xutils和Gson解析Json数据

/**
*
* 字段名字必须和服务器返回的字段名一致, 方便gson解析
*
*/
public class NewsData {

public int retcode;
public ArrayList<NewsMenuData> data;

// 侧边栏数据对象
public class NewsMenuData {
public String id;
public String title;
public int type;
public String url;

public ArrayList<NewsTabData> children;

@Override
public String toString() {
return "NewsMenuData [title=" + title + ", children=" + children
+ "]";
}
}

// 新闻页面下11个子页签的数据对象
public class NewsTabData {
public String id;
public String title;
public int type;
public String url;

@Override
public String toString() {
return "NewsTabData [title=" + title + "]";
}
}

@Override
public String toString() {
return "NewsData [data=" + data + "]";
}

}

/**
* 从服务器获取数据
*/
private void getDataFromServer() {
HttpUtils utils = new HttpUtils();

// 使用xutils发送请求
utils.send(HttpMethod.GET, GlobalContants.CATEGORIES_URL,
new RequestCallBack<String>() {

// 访问成功, 在主线程运行
@Override
public void onSuccess(ResponseInfo responseInfo) {
String result = (String) responseInfo.result;
System.out.println("返回结果:" + result);

parseData(result);
}

// 访问失败, 在主线程运行
@Override
public void onFailure(HttpException error, String msg) {
Toast.makeText(mActivity, msg, Toast.LENGTH_SHORT)
.show();
error.printStackTrace();
}

});
}

/**
* 解析网络数据
*
* @param result
*/
protected void parseData(String result) {
Gson gson = new Gson();
mNewsData = gson.fromJson(result, NewsData.class);
System.out.println("解析结果:" + mNewsData);

System.out.println("解析结果:" + mNewsData.retcode);