title: Map Material design icon to Drawable folder in Android application
body: <p>Google has released a set of <a href="https://github.com/google/material-design-icons" rel="nofollow">icons</a> for Material design. However each folder like drawable-xhdpi in this has 4 different sizes of each icon. If some one wants to use them in his/her android application which one to use for each density type</p>
  
  <ol>
  <li>drawable-hdpi</li>
  <li>drawable-xhdpi</li>
  <li>drawable-xxhdpi</li>
  <li>drawable-xxxhdpi</li>
  </ol>
  
  <p>Can anybody help me which icons to use here?
  Thanks</p>