Question

我正在查看以MVP编码的Android应用程序示例（link here）。但是现在我想将教程中给定的RxJava1代码重新编码为RxJava2代码。但是，我遇到了问题，尤其是unSubscribe()和isUnSubscribed()。我试图转换它，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();
    }
  }

这是我对RxJava2代码的尝试：

  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的概念相当新。如果有人能指出我的错误并指导我那将是伟大的。：）

Answer 1

我为迟到的答案道歉。一直都很忙。正如@akarnokd所述，与RxJava1相比，RxJava2已经做了很多改变。如果您有兴趣，请查看video。

就上述问题而言，我们可以使用<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <div class=""> <div class="form-group"> <label for="first">Dummy text 1</label> <select id="first" class="mapped" select-group="first"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> </div> </div> <div class=""> <div class="form-group"> <select id="first" class="mapped" select-group="first"> <option>Dummy text 1</option> <option>1</option> <option>2</option> <option>3</option> <option>4</option> </select> </div> </div> <div class=""> <div class="form-group"> <label for="second">Dummy text 2</label> <select id="second" class="mapped" select-group="second"> <option>1</option> <option>2</option> <option>3</option> <option>4</option> <option>5</option> </select> </div> </div> <div class=""> <div class="form-group"> <select id="second" class="mapped" select-group="second"> <option>Dummy text 2</option> <option>1</option> <option>2</option> <option>3</option> <option>4</option> </select> </div> </div>

来实现同样的目标

以上是上述问题的答案。我测试了它并且它有效。

DisposableObservables

从RxJava1迁移到RxJava2

1 个答案: