populating recyclerView with json data

public class FeedItem {
    private String hehw, hesub;

    String getHehw() {
        return hehw;
    }

    public void setHehw(String pname) {
        this.hehw = pname;
    }

    String getHesub() {
        return hesub;
    }

    public void setHesub(String name) {
        this.hesub = name;
    }    
}

private List<FeedItem> feedItemList;
    private Context mContext;

    public MyRecyclerAdapter(Context context, List<FeedItem> feedItemList) {
        this.feedItemList = feedItemList;
        this.mContext = context;
    }

    @Override
    public CustomViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View view = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.main_adapter, null);

        CustomViewHolder viewHolder = new CustomViewHolder(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(CustomViewHolder customViewHolder, int i) {
        FeedItem feedItem = feedItemList.get(i);

       
        //Setting text view title
        customViewHolder.textView.setText(Html.fromHtml(feedItem.getHehw()));
        customViewHolder.textView.setText(Html.fromHtml(feedItem.getHesub()));
    }

    @Override
    public int getItemCount() {
        return (null != feedItemList ? feedItemList.size() : 0);
    }

    public class CustomViewHolder extends RecyclerView.ViewHolder {
       // protected ImageView imageView;
        protected TextView textView,textView1;

        public CustomViewHolder(View view) {
            super(view);
            //this.imageView = (ImageView) view.findViewById(R.id.thumbnail);
            this.textView = (TextView) view.findViewById(R.id.HeHw);
            this.textView1= (TextView) view.findViewById(R.id.HeSub);
        }
    }

@Override
        protected void onPostExecute(Integer result) {
            // Download complete. Let us update UI
            //progressBar.setVisibility(View.GONE);

            if (result == 1) {
                adapter = new MyRecyclerAdapter(MainActivity.this, feedsList);
                mRecyclerView.setAdapter(adapter);
            } else {
                Toast.makeText(MainActivity.this, "Failed to fetch data!", Toast.LENGTH_SHORT).show();
            }
        }

private void parseResult(String result) {
        try {
            JSONObject response = new JSONObject(result);
            JSONArray posts = response.optJSONArray("RESTMethod");
            feedsList = new ArrayList<>();

            for (int i = 0; i < posts.length(); i++) {
                JSONObject post = posts.optJSONObject(i);
                FeedItem item = new FeedItem();
                item.setHehw(post.optString("ID"));
                item.setHesub(post.optString("SERIAL_NUMBER"));
                feedsList.add(item);
            }
        } catch (JSONException e) {
            e.printStackTrace();
        }