How to get rss feed auto notification android?

I do not know how to bring rss feed auto notification .Application works well. Xml data rss feed works. I want the rss feed to come as a post notification.

1. I need rss feed autofication merge.

   private RSSFeed rssFeed = null;
   private ArrayList<RSSItem> postsList;
   private RssAdapter listAdapter;
   private ViewModeUtils viewModeUtils;
   private SwipeRefreshLayout swipeRefreshLayout;
   
   private Activity mAct;
   private RelativeLayout ll;
   private String url;
   private AdView mAdView;
   private View rootView;
   @Override
   public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
       ll = (RelativeLayout) inflater.inflate(R.layout.fragment_list_refresh, container, false);
       return ll;
   }
   
   @Override
   public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
       super.onViewCreated(view, savedInstanceState);
       setHasOptionsMenu(true);
   
       RecyclerView listView = ll.findViewById(R.id.list);
       postsList = new ArrayList<>();
       listAdapter = new RssAdapter(getContext(), postsList);
       listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_PROGRESS);
       listView.setAdapter(listAdapter);
       listView.setLayoutManager(new LinearLayoutManager(getContext(), LinearLayoutManager.VERTICAL, false));
   
       swipeRefreshLayout = ll.findViewById(R.id.swipeRefreshLayout);
       swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
           @Override
           public void onRefresh() {
               refreshItems();
           }
       });
   }
   
   @Override
   public void onActivityCreated(Bundle savedInstanceState) {
       super.onActivityCreated(savedInstanceState);
       mAct = getActivity();
   

   // url = RssFragment.this.getArguments().getStringArray(MainActivity.FRAGMENT_DATA)[0]; refreshItems(); }

   private class RssTask extends AsyncTask<Void, Void, Void> {
   
       @Override
       protected Void doInBackground(Void... arg0) {
           try {
               URL rssUrl = new URL("http://www.rssmix.com/u/12847959/rss.xml");
               SAXParserFactory mySAXParserFactory = SAXParserFactory.newInstance();
               SAXParser mySAXParser = mySAXParserFactory.newSAXParser();
               XMLReader myXMLReader = mySAXParser.getXMLReader();
               RSSHandler myRSSHandler = new RSSHandler();
               myXMLReader.setContentHandler(myRSSHandler);
               InputSource myInputSource = new InputSource(rssUrl.openStream());
               myXMLReader.parse(myInputSource);
   
               rssFeed = myRSSHandler.getFeed();
   
           } catch (ParserConfigurationException | IOException | SAXException e) {
               Log.printStackTrace(e);
           }
   
           return null;
       }
   
       @Override
       protected void onPostExecute(Void result) {
           if (rssFeed != null) {
               if (rssFeed.getList().size() > 0) {
                   postsList.addAll(rssFeed.getList());
               }
   
               listAdapter.setHasMore(false);
               listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_LIST);
               swipeRefreshLayout.setRefreshing(false);
   
           } else {
               String message = null;
               if (!url.startsWith("http"))
                   message = "Debug info: '" + url + "' is most likely not a valid RSS url. Make sure the url entered in your configuration starts with 'http' and verify if it's valid XML using https://validator.w3.org/feed/";
               Helper.noConnection(mAct, message);
   
               listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_EMPTY);
               swipeRefreshLayout.setRefreshing(false);
   
           }
   
           super.onPostExecute(result);
       }
   
   }
   
   @Override
   public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
       inflater.inflate(R.menu.rss_menu, menu);
       viewModeUtils = new ViewModeUtils(getContext(), getClass());
       viewModeUtils.inflateOptionsMenu(menu, inflater);
       ThemeUtils.tintAllIcons(menu, mAct);
   }
   
   private void refreshItems() {
       postsList.clear();
       listAdapter.setModeAndNotify(InfiniteRecyclerViewAdapter.MODE_PROGRESS);
       new RssTask().execute();
   }
   
   @Override
   public boolean onOptionsItemSelected(MenuItem item) {
       viewModeUtils.handleSelection(item, new ViewModeUtils.ChangeListener() {
           @Override
           public void modeChanged() {
               listAdapter.notifyDataSetChanged();
           }
       });
       switch (item.getItemId()) {
           case R.id.info:
               //show information about the feed in general in a dialog
               if (rssFeed != null) {
                   String FeedTitle = (rssFeed.getTitle());
                   String FeedDescription = (rssFeed.getDescription());
                   //String FeedPubdate = (myRssFeed.getPubdate()); most times not present
                   String FeedLink = (rssFeed.getLink());
   
                   AlertDialog.Builder builder = new AlertDialog.Builder(mAct);
   
                   String titlevalue = getResources().getString(R.string.feed_title_value);
                   String descriptionvalue = getResources().getString(R.string.feed_description_value);
                   String linkvalue = getResources().getString(R.string.feed_link_value);
   
                   if (FeedLink.equals("")) {
                       builder.setMessage(titlevalue + ": \n" + FeedTitle +
                               "\n\n" + descriptionvalue + ": \n" + FeedDescription);
                   } else {
                       builder.setMessage(titlevalue + ": \n" + FeedTitle +
                               "\n\n" + descriptionvalue + ": \n" + FeedDescription +
                               "\n\n" + linkvalue + ": \n" + FeedLink);
                   }
   
                   builder.setNegativeButton(getResources().getString(R.string.ok), null)
                           .setCancelable(true);
                   builder.create();
                   builder.show();
   
               }
               return true;
           default:
               return super.onOptionsItemSelected(item);
       }
   }
   

   }

Let me know if anyone knows how I get rss feed notification

from How to get rss feed auto notification android?