获取网络数据的封装

         public class NetDataUtil {

    /**
     * 获取网络数据的方法
     * @param path
     */
    public static void getData(final String path, Context context, final JsonCallBack callBack){
        //1.获取网络数据之前要判断网络的状态
        if (NetWorkUtil.isConn(context)){
            //可用就去获取数据...在这可以吐司
            AsyncTask<Void, Void, String> asyncTask = new AsyncTask<Void, Void, String>() {
                @Override
                protected String doInBackground(Void... voids) {
                    try {
                        URL url = new URL(path);

                        HttpURLConnection connection = (HttpURLConnection) url.openConnection();

                        connection.setRequestMethod("GET");
                        connection.setReadTimeout(5000);
                        connection.setConnectTimeout(5000);

                        int responseCode = connection.getResponseCode();
                        if (responseCode == 200){
                            InputStream inputStream = connection.getInputStream();

                            String json = StringUtil.streamToString(inputStream,"utf-8");

                            return json;

                        }

                    } catch (Exception e) {
                        e.printStackTrace();
                    }


                    return null;
                }

                @Override
                protected void onPostExecute(String s) {
                    //以前我们做的操作是直接解析....现在在工具类里面通过接口回调的形式,把json格式的数据传递给具体调用这个方法的那个类

                    callBack.getJson(s);

                }
            };

            //执行
            asyncTask.execute();

        }else {
            NetWorkUtil.showNoNetWorkDlg(context);
        }

    }

}

============================接口=====================================

public interface JsonCallBack {
    public void getJson(String json);
}