1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.volley.toolbox; 18 19 import com.android.volley.NetworkResponse; 20 import com.android.volley.ParseError; 21 import com.android.volley.Response; 22 import com.android.volley.Response.ErrorListener; 23 import com.android.volley.Response.Listener; 24 25 import org.json.JSONArray; 26 import org.json.JSONException; 27 28 import java.io.UnsupportedEncodingException; 29 30 /** 31 * A request for retrieving a {@link JSONArray} response body at a given URL. 32 */ 33 public class JsonArrayRequest extends JsonRequest<JSONArray> { 34 35 /** 36 * Creates a new request. 37 * @param url URL to fetch the JSON from 38 * @param listener Listener to receive the JSON response 39 * @param errorListener Error listener, or null to ignore errors. 40 */ 41 public JsonArrayRequest(String url, Listener<JSONArray> listener, ErrorListener errorListener) { 42 super(Method.GET, url, null, listener, errorListener); 43 } 44 45 /** 46 * Creates a new request. 47 * @param method the HTTP method to use 48 * @param url URL to fetch the JSON from 49 * @param jsonRequest A {@link JSONArray} to post with the request. Null is allowed and 50 * indicates no parameters will be posted along with request. 51 * @param listener Listener to receive the JSON response 52 * @param errorListener Error listener, or null to ignore errors. 53 */ 54 public JsonArrayRequest(int method, String url, JSONArray jsonRequest, 55 Listener<JSONArray> listener, ErrorListener errorListener) { 56 super(method, url, (jsonRequest == null) ? null : jsonRequest.toString(), listener, 57 errorListener); 58 } 59 60 @Override 61 protected Response<JSONArray> parseNetworkResponse(NetworkResponse response) { 62 try { 63 String jsonString = new String(response.data, 64 HttpHeaderParser.parseCharset(response.headers, PROTOCOL_CHARSET)); 65 return Response.success(new JSONArray(jsonString), 66 HttpHeaderParser.parseCacheHeaders(response)); 67 } catch (UnsupportedEncodingException e) { 68 return Response.error(new ParseError(e)); 69 } catch (JSONException je) { 70 return Response.error(new ParseError(je)); 71 } 72 } 73 } 74
