How to remain at a scroll position in RecyclerView after adding items at its first index and call notifydatasetchange

Question

I am using a RecyclerView, I add items before the first item, the scroll position moves up to the newly first item added. How can I maintain my scroll position after adding new items at its first index and call notifydatasetchange() ?

this is what i do in my adapter

    mCurrentFragment.items.addAll(0, createLineItems(dataArrayList));

    notifyDataSetChanged();

Any suggestions ?

Answer 1

There are two options:

1. Use the more sophisticated versions of notify

   List newData = createLineItems(dataArrayList);
   mCurrentFragment.items.addAll(0, newData);
   notifyItemRangeInserted(0, newData.size());
   

2. Use stable IDs. On your adapter override public long getItemId (int position) to make it return MEANINGFUL values and call setHasStableIds(true); on it.