Read my blog posts:
rubensousa/RecyclerViewNestedExample
From: https://rubensousa.com/2019/08/16/nested_recyclerview_part1/ and https://rubensousa.com/2019/08/27/saving_scroll_state_of_nested_recyclerviews/
Kotlin
From: https://rubensousa.com/2019/08/16/nested_recyclerview_part1/ and https://rubensousa.com/2019/08/27/saving_scroll_state_of_nested_recyclerviews/
Kotlin