如何在Android使用OkHttpUtils实现二次封装

  private void onDealLoadmore() {  //资讯的网络请求地址  String newsUrl = Constant.NEWS_URL;  //http://www.oschina.net/action/api/news_list&#63;pageIndex=0&catalog=1&pageSize=20  //关闭SpringView  mSpringView.onFinishFreshAndLoad();  //网络请求  OkHttpUtils    .get()    .url(newsUrl)    .addParams("pageIndex", mCurrentPageIndex + "")//固定    .addParams("catalog", "1")//固定,1代表资讯    .addParams("pageSize", "20")//因为,一页加载20条数据    .build()    .execute(new StringCallback() {     @Override     public void onError(Call call, Exception e, int id) {      Toast.makeText(mContext, "上拉加载失败", Toast.LENGTH_SHORT).show();           }     @Override     public void onResponse(String response, int id) {      //请求成功,将字符串转为javaBean,并获取里面的泛型为News的集合      NewsList newsList = XmlUtils.toBean(NewsList.class, response.getBytes());      //对请求的数据进行非空判断      if (newsList != null) {       List<News> list = newsList.getList();       if (list != null && list.size() > 0) {        //数据的更新        mData.addAll(newsList.getList());        //适配器的更新        mMyNewsPagerAdapter.notifyDataSetChanged();        //请求页的索引要加1        ++mCurrentPageIndex;               }      }     }    }); }