title: iOS | Photos App Like Photo Browser
body: <p>First of all, I do not want to create a simple 2 or 3 columns gallery. I need exactly like the screenshot of Photos App, I've attached to the question. Big image can be paginated, thumbnails ill be scrolled, selected image's thumbnail will be animated.</p>
  
  <p><a href="https://i.stack.imgur.com/mb49N.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mb49N.png" alt="enter image description here"></a></p>
  
  <p>I have some ideas.</p>
  
  <p>1st, I can use collection view for the thumbnail scroller. (I have already done that.) But big images' pagination and animation of the selected images thumbnail is the trick here.</p>
  
  <p>2ns, I can use UIPageViewController for the big image, but how can I achieve the page control with the thumbs, it is the problem.</p>
  
  <p>Any ideas? Thank you.</p>