title: QLPreviewController hide bottom toolbar
body: <p>I use <code>QLPreviewController</code> in my app and want to hide bottom toolbar which allows to move through it's datasource items. Is it possible to do somehow? </p>
  
  <p>I tried to search it as a <code>subview</code> of <code>QLPreviewController's view</code> but it has only one subview of <code>_UISizeTrackingView</code> class . As i understand it's a private class so i have no rights to look for something there.</p>
  
  <p>Are there any ways to hide this toolbar and does Apple allow to make that? Thank you.</p>