title: Restrict access to a new created folder to only my android app
body: <p>In android, I created a new folder (if not existing) for my app whenever the app is installed.</p>
  
  <p>Now I want that the folder is only accessed by my app and no other gallery or file explorer app so that the folder's data is read only by my app.</p>
  
  <p>How can I restrict the access of that folder in above mentioned way?</p>
  
  <p>Thanks in advance. :)</p>