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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.volley.toolbox;
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import com.android.volley.NetworkResponse;
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import com.android.volley.ParseError;
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import com.android.volley.Response;
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import com.android.volley.Response.ErrorListener;
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import com.android.volley.Response.Listener;
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import org.json.JSONException;
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import org.json.JSONObject;
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import java.io.UnsupportedEncodingException;
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/**
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* A request for retrieving a {@link JSONObject} response body at a given URL, allowing for an
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* optional {@link JSONObject} to be passed in as part of the request body.
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*/
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public class JsonObjectRequest extends JsonRequest<JSONObject> {
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/**
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* Creates a new request.
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* @param method the HTTP method to use
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* @param url URL to fetch the JSON from
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* @param jsonRequest A {@link JSONObject} to post with the request. Null is allowed and
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* indicates no parameters will be posted along with request.
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* @param listener Listener to receive the JSON response
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* @param errorListener Error listener, or null to ignore errors.
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*/
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public JsonObjectRequest(int method, String url, JSONObject jsonRequest,
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Listener<JSONObject> listener, ErrorListener errorListener) {
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super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener,
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errorListener);
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}
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/**
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* Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is
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* <code>null</code>, <code>POST</code> otherwise.
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*
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* @see #JsonObjectRequest(int, String, JSONObject, Listener, ErrorListener)
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*/
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public JsonObjectRequest(String url, JSONObject jsonRequest, Listener<JSONObject> listener,
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ErrorListener errorListener) {
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this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest,
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listener, errorListener);
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}
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@Override
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protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
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try {
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String jsonString = new String(response.data,
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HttpHeaderParser.parseCharset(response.headers, PROTOCOL_CHARSET));
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return Response.success(new JSONObject(jsonString),
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HttpHeaderParser.parseCacheHeaders(response));
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} catch (UnsupportedEncodingException e) {
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return Response.error(new ParseError(e));
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} catch (JSONException je) {
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return Response.error(new ParseError(je));
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}
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}
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}
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