Volley自定义Request
2016-10-10 本文已影响92人
AmeeLove
自定义Request
public class StringRequest extends Request<String> {
//监听器
private final Listener<String> mListener;
//构造方法 这时一定要调用super
public StringRequest(int method, String url, Listener<String> listener, ErrorListener errorListener) {
super(method, url, errorListener);
this.mListener = listener;
}
//调用上面的方法
public StringRequest(String url, Listener<String> listener, ErrorListener errorListener) {
this(0, url, listener, errorListener);
}
//只是deliverResponse()方法中的实现很简单，仅仅是调用了mListener中的onResponse()方法，并将response内容传入即可，这样就可以将服务器响应的数据进行回调了
protected void deliverResponse(String response) {
this.mListener.onResponse(response);
}
protected Response<String> parseNetworkResponse(NetworkResponse response) {
String parsed;
try {
//parseCharset字符编码
parsed = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
} catch (UnsupportedEncodingException var4) {
parsed = new String(response.data);
}
//头信息
return Response.success(parsed, HttpHeaderParser.parseCacheHeaders(response));
}
}
由于Request类中的deliverResponse()和parseNetworkResponse()是两个抽象方法，
因此StringRequest中需要对这两个方法进行实现。deliverResponse()方法中的实现很简单，仅仅是调用了mListener中的onResponse()方法，并将response内容传入即可，这样就可以将服务器响应的数据进行回调了。
parseNetworkResponse()方法中则应该对服务器响应的数据进行解析,其中数据是以字节的形式存放在NetworkResponse的data变量中的，这里将数据取出然后组装成一个String，并传入Response的success()方法中即可。
自定义GsonRequest
package com.liu.volleydemo.requestion;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.toolbox.HttpHeaderParser;
import com.google.gson.Gson;
import java.io.UnsupportedEncodingException;
/**
* @Description: 描述
* @AUTHOR 刘楠 Create By 2016/9/26 0026 18:11
*/
public class GsonRequest<T> extends Request<T> {
private final Response.Listener<T> mListener;
private Gson mGson;
private Class<T> mClazz;
public GsonRequest(int method, String url, Class<T> clazz, Response.Listener<T> listener, Response.ErrorListener errorListener) {
super(method, url, errorListener);
this.mListener = listener;
mGson= new Gson();
mClazz = clazz;
}
public GsonRequest(String url, Class<T> clazz, Response.Listener<T> listener, Response.ErrorListener errorListener) {
this(Method.GET, url, clazz, listener, errorListener);
}
@Override
protected void deliverResponse(T response) {
mListener.onResponse(response);
}
@Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
/**
* 获取数据
*/
String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
// 转化反回
return Response.success(mGson.fromJson(jsonString, mClazz), HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
return Response.error(new ParseError(e));
}
}
}
=================BEAN==========
package com.liu.volleydemo.bean;
import java.util.List;
/**
* @Description: 描述
* @AUTHOR 刘楠 Create By 2016/9/26 0026 18:36
*/
public class WeixinSelected {
public String reason;
public ResultEntity result;
public int error_code;
@Override
public String toString() {
return "WeixinSelected{" +
"reason='" + reason + '\'' +
", result=" + result +
", error_code=" + error_code +
'}';
}
public static class ResultEntity {
public int totalPage;
public int ps;
public int pno;
@Override
public String toString() {
return "ResultEntity{" +
"totalPage=" + totalPage +
", ps=" + ps +
", pno=" + pno +
", list=" + list +
'}';
}
public List<ListEntity> list;
public static class ListEntity {
public String firstImg;
public String id;
public String source;
public String title;
public String url;
public String mark;
@Override
public String toString() {
return "ListEntity{" +
"firstImg='" + firstImg + '\'' +
", id='" + id + '\'' +
", source='" + source + '\'' +
", title='" + title + '\'' +
", url='" + url + '\'' +
", mark='" + mark + '\'' +
'}';
}
}
}
}
请求
final RequestQueue requestQueue = MyVolley.getRequestQueue(this);
String url ="http://v.juhe.cn/weixin/query";
final String appkey ="24834287692b8d54cf634668ce5de0b4";
GsonRequest<WeixinSelected> gsonRequest = new GsonRequest<WeixinSelected>(Request.Method.POST,url, WeixinSelected.class, new Response.Listener<WeixinSelected>() {
@Override
public void onResponse(WeixinSelected weixinSelected) {
Log.d("vivi", "onResponse: "+weixinSelected.toString());
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
volleyError.printStackTrace();
Log.d("vivi", "onErrorResponse: "+volleyError.getMessage());
}
}){
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String,String> params = new HashMap<>();
params.put("key",appkey);
return params;
}
};
requestQueue.add(gsonRequest);
日志
WeixinSelected{reason='success', result=ResultEntity{totalPage=25, ps=20, pno=1, list=[ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-8255071.jpg/640', id='wechat_20160915039850', source='功夫体育', title='女排冠军们“高”人一等，谁敢娶？', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160915039850', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-8575838.jpg/640', id='wechat_20151201058612', source='龍神迷失', title='中国首辆上牌的布加迪威龙，以为车牌很一般，最后发现车牌很霸气', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20151201058612', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-8206632.jpg/640', id='wechat_20160102022165', source='篮球频道', title='【球迷关注点】书豪:一度想退役不再打球 曾被科比一句蔑视激怒', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160102022165', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-8064767.jpg/640', id='wechat_20160908053966', source='娱乐圈扒姐', title='某知名女星在节目中威胁选手收贿，私下爱搞潜规则', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160908053966', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986866.jpg/640', id='wechat_20160906017693', source='颜小白的篮球梦', title='科比跟乔丹比到底差在哪里？仅仅是身体素质吗', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906017693', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986843.jpg/640', id='wechat_20160906017663', source='嘻嘻哈哈', title='神动图|这手感绝对不差！', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906017663', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986833.jpg/640', id='wechat_20160906017658', source='嘻嘻哈哈', title='江湖流传的这些奇葩书，简直刷新我的三观~', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906017658', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986819.jpg/640', id='wechat_20160906017552', source='笑你妹', title='【搞笑段子】有心无力啊，办起事来几分钟完事~', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906017552', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986802.jpg/640', id='wechat_20160906017288', source='TechWeb', title='在iPhone7发布之前我们先来看看它的跑分吧', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906017288', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986693.jpg/640', id='wechat_20160906016354', source='陇南生活网', title='甘肃：将发生严重腐败问题的地区部门直接评为“一般”', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906016354', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986675.jpg/640', id='wechat_20160906016213', source='云上的空母', title='万吨两栖舰上的袖珍火炮，射速为每分钟200发', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906016213', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986645.jpg/640', id='wechat_20160906016204', source='云上的空母', title='全球最大口径的加特林机关炮，一眨眼打出50发炮弹', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906016204', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986534.jpg/640', id='wechat_20160906015882', source='钛媒体', title='三星耗10亿美元召回Note7，并称损失令人real心痛钛晨报', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20160906015882', mark=''}, ListEntity{firstImg='http://zxpic.gtimg.com/infonew/0/wechat_pics_-7986438.jpg/640', id='wechat_20160906015702', source='摄影笔记', title='一篇文章看懂尼康数码单反', url='http://v.juhe.cn/weixin/redirect?wid=wechat_20
