I am trying to update the data in 'onresume' when I come back to my main activity from different activities but its photo is not updating without scrolling the list.

they don't work;

   detailRecyclerAdapter.notifyDataSetChanged();
   detailRecyclerView.invalidate();

CodePudding user response：

You have to update the recycler view by passing updated data into the adapter by creating a setter method into the adapter.

fun setResultItem(arrResultItem: java.util.ArrayList<ResultsItem>) {
        arrayList = ArrayList()
        arrayList.addAll(arrResultItem)
        notifyDataSetChanged()
    }

Now, please update recycler view from activity by,

adapter.setResultItem(updatedList)