title: What should be the default launcher icon size
body: <p>I refer to the documentation at <a href="http://developer.android.com/guide/practices/ui_guidelines/icon_design.html#icon-sets" rel="noreferrer">http://developer.android.com/guide/practices/ui_guidelines/icon_design.html#icon-sets</a></p>
  
  <p>Hence, I plan to have the following directory structures.</p>
  
  <pre><code>res/
      drawable/   
          icon.png (? x ? px)
      drawable-ldpi/  
          icon.png (36x36 px)
      drawable-mdpi/  
          icon.png (48x48 px)
      drawable-hdpi/  
          icon.png (72x72 px)
  </code></pre>
  
  <p>However, I cannot find any documentation, to mention the size of default launcher icon size.</p>
  
  <p>May I know what should be the default launcher icon size?</p>