android - Recyclerview notifyItemInserted not updating scrollbar

Question

I want to add items to my recyclerview and that my scrollbar is updated accordingly.

Here is my RecyclerView :

<android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="300dp"
        android:scrollbars="vertical"
        android:scrollbarThumbVertical="@color/clear_grey"
        android:fadeScrollbars="false"
        />

After adding an element to my dataset, I am calling

recyclerViewAdapter.notifyItemInserted(recyclerViewAdapter.getItemCount() - 1);

The problem is, the scrollbar is not updated : I have to touch the views for it to be updated.

I was using

recyclerViewAdapter.notifyDataSetChanged();

The scrollbar is updated, but I can't use this solution. (I need to be able to select text from the views, which is impossible with notifyDataSetChanged.)

Any ideas on how to update the scrollbar ?

Answer 1

Turns out I had set fixedSize to true :

recyclerView.setHasFixedSize(true);

And thanks to this https://stackoverflow.com/a/40373122/2437227, I tried without it and it works.