title: Updating zoomScale of UIScrollView
body: <p>I just created an animation to zoom in or zoom out a UIScrollView, but my problem is that the zoomScale is not updating. Like for example, I zoom out my UIView inside of my UIScrollView using the animation I created, but when I zoom in using expand gesture the UIView will automatically change to its big size or zoom in size. I saw the my zoomScale is not updating and still in 1.0 scale. Then I update my zoomScale after the animation but the problem is the zoom out UIView will automatically go to the top of the screen. Can I update this zoomScale property of UIScrollView?</p>
  
  <p>Thanks.</p>