Infinite gridView scrolling android with custom adapter

InfiniteScrollCustomAdapter

public class InfiniteScrollCustomAdapter extends ArrayAdapter<DataItems> {
    // .... your code .....
    
  		@NonNull
		@Override
		public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
			int MAX_ITEM_PER_PAGE = 100;
			// so data is retrieved before the page ends and user doesn't have to wait
			if (position > (MAX_ITEM_PER_PAGE - 10)) {
        		// dataFetcher.next() should add to original list
				dataFetcher.next();
			}
			if (convertView == null) {
				convertView = getActivity().getLayoutInflater()
						.inflate(R.layout.custom_layout, parent, false);
			}
			return convertView;
		}
}