Question

我需要在与subscribeOn相同的主题中运行Observable操作。我找到了一个解决方案，但似乎并不是最好的。基本上我使用相同的scheduler用于初始observable和observable doOnSubscribe返回：

Scheduler singleThreadScheduler = Schedulers.from(Executors.newSingleThreadExecutor());

Observable<Object> obs = Observable.create(subscriber -> {

    System.out.println("onNext at: " + Thread.currentThread());

    subscriber.onNext(new Object());
    subscriber.onCompleted();

}).subscribeOn(singleThreadScheduler).observeOn(Schedulers.newThread());

obs = obs.doOnSubscribe(() -> System.out.println("doOnSubscribe at: " + Thread.currentThread())).subscribeOn(singleThreadScheduler);

obs.subscribe(o -> {
    System.out.println("result at: " + Thread.currentThread());
});

日志：

doOnSubscribe at: Thread[pool-1-thread-1] //runs on the same thread
onNext at: Thread[pool-1-thread-1]        //runs on the same thread
result at: Thread[RxNewThreadScheduler-1]

有没有更好或更标准的方法来实现它？

Answer 1

正如akarnokd所说，我在问题中提到的解决方案只有一个。

在与Observable相同的线程中运行subscribeOn操作

1 个答案: