Handler handler = new Handler() {

        @Override

        public void handleMessage(Message msg) {

            super.handleMessage(msg);

            Bundle data = msg.getData();

            String val = data.getString("value");

            Toast.makeText(MainActivity.this, "获得的结果是:"+val, Toast.LENGTH_SHORT).show();

        }

    };

Runnable networkTask = new Runnable() {

        @Override

        public void run() {

            // TODO

            // 在这里进行 http request.网络请求相关操作

            GetServiceJsonData getJson=new GetServiceJsonData();

            String getStr = getJson.getServerInfo("");

            Message msg = new Message();

            Bundle data = new Bundle();

            data.putString("value", getStr);

            msg.setData(data);

            handler.sendMessage(msg);

        }

    };