For the Amir_RecyclerView a solution is required that keeps the section headings at the top of an Expandable List while scrolling up or down.
In principle, it should have the same effect as Erel's solution for CLV or thedesolatesoul's solution for Informatix's ULV.
In principle, it should have the same effect as Erel's solution for CLV or thedesolatesoul's solution for Informatix's ULV.