How to access RecyclerView's ViewHolder to call its draw method?

Question

Android

There is an adapter private class MyAdapter extends RecyclerView.Adapter
and private class ItemHolder extends RecyclerView.ViewHolder
Rendering is done in updateHolder when called in ItemHolder bindItem

public void bindItem(ItemClass item) {

  mItem = item;
  updateHolder();
}

from

@Override
        public void onBindViewHolder(ItemHolder holder, int position) {

            holder.bindItem(mItems.get(position));
        }

UpdateHolder() uses some external value, depending on which mItem.field1 or mItem.field2 is displayed.
How, when changing the value of an external value, to redraw all the elements of the list only by calling updateHolder()?

Answer 1

UpdateHolder() uses some external value, depending on which mItem.field1 or mItem.field2 is displayed.

This is not very good practice. It is better that all the data lies in the data element. When the data changes, the list with the data must change, DiffUtil should be called, and the data change should be transferred to the adapter.