RecyclerView only changes after the screen goes off

Question

I first had a problem retrieving data from localhost then I added the code the

jsonArrayRequest.setRetryPolicy(new DefaultRetryPolicy(0, 0, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT));

I no longer got an error.

However the data is only displayed once the screen goes off and I put is back on. Am I missing some line or code or should I remove some line of code?

Answer 1

So I found out the key was to update the recycler adapter to inform it that the data has changed. With this line of code.

adapter.notifyDataSetChanged();