public StringRequest(int method,
                     String url,
                     com.android.volley.Response.Listener<String> listener,
                     com.android.volley.Response.ErrorListener errorListener)

StringRequest postRequest = new StringRequest(Request.Method.POST, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) { **...** }

package ru.startandroid.bitrix_site_integration;

import android.net.Uri;
import android.os.Bundle;
import android.util.Log;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;

import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.Map;

public class NewsActivity extends MainActivity implements Response.Listener<String> {

    TextView textView;
    LinearLayout ll;
    static final String[] arr = {"ID", "NAME", "PREVIEW_TEXT", "PREVIEW_PICTURE", "PROPERTY_*"};

    private class News {
        String id;
        String name;
        String previewText;
        String previewPicture;

        private News(String id, String name, String previewText, String previewPicture) {
            this.id = id;
            this.name = name;
            this.previewText = previewText;
            this.previewPicture = previewPicture;
        }
    }

    @Override
    public void onResponse(String response) {
        ll.removeAllViews();
        try {
            JSONArray jsonObject = new JSONArray(response);
            if (jsonObject.length() != 0) {
                ArrayList<News> news = new ArrayList<News>();
                for (int i = 0; i < jsonObject.length(); i++) {
                    JSONObject c = jsonObject.getJSONObject(i);
                    News newInfo = new News(
                            c.getString("ID"),
                            c.getString("NAME"),
                            c.getString("PREVIEW_TEXT"),
                            c.getString("PREVIEW_PICTURE")
                    );
                    news.add(newInfo);
                }
                this.setNews(news);
            } else {
                TextView textEmpty = new TextView(this);
                textEmpty.setText("Нет новостей");
                ll.addView(textEmpty);
            }

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

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.news);

        textView = (TextView) findViewById(R.id.textView);
        ll = (LinearLayout) findViewById(R.id.parent);

        RequestQueue queue = Volley.newRequestQueue(this);
        String url = super.siteUrl + super.bitrixApiFolder + "getList.php";
        StringRequest postRequest = new StringRequest(Request.Method.POST, url,
                this,
                new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        // error
                        Log.d("Error.Response", error.getMessage());
                    }
                }
        ) {
            @Override
            protected Map<String, String> getParams() {
                Map<String, String> params = new HashMap<String, String>();

                params.put("IBLOCK_CODE", "furniture_news_s1");

                JSONObject jsonObject = new JSONObject();
                for (Integer i = 0; i < arr.length; i++) {
                    try {
                        jsonObject.put((i.toString()), arr[i]);
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }

                params.put("arSelect", jsonObject.toString());

                return params;
            }
        };
        queue.add(postRequest);

    }

    protected void setNews(ArrayList<News> news) {
        for (News newInfo : news) {
            LinearLayout lln = new LinearLayout(this);
            lln.setOrientation(LinearLayout.HORIZONTAL);
            if (newInfo.previewPicture != null) {
                ImageView image = new ImageView(this);
                image.setImageURI(Uri.parse(newInfo.previewPicture));
            }
        }
    }
}