public class AutoFitRecyclerView extends RecyclerView

[codedex-24]

Hi really nice tutorial but i am have an error in this class "public class AutoFitRecyclerView extends RecyclerView
{" that line specifically it shows error as 
"getOverlay() in andriod.view.ViewGroup clashes with getOverlay in andriod.view.View attempting to use incompatible return type"

The options to correct this when i use alt and enter keys shows to implement methods but when i use that nothing happens. Every other thing works fine the image folders are displayed corrected but when i click on a picture folder the app crashes i have tried to find where the andriod.view.ViewGroup and andriod.view.View is so as to correct one of them all to no avail please any form of assistance will be greatly appreciated
Here is a picture