Question

我有以下代码

 public Retrofit provideRetorift(){

        OkHttpClient okHttpClient = new OkHttpClient().newBuilder()
                .connectTimeout(60, TimeUnit.SECONDS)
                .readTimeout(60, TimeUnit.SECONDS)
                .writeTimeout(60, TimeUnit.SECONDS)
                .build();

        return new Retrofit.Builder()
                .baseUrl(Constant.BASE_URL)
                .client(okHttpClient)
                .addConverterFactory(GsonConverterFactory.create())
                .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
                .addConverterFactory(ScalarsConverterFactory.create())
                .build();
    }

api如下呼叫

 apiService().getApiRespo()
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .retry(5)
                .doOnNext(new Consumer<User>() {
                    @Override
                    public void accept(User user) throws Exception {

                    }
                })
                .subscribe(new Observer<User>() {
                    @Override
                    public void onSubscribe(Disposable d) {

                    }

                    @Override
                    public void onNext(User user) {

                    }

                    @Override
                    public void onError(Throwable e) {

                    }

                    @Override
                    public void onComplete() {

                    }
                });

我已经添加了好的http超时以及rx java重试仍然在我之间连接互联网时它将不会重试。只有在第一次上网时才能正常工作。

我是Android的新手可以任何人帮助我在app尝试调用api之间的互联网连接时自动重试

Answer 1

也许这篇文章对您有用。

https://medium.com/@v.danylo/server-polling-and-retrying-failed-operations-with-retrofit-and-rxjava-8bcc7e641a5a

此代码轮询具有退避功能的服务器，直到接收到不同于204的代码。您应该使用retryWhen而不是repeatWhen，因为您想在出错时重试请求。

fun pollServerWithBackoff(videoId: String, maxAttempts: Int, delay: Int): Flowable<Response<ResponseBody>> {
        return api.download(videoId)
                .subscribeOn(Schedulers.io())
                .repeatWhen {
                    it
                            .zipWith(Flowable.range(1, maxAttempts),
                                    BiFunction { _: Any?, attempt: Int -> attempt })
                            .flatMap {

                                Flowable.timer((it * delay).toLong(), TimeUnit.SECONDS);
                            }

                }
                .takeUntil({

                    it.code() != 204
                })
                .filter {

                    it.code() != 204
                }
                .map{
                    if(it.code() in 200..300)
                        it
                    else
                        throw IOException(it.errorBody()?.toString() ?: "")
                }
    }

改造Rx android重试不起作用

1 个答案: