title: android set exit icon to item menu
body: <p>i have a menu contains of one item (item to exit application), i want to set an icon to that item, i am working like this (<code>exit is the name of my icon</code>);</p>
  
  <pre><code>&lt;item android:id="@+id/bexitMenuExit"
          android:title="Exit"
          android:alphabeticShortcut="@drawable/exit"
          android:icon="@android:drawable/ic_menu_preferences"
          &gt;&lt;/item&gt;
  </code></pre>
  
  <p>but i didn't got the icon on the item, and i didn't find <code>android:icon</code> for exit, i found for help, setting ... , but not for exti</p>