title: Hidden Folders still showing in gallery
body: <p>I'm trying to hide from gallery all my application's images . What I did was to use a "." in my root folder to hide this, but after  that my gallery still showing my hidden as shown in screenshot. How can I remove it programatically?? Is there a better way to remove this images from gallery than hide the folder?</p>
  
  <p><img src="https://i.stack.imgur.com/dqM3I.jpg" alt="enter image description here"></p>