обновление данных в пользовательском адаптере с помощью swipeRefreshLayout

Я пытаюсь обновить данные с помощью swipeRefreshLayout, но каждый раз, когда я провожу вниз, чтобы обновить его, он повторяет старые, вместо того чтобы показывать новые данные.

Пожалуйста, помогите мне с этим и покажите, где я допустил ошибку и как ее исправить.

Мой код в фрагменте:

public class StoriesFragment extends Fragment {

    private static final String TAG = MainActivity.class.getSimpleName();

    private static final String url = "http://sho3a3.net/storiesfeed.json";

    private ProgressDialog pDialog;
    private List<StoriesItem> storiesListItem = new ArrayList<StoriesItem>();
    private ListView storiesListView;
    private CustomListAdapter adapter;

    private SwipeRefreshLayout swipeRefreshLayout;

    public StoriesFragment() {
        // Required empty public constructor
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.stories_fragment, container, false);

        /*Swipe Refresh Layout*/

        swipeRefreshLayout = (SwipeRefreshLayout) view.findViewById(R.id.swipe_container);
        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                adapter.notifyDataSetChanged();
                getDataFromUrl();
            }

        });
        swipeRefreshLayout.setColorScheme(
                android.R.color.holo_blue_bright,
                android.R.color.holo_green_light,
                android.R.color.holo_orange_light,
                android.R.color.holo_red_light);


        swipeRefreshLayout.post(new Runnable() {
            @Override
            public void run() {
                swipeRefreshLayout.setRefreshing(true);

                getDataFromUrl();
            }
        });

        storiesListView = (ListView) view.findViewById(R.id.list);
        adapter = new CustomListAdapter(getActivity(), storiesListItem);
        storiesListView.setAdapter(adapter);

        /*Click Feed Item */
        storiesListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                Toast.makeText(getActivity(), " " + i, Toast.LENGTH_SHORT).show();

                Object o = storiesListView.getItemAtPosition(i);
                StoriesItem storiesItem = (StoriesItem) o;
                Intent intent = new Intent(getActivity(), DetailsActivity.class);
                intent.putExtra("storiesItem", storiesItem);
                startActivity(intent);

            }
        });

        return view;
    }

    private void getDataFromUrl() {

        // RequestQueue requestQueue = Volley.newRequestQueue(getActivity());
        // Creating volley request obj
        JsonArrayRequest movieReq = new JsonArrayRequest(url,
                new Response.Listener<JSONArray>() {
                    @Override
                    public void onResponse(JSONArray response) {
                        Log.d(TAG, response.toString());
                        //hidePDialog();

                        String title;
                        String date;
                        String profession;
                        // Parsing json
                        for (int i = 0; i < response.length(); i++) {
                            try {

                                JSONObject obj = response.getJSONObject(i);
                                StoriesItem storiesItem = new StoriesItem();

                                //Title
                                title = obj.getString("title");
                                byte[] bytesTitle = title.getBytes("ISO-8859-1");
                                String stringTitle = new String(bytesTitle, "UTF-8");
                                storiesItem.setTitle(stringTitle);

                                //Date
                                date = obj.getString("date");
                                byte[] bytesDate = date.getBytes("ISO-8859-1");
                                String stringDate = new String(bytesDate, "UTF-8");
                                storiesItem.setDate(stringDate);


                                //Profession
                                profession = obj.getString("profession");
                                byte[] bytesProfession = profession.getBytes("ISO-8859-1");
                                String stringProfession = new String(bytesProfession, "UTF-8");
                                storiesItem.setProfession(stringProfession);


                                storiesItem.setThumbnailUrl(obj.getString("image"));
                                storiesItem.setContent(obj.getString("content"));


                                // adding movie to movies array
                                storiesListItem.add(storiesItem);


                            } catch (JSONException e) {
                                e.printStackTrace();
                            } catch (UnsupportedEncodingException e) {
                                e.printStackTrace();
                            }

                        }

                        // swipeRefreshLayout.setRefreshing(false);
                        onItemsLoadComplete();
                        // notifying list adapter about data changes
                        // so that it renders the list view with updated data


                        adapter.notifyDataSetChanged();
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                Toast.makeText(getActivity(), "Error Connection", Toast.LENGTH_SHORT).show();
                VolleyLog.d(TAG, "Error: " + error.getMessage());
                swipeRefreshLayout.setRefreshing(false);
                //hidePDialog();

            }
        });

        //requestQueue.add(movieReq);
        // Adding request to request queue
        AppController.getInstance().addToRequestQueue(movieReq);
    }

    void onItemsLoadComplete() {
        // Update the adapter and notify data set changed
        // ...
        adapter.notifyDataSetChanged();
        // Stop refresh animation
        swipeRefreshLayout.setRefreshing(false);
    }

    public void onUpdate() {
        adapter = new CustomListAdapter(getActivity(), storiesListItem);
        storiesListView.setAdapter(adapter);
        if (swipeRefreshLayout.isRefreshing()) {
            swipeRefreshLayout.setRefreshing(false);
        }
    }
}