Showing controller instructions
One of the special requirements for an app to be approved for Android TV is to provide a dialog indicating how the controller is mapped. For this Google provides us with a template that we can use and it is available online: (http://developer.android.com/training/tv/games/index.html).
We already have a dialog that is displayed when a controller is connected, but we never updated it from being just an
AlertDialog. It is time we made it a custom dialog.
The logic for phones was to show the dialog only the first time the main menu was loaded and a controller was connected. For Android TV, ...