title: How to detect when the user takes a screenshot out of the application?
body: <p>How to <code>detect</code> when the user takes a <code>screenshot</code> out of the <code>application</code> or <code>application</code> is not in active stage? I want to fire a push notification when user take screen shot out of the app or anywhere from <code>iphone</code>.</p>
  
  <p>like this app :- <a href="https://apps.apple.com/us/app/liketoknow-it/id1154027990" rel="nofollow noreferrer">https://apps.apple.com/us/app/liketoknow-it/id1154027990</a></p>