title: Cannot swipe to switch UICollectionView page if you begin gesture on a cell
body: <p>I have a <code>UICollectionView</code> that contains a single <code>UIButton</code> in each cell. I've discovered it's difficult to swipe between the horizontal pages because if you touch down on a cell to begin the swipe, the <code>UIButton</code> touch events are triggered instead of allowing the swipe gesture to occur. I do have Delays Content Touches enabled for the collection view. What can I do to solve this so that it will recognize the page pan swipe gesture when you begin swiping on a cell? Perhaps the amount of delay can be increased before it recognizes a <code>UIControl</code> event?</p>
  
  <p>Note that I do need to preserve the touch events for the buttons - I need to know when these events occur: TouchDown, TouchDragEnter, TouchCancel, TouchDragExit, and TouchUpInside.</p>