title: Creating Photo library like iPhone, but UIImage tap event handler not working
body: <p>Hi i am new to iOS programming.
  I need to create an photo library like iPhone native photo app. I have found a library <a href="https://github.com/mwaterfall/MWPhotoBrowser" rel="nofollow">MWPhotoBrowser</a>
  that provides nearly same UI for photo browsing and its perfect for my requirement. But now i have 2 problems</p>
  
  <p>First is that i need to create a grid layout with thumbnails. Clicking on an thumbnail should display image in full screen with browsing functionality. I tried to dynamically adding <code>UIImageViews</code> in <code>UIScrollView</code>, but UIScrollView is not scrolling and images are going out of screen.</p>
  
  <p>Second is i could not get any tap handler on <code>UIImageView</code> so that i can open an image in full screen. 
  Looking for some tips here, i am really stuck here.</p>