Enable uiimageview dragging across horizontal uiscrollview
<p>In my ViewController I have a fixed UIImageView above a UIScrollView (there is no parent child relationship)</p>

<p>When the user drags across the screen the image updates and the pagination increases, but there is no scrolling effect.</p>

<p>How can I enable horizontal animation and fade out?</p>

<p>Alternatively, if I create uiimageview and add subview programatically the scroll effect works, but how can I center each image? </p>

<p>Thanks</p>