RecyclerView list with RecyclerView items : How to refresh a specific item?

Question

I am making a list with RecyclerView, let's call it VariationList. VariationList will contains items (VariationsItem). VariationsItems will contain a title, and a RecyclerView (VariationsItemsList).

If I click on an item of VariationsItemsList, I want the following VariationsItem to refresh, and eventually add or delete some of their items.

Is there any solution to refresh a specific item from the Adapter ? Or do I need to delete all items, then add them after modification ?

I know it is pretty confusing, so here is an example of my model :

In red, this is the list of green items. Each green item contains a title, and a blue list.

For example, if I click on "Petit", I want to refresh the "Test" list. If I click on "Vert", I want to refresh the "Taille" list and the "Test" list, to eventually add some items, or delete some.

You don't update the adapter. You update the item, then notify the adapter that an item at a given position has changed. — EpicPandaForce, May 24 '18 at 13:20
Check this: https://stackoverflow.com/questions/33176336/need-an-example-about-recyclerview-adapter-notifyitemchangedint-position-objec/38796098 — Ganesh Tikone, May 24 '18 at 13:30

score 1 · Accepted Answer · answered May 24 '18 at 12:28

you can do it in onBindView holder in recycle view adapter

    `` @Override
      public void onBindViewHolder(Viewholder holder, final int position) {


    holder.itemView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

    //code what ever you want to change use position
        }
    });



    });

or you can use https://github.com/greenrobot/EventBus for change any item from outside of activity

RecyclerView list with RecyclerView items : How to refresh a specific item?

1 Answers1