interface StoryApiService {
    Observable<List<Integer>> getStories();
}

//...

@Override
protected void onCreate(Bundle savedInstanceState) {
    storyApiService.getStories()
        .compose(RxLoader.<List<Integer>>from(this))
        .subscribeOn(Schedulers.from(AsyncTask.THREAD_POOL_EXECUTOR))
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(new Action1<List<Integer>>() {
            @Override
            public void call(List<Integer> integers) {
                Log.d(TAG, "call() called with: integers = [" + integers + "]");
            }
        }, new Action1<Throwable>() {
            @Override
            public void call(Throwable throwable) {
                Log.e(TAG, "call() called with: throwable = [" + throwable + "]");
            }
        });
}