Carregar Dados ao Rolar (Scroll)

    
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View viewRoot = inflater.inflate(R.layout.fragment_one, container, false);

        lytLoading = (RelativeLayout) viewRoot.findViewById(R.id.lytLoading);
        lytLoading.setVisibility(View.VISIBLE);

        rv = (RecyclerView) viewRoot.findViewById(R.id.rv);
        rv.setLayoutManager(new LinearLayoutManager(getContext()));

        new AsyncHttpClient().get(Constantes.URL_WS_BASE + "anuncio/list", new JsonHttpResponseHandler() {
            @Override
            public void onSuccess(int statusCode, Header[] headers, JSONArray response) {
                if(response != null) {
                    Type type = new TypeToken<List<Anuncio>>(){}.getType();
                     anuncios = new Gson().fromJson(response.toString(), type);

                    AnuncioRecyclerAdapter adapter = new AnuncioRecyclerAdapter(anuncios);
                    rv.setAdapter(adapter);

                } else {
                    Toast.makeText(getActivity(), "Houve um erro ao carregar a lista de anúncios.", Toast.LENGTH_LONG).show();
                }
                lytLoading.setVisibility(View.GONE);
            }

            @Override
            public void onFailure(int statusCode, Header[] headers, String responseString, Throwable throwable) {
                super.onFailure(statusCode, headers, responseString, throwable);
                Toast.makeText(getActivity(), "Falha: " + responseString, Toast.LENGTH_LONG).show();
            }
        });
        return viewRoot;
    }