How do I successfully refresh Recyclerview in fragment using SwipeRefreshLayout

Question

I am fetching data from a website using jsoup into recyclerview but I can't quite figure out exactly what I should do to refresh and update the recyclerview using the swiperefreshlayout. Can someone please help explain what code do I put in onRefresh in the code below to be able to refresh on pull down?

Content content = new Content();
    content.execute();

    swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
        @Override
        public void onRefresh() {
            swipeRefreshLayout.setRefreshing(false);
            //What do I put in here??
        }
    });

    return root;
}

private class Content extends AsyncTask<Void,Void,Void> {

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        progressBar.setVisibility(View.VISIBLE);
        //progressBar.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_in));
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        super.onPostExecute(aVoid);
        progressBar.setVisibility(View.GONE);
        //progressBar.startAnimation(AnimationUtils.loadAnimation(getActivity(), android.R.anim.fade_out));
        adapter.notifyDataSetChanged();
    }

    @Override
    protected Void doInBackground(Void... voids) {

        try {
            String url = "https://www.mywebsite.com";

            Document doc = Jsoup.connect(url).get();

            Elements data = doc.select(".thisurl");
            int size = data.size();
            Log.d("doc", "doc: " + doc);
            Log.d("data", "data: " + data);
            Log.d("size", "" + size);
            for (int i = 0; i < size; i++) {
                String date = doc.select(".b-time").eq(i).text();

                String league = doc.select(".card-competition-title").eq(i).text();

                String homeLogo = data.select(".card-vs-left")
                        .select("img")
                        .eq(i)
                        .attr("src");

                String homeTeam = doc.select(".card-vs-left").eq(i).text();

                String awayLogo = data.select(".card-vs-right")
                        .select("img")
                        .eq(i)
                        .attr("src");

                String awayTeam = doc.select(".card-vs-right").eq(i).text();

                String pick = doc.select("span.card-our-prono").eq(i).text();

                sportyParseItems.add(new SportyParseItem(date, league, homeLogo, homeTeam, awayLogo, awayTeam, pick));
                Log.d("items", "img: " + homeLogo + "img:" + awayLogo + " . title: " + league);
            }

        } catch (IOException e) {
            e.printStackTrace();
        }

        return null;
    }
}

Answer 1

swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
    @Override
    public void onRefresh() {
        swipeRefreshLayout.setRefreshing(true);
         content.execute();
    }
});