title: How to override the "Save Image" menu of WKWebView on iOS 10
body: <p>I want to develop an iOS native app using WKWebView.
  when I loading a page e.g:  <a href="http://www.google.com" rel="nofollow noreferrer">http://www.google.com</a>
  and When I long press &quot;Google&quot; logo, it will popup a UIAlertViewController with &quot;Save Image&quot;
  &quot;Copy&quot;
  &quot;Cancel&quot;
  items.</p>
  <p>but when I tap on &quot;Save Image&quot; the photo will be saved into system &quot;photo library&quot;
  what I need is to &quot;Save Image&quot; to my app documents folder.</p>
  <p>is there a way to implement it?</p>
  <p><a href="https://i.stack.imgur.com/MGSJh.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MGSJh.png" alt="I upload a screenshot for more detailed explanation: I mean the UIActionSheet" /></a></p>
  <p><a href="https://i.stack.imgur.com/u7Pax.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/u7Pax.png" alt="not the &quot;copy past &quot; menu" /></a></p>