GridViewWithHeaderAndFooter when using it with AbsListView.OnScrollListener issue

[TarifHatoum]

when scrolling a loadmore using OnScrollListener the items are disappearing note that the layout contains a framelayout always mentioning the isseue :
Attempt to invoke virtual method 'void android.widget.FrameLayout.setLayoutParams(android.view.ViewGroup$LayoutParams)' on a null object reference
please if someone knows how to solve it knowing that the frame layout is already defined inside my custom adapter