="enter image description here"></li>
  <li><img src="https://i.stack.imgur.com/fZnLCs.png" alt="enter image description here"></li>
  <li><img src="https://i.stack.imgur.com/i4XeQl.jpg" alt="enter image description here"></li>
  </ul>
  
  <p>On each image <code>ProgressBar</code> has different style from another ProgressBar's.</p>
  
  <p>I want to know, how i can specify progress bar <strong>style/thin</strong> in my application.</p>
  
  <p>I look at <code>android.R.attr.progressBarStyleSmall</code> but it just change a size of progress bar, not a thickness of a spinning circle.</p>
  
  <blockquote>
    <p>Note : Don't post answers which suppose create a custom drawables. <strong><em>Libraries allow.</em></strong></p>
  </blockquote>