title: How to show Image from document directory inside Gallery App IOS?
body: <p>I am working in react native and I have downloaded some image from the internet inside the Document directory App folder in IOS. Now, I also want this image to show in IOS native Photos/Gallery App. Concern:</p>
  
  <ol>
  <li>Do I need to make another copy of this image at some other folder to achieve it?</li>
  <li>I have also found a method UIImageWriteToSavedPhotosAlbum(), but I failed to understand the usage, Will it create another copy or I need to enable some magic flag kind of thing to work?</li>
  </ol>