Show Header and expand childs

Question

I want to create an expandable view with a header and child, whats the best approach to do something like this:

1. A view to represent a header, that should be the first item of my list

2. When the header is clicked, it shows the rest of the items. Including itself.

I dont know if I should use a RecyclerView or an ExpandableList. Can you give some advices or examples to implement this?