从RxJava1迁移到RxJava2

Question

我看了一个用MVP (链接在这里)编写的安卓应用程序的例子。但是现在我想将本教程中给定的RxJava1代码重新编码为RxJava2代码。然而，我对它有困难，特别是unSubscribe()和isUnSubscribed()。我试图改变它，我将分享我的尝试。

RxJava1代码：

  public void doLogin(AuthCredentials credentials) {
    cancelSubscription();
    subscriber = new Subscriber<Account>() {
      @Override public void onCompleted() {
        if (isViewAttached()) {
          getView().loginSuccessful();
        }
      }

      @Override public void onError(Throwable e) {
        if (isViewAttached()) {
          getView().showError();
        }
      }

      @Override public void onNext(Account account) {
        eventBus.post(new LoginSuccessfulEvent(account));
      }
    };

    // do login
    accountManager.doLogin(credentials)
        .subscribeOn(Schedulers.io())
        .observeOn(AndroidSchedulers.mainThread())
        .subscribe(subscriber);
  }
  private void cancelSubscription() {
    if (subscriber != null && !subscriber.isUnsubscribed()) {
      subscriber.unsubscribe();
    }
  }

这是我在RxJava2代码上的尝试：

  public void doLogin(AuthCredentials credentials) {
    cancelSubscription();
    subscriber = new Subscriber<Account>() {

      @Override public void onSubscribe(Subscription s) {
        // do login
        accountManager.doLogin(credentials)
                      .subscribeOn(Schedulers.io())
                      .observeOn(AndroidSchedulers.mainThread())
                      .subscribe(subscriber);
      }

      @Override public void onCompleted() {
        if (isViewAttached()) {
          getView().loginSuccessful();
        }
      }

      @Override public void onError(Throwable e) {
        if (isViewAttached()) {
          getView().showError();
        }
      }

      @Override public void onNext(Account account) {
        eventBus.post(new LoginSuccessfulEvent(account));
      }
    };
  }


  private void cancelSubscription() {   
    //isUnsubscribed and unsubscribe doesnt work anymore
  }

我对RxJava的概念相当陌生。如果有人能指出我的错误并指导我，那就太好了。:)

Answer 1

我为迟到的答复道歉。一直都很忙。正如@akarnokd所述，与RxJava2相比，RxJava1做了许多更改。对于那些感兴趣的人，请看这个视频。

就上述问题而言，我们可以使用DisposableObservables实现同样的目标。

以下是上述问题的答案。我已经测试过了，而且效果很好。

public void doLogin(AuthCredentials credentials) {
     myDisposableObserver = new DisposableObserver<Account>() {
                @Override
                public void onNext(Account account) {
                    eventBus.post(new LoginSuccessfulEvent(account));
                }

                @Override
                public void onError(Throwable e) {
                    if (isViewAttached()) {
                        getView().showError();
                    }
                }

                @Override
                public void onComplete() {
                    if (isViewAttached()) {
                        getView().loginSuccessful();
                    }
                }
            };

            // do login
            accountManager.doLogin(credentials)
                .subscribeOn(Schedulers.io())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(subscriber);
        }
    }

    private void cancelSubscriptionToMyPrescriptorManager() {
        if (myDisposableObserver != null && !myDisposableObserver.isDisposed()) {
            myDisposableObserver.dispose();
        }
    }