title: Hiding CATiledLayer tile creation
body: <p>Since in iOS5 Apple silently changed the tileSize limit to 1024. This limit has introduced a visual problem in my <code>CATiledLayer</code> in a <code>scrollview</code>. On Devices that have a larger screen size than the iPhone 5 you can see 2 (iPhone 5) or 4 (iPad) tiles when the screen is build.
  While technically everything is OK, I think the user shouldn't see this process and should be presented with a fully build layer.</p>
  
  <p>I already disable the fade duration, still the tiles are visible.</p>
  
  <p>Problem: It doesn't seem to be possible to find out when <code>CATiledLayer</code> has finished drawing (threading, caching).</p>
  
  <p>Any ideas on how this problem can be sorted?</p>