RecyclerView: Animate item resize

Question

I have a RecyclerView. Each of its items of the recycler view can be either expanded or not. There can be only one item expanded at the same time.

In essenc

Answer 1

You should just use notifyItemChanged(getPosition(), new Object()) instead.

In your adapter, override onBindViewHolder(GigExtraViewHolder holder, int position, List<Object> payloads) , if payloads is null or empty do your original bind logics, else, just do your own expand/collapse animation.

Answer 2

OK, So I have found a solution that does not involve calling notifyItemChanged so the view is not replaced. The con is that you have to manualy check the view consistency. For that, I have created a small library that allows exactly what I was looking for, for 5 loc in the ViewHolder.

The trick is to animate height change manualy rather than using a LayoutTransition.

The demo project can be found here.