如何防止recyclerView自动滚动？

Question

I have a recyclerView with chat message and open it will scroll to the latest position,but i update item's height in onBindViewHolder and recyclerView will auto scroll to incorrect position,how to pin item position after update item's height?

Answer 1

into getMessages method add this below code

 layoutManager.smoothScrollToPosition(messagesRecycler, null, chatAdapter.getItemCount());
 chatAdapter.notifyDataSetChanged();

Answer 2

if you want scroll to last item use lm.setStackFromEnd(true);

use below code:

LinearLayoutManager llm = new LinearLayoutManager(getContext());
llm.setStackFromEnd(true);
recyclerView.setLayoutManager(llm);