如何设计一个在数据下载完成后可以从服务器传递数据的类

我是Android开发新手,最近我在学习如何正确使用MVP模式。

现在我面临一个棘手的问题,希望能从这里得到一些有用的建议或解决方案。

首先,这是我的演示者

public class MVPPresenter {

    private MVPView mvpView;

    public MVPPresenter(MVPView mvpView) {
        this.mvpView = mvpView;
    }

    public void loadData() {
        mvpView.startLoading();
        final List<MVPModel> list = new ArrayList<>();
        //the part that I trying to extract starts here.
        Call call = DataRetriever.getDataByGet(URLCombiner.GET_FRONT_PAGE_ITEMS);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                mvpView.errorLoading();
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                if (response.isSuccessful()) {
                    try {
                        JSONObject result = new JSONObject(response.body().string());
                        int errorCode = result.getInt("ErrorCode");
                        if (errorCode == 0) {
                            JSONArray value = result.getJSONObject("Value").getJSONArray("hot");
                            for (int i = 0; i < value.length(); i++) {
                                MVPModel mvpModel = new MVPModel();
                                String name = null;
                                String image = null;
                                try {
                                    name = value.getJSONObject(i).getString("title");
                                    image = URLCombiner.IP + value.getJSONObject(i).getString("pic");
                                } catch (JSONException e) {
                                    e.printStackTrace();
                                }
                                mvpModel.setName(name);
                                mvpModel.setImage(image);
                                list.add(mvpModel);
                            }
                            if (list.size() > 0) {
                                mvpView.successLoading(list);
                                mvpView.finishLoading();
                            } else {
                                mvpView.errorLoading();
                            }
                        } else {
                            mvpView.errorLoading();
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                } else {
                    mvpView.errorLoading();
                }
            }
        });
        //the part that I trying to extract ends here.
    }
}

我想知道当数据下载完成后,如何将来自服务器的异步数据传递给演示者。

public class LoadServerData {

    private static JSONArray arrayData = new JSONArray();

    public static JSONArray getServerData() {
        Call call = DataRetriever.getDataByGet(URLCombiner.GET_FRONT_PAGE_ITEMS);
        call.enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {

            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                if (response.isSuccessful()) {
                    try {
                        JSONObject result = new JSONObject(response.body().string());
                        int errorCode = result.getInt("ErrorCode");
                        if (errorCode == 0) {
                            arrayData = result.getJSONObject("Value").getJSONArray("hot");  //the data I would like to return.
                        }
                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            }
        });
        return arrayData;   //this is gonna be an empty data.
    }
}

我读了一些文章,可能可以解决我的问题,但仍然没有得到任何好的答案。也许我用错了关键字。希望你们能给我一些想法或解决方案来帮助我或激励我。