| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.volley.toolbox; |
| |
| import com.android.volley.NetworkResponse; |
| import com.android.volley.Request; |
| import com.android.volley.Response; |
| import com.android.volley.Response.ErrorListener; |
| import com.android.volley.Response.Listener; |
| import com.android.volley.VolleyLog; |
| |
| import java.io.UnsupportedEncodingException; |
| |
| /** |
| * A request for retrieving a T type response body at a given URL that also |
| * optionally sends along a JSON body in the request specified. |
| * |
| * @param <T> JSON type of response expected |
| */ |
| public abstract class JsonRequest<T> extends Request<T> { |
| /** Default charset for JSON request. */ |
| protected static final String PROTOCOL_CHARSET = "utf-8"; |
| |
| /** Content type for request. */ |
| private static final String PROTOCOL_CONTENT_TYPE = |
| String.format("application/json; charset=%s", PROTOCOL_CHARSET); |
| |
| private final Listener<T> mListener; |
| private final String mRequestBody; |
| |
| /** |
| * Deprecated constructor for a JsonRequest which defaults to GET unless {@link #getPostBody()} |
| * or {@link #getPostParams()} is overridden (which defaults to POST). |
| * |
| * @deprecated Use {@link #JsonRequest(int, String, String, Listener, ErrorListener)}. |
| */ |
| @Deprecated |
| public JsonRequest(String url, String requestBody, Listener<T> listener, |
| ErrorListener errorListener) { |
| this(Method.DEPRECATED_GET_OR_POST, url, requestBody, listener, errorListener); |
| } |
| |
| public JsonRequest(int method, String url, String requestBody, Listener<T> listener, |
| ErrorListener errorListener) { |
| super(method, url, errorListener); |
| mListener = listener; |
| mRequestBody = requestBody; |
| } |
| |
| @Override |
| protected void deliverResponse(T response) { |
| if (mListener != null) { |
| mListener.onResponse(response); |
| } |
| } |
| |
| @Override |
| abstract protected Response<T> parseNetworkResponse(NetworkResponse response); |
| |
| /** |
| * @deprecated Use {@link #getBodyContentType()}. |
| */ |
| @Deprecated |
| @Override |
| public String getPostBodyContentType() { |
| return getBodyContentType(); |
| } |
| |
| /** |
| * @deprecated Use {@link #getBody()}. |
| */ |
| @Deprecated |
| @Override |
| public byte[] getPostBody() { |
| return getBody(); |
| } |
| |
| @Override |
| public String getBodyContentType() { |
| return PROTOCOL_CONTENT_TYPE; |
| } |
| |
| @Override |
| public byte[] getBody() { |
| try { |
| return mRequestBody == null ? null : mRequestBody.getBytes(PROTOCOL_CHARSET); |
| } catch (UnsupportedEncodingException uee) { |
| VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", |
| mRequestBody, PROTOCOL_CHARSET); |
| return null; |
| } |
| } |
| } |