title: Creating a grid view on iOS
body: <p>I need to implement a grid view with dynamically-changing images.</p>
  
  <p>Most of the time, I use a <code>UITableView</code> to create a grid, but I run into memory issues if I have a large number of images.</p>
  
  <p>In iOS 6, the <code>UICollectionView</code> was added, but I've never used it before.</p>
  
  <p>What are some "best practices" and view subclasses to use when making a grid view so I don't have memory issues?</p>