Retrotif2+RxJava发送POST请求失败

我想用reformation+RxJava发送POST请求,但是失败了,我不知道原因。在一个活动中它起作用,在另一个活动中-不想起作用:

private void sendMerchantInfo() {
        try {
            String advertiserOriginalDeepLink = "https://mywebsite.com/main-1?param1=value1&param2=value2";
                String urlGetParams = LinkParser.getUrlGETParams(advertiserOriginalDeepLink);

                Map<Object, Object> merchantInfo = LinkParser.parseUrlGetParams(urlGetParams);
                String merchantInfoJson = new Gson().toJson(merchantInfo); //{"param1":"value1","param2":"value2"}

                String url = "https://api.endpoint.com/v1/system/merchant/process";
                userService = this.serviceGenerator.createService(UserService.class, true);
                final Observable observable = userService.sendUserInfo(
                        url, new RetrofitMapBody(merchantInfo))
                        .doOnNext(new Consumer<ResponseBody>() {
                            @Override
                            public void accept(ResponseBody responseBody) throws Exception {
                                //handle 200 OK.
                            }
                        })
                        .onErrorResumeNext((ObservableSource<? extends ResponseBody>) v ->
                                Crashlytics.log("Send user info attempt failed."))
                        .subscribeOn(Schedulers.from(threadExecutor))
                        .observeOn(postExecutionThread.getScheduler());
                addDisposable(observable.subscribe());
            }
        } catch (Exception exception) {
            Crashlytics.log("Send user info attempt failed. " + exception.getMessage());
        }
    }

我怀疑这部分有问题,我正试着提出请求 OnCreate() 方法:

.subscribeOn(Schedulers.from(threadExecutor))
.observeOn(postExecutionThread.getScheduler());

.subscribeOn(Schedulers.io())
.observeOn(AndroidSchedulers.mainThread());

onErrorResumeNext() 可能是线程的问题,因为有一次我遇到异常: networkonmainthreadexception