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How to place an Expandable ListView inside a RecyclerView ListView how to do this? Like this

without Expanding ExpandingListView

with expanding Expanding ExpandableListView

used Expandable Listview inside RecyclerView.

all are working fine but while expanding we cannot view the child items when given height as wrap content in Recycler view item height.

to view the same given a fixed height for Recyclerview item height, but it is not efficient.

any other method to do this? Thanks in advance

Main RecyclerView Adapter