android - 如何在状态代码为 400 时使用 Retrofit 和 RxJava 来获取错误消息？

Question

<分区>

Answer 1

这可以使用 Rx 来完成，方法如下:

mSubscription.add(mDataManager.login(username, password)
                        .subscribeOn(Schedulers.io())
                        .observeOn(AndroidSchedulers.mainThread())
                        .subscribe(new Subscriber<User>() {
                            @Override
                            public void onCompleted() {

                            }

                            @Override
                            public void onError(Throwable e) {
                                if (NetworkUtil.isHttpStatusCode(e, 400) || NetworkUtil.isHttpStatusCode(e, 400)) {
                                    ResponseBody body = ((HttpException) e).response().errorBody();
                                    try {
                                        getMvpView().onError(body.string());
                                    } catch (IOException e1) {
                                        Timber.e(e1.getMessage());
                                    } finally {
                                        if (body != null) {
                                            body.close();
                                        }
                                    }
                                }
                            }

                            @Override
                            public void onNext(User user) {
                              //TODO Handle onNext
                            }
                        }));
            }

网络工具

public class NetworkUtil {

    /**
     * Returns true if the Throwable is an instance of RetrofitError with an
     * http status code equals to the given one.
     */
    public static boolean isHttpStatusCode(Throwable throwable, int statusCode) {
        return throwable instanceof HttpException
                && ((HttpException) throwable).code() == statusCode;
    }
}