title: How to add my app to the share sheet action
body: <p>I am trying to add my app to the share sheet. if you look a photo and you press the share button you see Facebook twitter ...</p>
  
  <p>Recently i downloaded a few app from the store and they appear in the share sheet as well so i suppose it possible in some way.</p>
  
  <p>Is it possible? If so how</p>
  
  <p><strong>What this question is not</strong></p>
  
  <ol>
  <li><p>This is not about simply share data between apps you created. Usually a custom URL scheme is for this purpose, but only when your data source know how to use the custom scheme. But this question is about how to make your app ready for a third party app (i.e. Photos) to share standard content (photos, movies etc) to you.</p></li>
  <li><p>This is not about how to prepare your content to share on for example Facebook or Twitter. Instead, it asks how to write your own Facebook-like app so it can accept shares</p></li>
  </ol>