在界面实现代码

MyTask myTask = new MyTask(new MyTask.Icallbacks() {
        @Override
        public void updateUiByjson(String jsonstr) {
            Gson gson = new Gson();
            ReqBean reqBean = gson.fromJson(jsonstr, ReqBean.class);
            List<ReqBean.NewslistBean> newslist = reqBean.getNewslist();
            MaAdapter maAdapter = new MaAdapter(MainActivity.this, newslist);
            lv.setAdapter(maAdapter);
        }
    });
    myTask.execute("http://api.tianapi.com/huabian/?key=48a7d7193e11bd2dd4a683b6e2f90a4f&num=10");
}