title: Toggle Button in Navigation Drawer
body: <p>I am trying to implement a toggle button into the Navigation Drawer Project, that Android Studio can automatically generate.
  In the end I want to have something like this ("Downloaded only"-Button): </p>
  
  <p><a href="https://i.stack.imgur.com/cvCjb.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cvCjbm.png" alt="enter image description here"></a></p>
  
  <p>Unfortunately I don't understand how to add a toggle button to the ListView of the NavDrawer. I could probably use one of the "Custom NavDrawer Libs" out there but I would like to understand the way Google proposes it with the auto generated example. </p>
  
  <p>Any ideas on how to implement this into the default NavDrawer Project?</p>