How to make a list with letter separators in Android?

Question

Android

Can you tell me how to make such a list?
https://storage.googleapis.com/spec-host-backup/mi...
To see letters like A
I understand that RecyclerView needs to be applied here. But I don't know how to implement separators with letters. Do you have an example/tutorial?

Answer 1

If directly, then check the element at the current position. If the previous one starts with another letter, then display everything you need, if it starts with the same letter, hide it.