How to get return in retrofit 2 in async request?

Question

Java

I want to receive a return in an asynchronous request, I understand that the response will come later and will call the method, but I need to contact it and get the answer right away or so that it would hold the completion of the
function to receive the response:

public void loadMyMuvi(){
        Retrofit retrofit = new Retrofit.Builder()
                .baseUrl("http://192.168.0.105:8000")
                .addConverterFactory(GsonConverterFactory.create())
                .build();
        final MyApiRequestInterface request = retrofit.create(MyApiRequestInterface.class);
        Call<MyMuviResponse> call = request.getMyMuvi();
        call.enqueue(new Callback<MyMuviResponse>() {

            @Override
            public void onResponse(Call<MyMuviResponse> call, Response<MyMuviResponse> response) {
                MyMuviResponse myMuviResponse = response.body();

                if (myMuviResponse.getStatus() == "true") {
                    data = new ArrayList<>(Arrays.asList(myMuviResponse.getMyMuvi()));
                } else {
                    Log.d(TAG, "нет данных по запросу");
                }

            }

            @Override
            public void onFailure(Call<MyMuviResponse> call, Throwable t) {
                Log.d("Error", t.getMessage());
            }
        });
    }

Answer 1

display a circle, etc. until there is an answer.
Answer a onfailure or onresponse
Why block anything at all? Bad practice.
You can stir up events (most likely), but why?

Answer 2

@Override
    public Response load(Uri uri, int networkPolicy) throws IOException {
        final AtomicReference<Object> notifier = new AtomicReference<>();
        serverId = "https://" + Utils.API_SERVER_HTTP + "/download/" + serverId;
        fileDownloader = new FileDownloader(serverId, outPath, true, new FileDownloader.IFileDownloaderListener() {
            @Override
            public void onProgress(int progress) {
            }
            @Override
            public void onSuccess() {
                synchronized (notifier) {
                    try {
                        notifier.set(new Response(decodeBitmap(outPath), false));
                    } catch (Exception ex) {
                        ex.printStackTrace();
                        notifier.set(new Exception());
                    } finally {
                        notifier.notify();
                    }
                }
            }
            @Override
            public void onError() {
                synchronized (notifier) {
                    notifier.set(new Exception());
                    notifier.notify();
                }
            }
        }, staticHandler);
        fileDownloader.execute();
        synchronized (notifier) {
            try {
                while (notifier.get() == null)
                    notifier.wait();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }

        if (notifier.get() instanceof Exception)
        {
            throw new ResponseException("File cannot be downloaded", 0, 404);
        }
        return (Response) notifier.get();
    }