title: In a UICollectionView, how can I get my cells to autolayout BEFORE they appear on screen?
body: <p>I have a UICollectionView with self sizing cells. When I scroll through the collection I can see the cells resizing themselves at the bottom of the screen.</p>
  
  <p>Is there a way I can get the cells to resize themselves before the appear?</p>
  
  <p>I am using flow layout and my cells contain just 3 labels. I am also using estimatedItemSize.</p>