如何处理SyncOnSubscribe RxJava中generateState中的错误？

我试图掌握创建SyncOnSubscribe的诀窍，但不太确定如果

generateState

方法在状态初始化期间失败，该怎么办

return Observable.create(new SyncOnSubscribe<MyState, String>() {
    @Override
    protected MyState generateState() {
        return new MyState();   // <---- what if this fails?
    }

    @Override
    protected MyState next(MyState state, Observer<? super String> observer) {
        // do something with state
    }
});

---

使用上面的

main

函数

getEventsOnSubscribe1

和

getEventsSyncOnSubscribe

都调用订阅者

onError

，但它们会使程序挂起。使用包装异常并手动调用

s.onError

的

geteventsonsubscribebe2

，程序可以退出。

这似乎是一个使用

SyncOnSubscribe

处理错误的错误。我会发布一个修复程序soon@akarnokd我可能弄错了，我似乎无法重现我之前看到的内容-程序没有退出可能是由于另一个库生成了守护进程线程。如果我再次看到这个问题，我会在这里回复。谢谢这似乎是处理

SyncOnSubscribe

的错误。我会发布一个修复程序soon@akarnokd我可能弄错了，我似乎无法重现我之前看到的内容-程序没有退出可能是由于另一个库生成了守护进程线程。如果我再次看到这个问题，我会在这里回复。谢谢

public static Observable<String> getEventsOnSubscribe1() {
    return Observable.create((s) -> {
        throw new UnsupportedOperationException("getEvents3");
    });
};

/** Like 'getEventsOnSubscribe1' but wrap exception and call onError manually.  */
public static Observable<String> getEventsOnSubscribe2() {
    return Observable.create((s) -> {
        try {
            throw new UnsupportedOperationException("getEvents3");
        } catch (Exception ex) {
            s.onError(ex);
        }
    });
};

public static Observable<String> getEventsSyncOnSubscribe() {
    return Observable.create(new SyncOnSubscribe<Channel, String>() {
        @Override
        protected Channel generateState() {
            System.out.println("SyncOnSubscribe.generateState");
            throw new UnsupportedOperationException("Not supported yet.");
        }

        @Override
        protected Channel next(Channel state, Observer<? super String> observer) {
            System.out.println("SyncOnSubscribe.next");
            throw new UnsupportedOperationException("Not supported yet.");
        }

        @Override
        protected void onUnsubscribe(Channel state) {
            System.out.println("SyncOnSubscribe.onUnsubscribe");
            throw new UnsupportedOperationException("Not supported yet.");
        }
    });
}

public static void main(String[] args) throws IOException, TimeoutException {
    getEventsOnSubscribe1()
    //getEventsOnSubscribe2()
    //getEventsOnSyncSubscribe()
            .toBlocking()
            .subscribe(new Subscriber<String>() {
                @Override
                public void onCompleted() {
                    System.out.println("onCompleted");
                }

                @Override
                public void onError(Throwable e) {
                    System.out.println("onError: " + e.getLocalizedMessage());
                }

                @Override
                public void onNext(String t) {
                    System.out.println("onNext: " + t);
                }
            });
}