title: RecyclerView - get all existing views/viewholders
body: <p>I want to update the <code>RecyclerView</code> while it's displaying data, in my case, I show images with or without labels.</p>
  
  <p>Defaultly I set the visibility of the label when I create the view holder and that's fine, but I want the user to change the labels visibility through the menu while the <code>RecyclerView</code> is shown, so I want to manually update the visibility for all existing views in the <code>RecyclerView</code>.</p>
  
  <p>Can I somehow get all existing <code>Views</code>? I need all, not only the visible ones, I don't want that a later recycled <code>View</code> is not updated...</p>