title: iOS - Multiple levels of transparency
body: <p>In my view hierarchy I have multiple views on top of each other, and I find sometimes that when there are multiple areas of transparency on top of each other, that area becomes black.  What I'd like is to be able to see parts of the base view, despite the fact that there might be 4 or 5 views on top of it.</p>
  
  <p>Is there a known issue with multiple levels of transparency, or am I doing it wrong?</p>