title: Android: Custom view for a menu item
body: <p>I want to be able to specify a custom view for a <a href="http://developer.android.com/reference/android/view/MenuItem.html" rel="noreferrer">MenuItem</a>. </p>
  
  <p>I want to display an indicator on a shopping cart menu item in the action bar displaying how many items are in the cart currently. </p>
  
  <p>Is the only way that I can do this is through adding a custom view instead of utilising the MenuItem lifecycle etc.? </p>