question

package bjccproductionsltd.com.basicgo;

import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Response;
import com.android.volley.toolbox.HttpHeaderParser;
import com.android.volley.toolbox.JsonRequest;

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

import java.io.UnsupportedEncodingException;

/**
 * Created by Xtopher on 4/5/2018.
 * From https://stackoverflow.com/a/30859412/588556
 */
public class BulkItemsRequest extends JsonRequest<JSONArray> {
	protected static final String PROTOCOL_CHARSET = "utf-8";
	/**
	 * Creates a new request.
	 *
	 * @param method        the HTTP method to use
	 * @param url           URL to fetch the JSON from
	 * @param requestBody   A {@link String} to post with the request. Null is allowed and
	 *                      indicates no parameters will be posted along with request.
	 * @param listener      Listener to receive the JSON response
	 * @param errorListener Error listener, or null to ignore errors.
	 */
	public BulkItemsRequest(int method, String url, String requestBody, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
		super(method, url, requestBody, listener, errorListener);
	}

	/**
	 * Creates a new request.
	 *
	 * @param url           URL to fetch the JSON from
	 * @param listener      Listener to receive the JSON response
	 * @param errorListener Error listener, or null to ignore errors.
	 */
	public BulkItemsRequest(String url, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
		super(Method.GET, url, null, listener, errorListener);
	}

	/**
	 * Creates a new request.
	 *
	 * @param method        the HTTP method to use
	 * @param url           URL to fetch the JSON from
	 * @param listener      Listener to receive the JSON response
	 * @param errorListener Error listener, or null to ignore errors.
	 */
	public BulkItemsRequest(int method, String url, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
		super(method, url, null, listener, errorListener);
	}

	/**
	 * Creates a new request.
	 *
	 * @param method        the HTTP method to use
	 * @param url           URL to fetch the JSON from
	 * @param jsonRequest   A {@link JSONArray} to post with the request. Null is allowed and
	 *                      indicates no parameters will be posted along with request.
	 * @param listener      Listener to receive the JSON response
	 * @param errorListener Error listener, or null to ignore errors.
	 */
	public BulkItemsRequest(int method, String url, JSONArray jsonRequest, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
		super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener, errorListener);
	}


	/**
	 * Creates a new request.
	 *
	 * @param method        the HTTP method to use
	 * @param url           URL to fetch the JSON from
	 * @param jsonRequest   A {@link JSONObject} to post with the request. Null is allowed and
	 *                      indicates no parameters will be posted along with request.
	 * @param listener      Listener to receive the JSON response
	 * @param errorListener Error listener, or null to ignore errors.
	 */
	public BulkItemsRequest(int method, String url, JSONObject jsonRequest, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
		super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener, errorListener);
	}

	/**
	 * Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is
	 * <code>null</code>, <code>POST</code> otherwise.
	 * <p>
	 * see #MyjsonPostRequest(int, String, JSONArray, Listener, ErrorListener)
	 */
	public BulkItemsRequest(String url, JSONArray jsonRequest, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
		this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest, listener, errorListener);
	}


	/**
	 * Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is
	 * <code>null</code>, <code>POST</code> otherwise.
	 * <p>
	 * see #MyjsonPostRequest(int, String, JSONObject, Listener, ErrorListener)
	 */
	public BulkItemsRequest(String url, JSONObject jsonRequest, Response.Listener<JSONArray> listener, Response.ErrorListener errorListener) {
		this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest, listener, errorListener);
	}


	@Override
	protected Response<JSONArray> parseNetworkResponse(NetworkResponse response) {
		try {
			String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
			return Response.success(new JSONArray(jsonString), HttpHeaderParser.parseCacheHeaders(response));
		} catch (UnsupportedEncodingException e) {
			return Response.error(new ParseError(e));
		} catch (JSONException je) {
			return Response.error(new ParseError(je));
		}
	}
}

String TAG = "BulkItemsTest";
RequestQueue mRequestQueue = Volley.newRequestQueue(this);
org.json.JSONObject bulkItems = new JSONObject();
org.json.JSONArray ja = new JSONArray();
org.json.JSONObject jo;
try {
	for (int i = 0; i < 3; i++) {
		jo = new JSONObject();
		jo.put("name", IdUtils.getRandomString(6));
		jo.put("price", (long) random.nextInt(2000));
		jo.put("quantitySold", df.format(random.nextDouble() * 10));
		jo.put("unitName", "ea");
		ja.put(jo);
	}
	bulkItems.put("items", ja);

	String url = "https://apisandbox.dev.clover.com/v3/merchants/ ID>/orders/<Order ID>/bulk_line_items?access_token=<OAuth access_token>";

	BulkItemsRequest jsonObjReq = new BulkItemsRequest(url, bulkItems, new Response.Listener<JSONArray>() {
		@Override
		public void onResponse(JSONArray response) {
			Log.d(TAG, "Add bulk line items response was : " + response);
		}
	}, new Response.ErrorListener() {
		@Override
		public void onErrorResponse(VolleyError error) {
			Log.d(TAG, "That didn't work! : " + error.getMessage());
		}
	});
	// Add the request to the RequestQueue.
	mRequestQueue.add(jsonObjReq);
} catch (JSONException e) {
	e.printStackTrace();
}