title: Grouped list view looks different in iOS and Droid
body: <p>In xamarin forms, the grouped list view appears differently in iOS and Android.</p>
  
  <p>In iOS, the group name is displayed on the top as long as the items under the group is on the screen, even when scrolled. However in android the group name is scrolled up just like a list item. </p>
  
  <p>Is there a way to make this appearance common in Android and iOS?</p>