title: UiScrollview scrollviewDidScroll detect user touch
body: <p>I am using a <code>UIScrollView</code> in my app, and use the <code>scrollviewDidScroll</code> method to move some other views that are not inside the scrollview. This behavior should only occur when the user is actually moving the scrollview with a finger and not when the touch event ends.</p>
  
  <p>Currently I am using the <code>dragging</code> property of the scrollview to get this behavior, but it has a problem: when the user swipes over the scrollview and touches it again before it stopped decelerating, the <code>dragging</code> property is not true although the user is dragging the scrollview with a finger.</p>