title: iOS - touchesMoved called only once in subclassed UIScrollView
body: <p>I am trying to drop movable UIImageViews within a subclassed UIScrollView so that I can drag them around my UIScrollView.  I subclassed UISCrollView and the dropping behavior is working, but when I try to drag the images, touchesMoved is only evaluated once.  The touchesMoved method in my subclass of UIScrollView looks like this:</p>
  
  <pre><code>-(void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event{
      if (!self.dragging) {
          [self.nextResponder touchesMoved: touches withEvent:event]; 
      }else{
          [super touchesEnded:touches withEvent:event];
      }        
  }
  </code></pre>
  
  <p>It is being called continuously during a moving touch, as it should.  Can anyone think of a reason that the touchesMoved method in my view controller would only be called once?</p>