我使用RxJava进行了多个网络通话，但正在获取网络通话的响应，但在Object中显示为null

Question

我是Retrofit和RX Java的新手，我正尝试使用以下服务一次进行多个Web调用：@GET（“ xxxxxx / {name} / images / random”）Observable getImage（@Path（“ name” ）字符串名称）；

public List<String> getBreedImages(List<String> id){
            Retrofit retrofit = new Retrofit.Builder().baseUrl("https://xxxxx/api/")
                    .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                    .addConverterFactory(GsonConverterFactory.create())
                    .client(client)
                    .build();

            Service service = retrofit.create(Service.class);
            List<Observable<?>> requests = new ArrayList<>();

            // Make a collection of all requests you need to call at once.
            for(int i=0;i<id.size();i++){
                requests.add(service.getImage(id.get(i)));
            }

            // Zip all requests with the Function, which will receive the results.
            Observable.zip(
                    requests,
                    new Function<Object[], Object>() {
                        @Override
                        public Object apply(Object[] objects) throws Exception {
                            // Objects[] is an array of combined results of completed requests
                            for (int i = 0; i < objects.length; i++) {
                                Log.d("CHECK RESPONCE : ", "" + objects[i].toString());//here it is coming null
                            }
                            return new Object();
                        }
                    })
                    .subscribe()
                            new Consumer<Object>() {
                                @Override
                                public void accept(Object o) throws Exception {
                                    Log.d("RESPONSE : ", o.toString());
                                }
                            },
                            new Consumer<Throwable>() {
                                @Override
                                public void accept(Throwable e) throws Exception {
                                    //Do something on error completion of requests
                                    Log.d("ERROR : ", e.toString());
                                }
                            }
                    );
            return id;
        }

public class ImageResultResponse {

    ImageResult imageResults;

    public ImageResult getImageResults() {
        return imageResults;
    }}

class ImageResult
{
    String status;
    String message;

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }}


Combined web call Response :
[{"message":"https:\/\/xxxxxxx/wolfhound-irish\/n02090721_4326.jpg","status":"success"}, 
{"message":"https:\/\/xxxxxxx/wolfhound-irish\/n02090721_4326.jpg","status":"success"},...........{"message":"https:\/\/xxxxxx/wolfhound-irish\/n02090721_4326.jpg","status":"success"}]

我从网络调用中得到了以上响应，但是在Observable.zip apply函数中，我得到了所有对象，但具有空值。