title: Apple's Photos app uses UIImagePickerController?
body: <p>Can any one tell if Apple's Photos app uses UIImagePickerController as the picture shown?  If it uses UIImagePickerController, can you tell where/how to access to individual icon image so that when one taps on it to select, one can impose a tiny checkmark at the corner? ( I don't need to know how to put the check mark).</p>
  
  <p>Thanks.</p>
  
  <p><img src="https://i.stack.imgur.com/iEDvK.png" alt="enter image description here"></p>