title: Retrieving values from subviews Objective-c
body: <p>I have created a subclass of a UIView which is a rotating wheel. This wheel is part of another UIView which has an image in the top right corner. 
  When the wheel is turned, in the touchMoved function the right most item is returned (its number). I need to then change the parent's image automatically when the subview is turned (when the number is returned)</p>
  
  <p>Assuming I have this number in the subview, how may I return this to the parent, or change the image (in the parent UIView) from the subview?</p>
  
  <p>Thanks</p>