我正在使用RxJava实现事件总线(RxBus)。RxBus.javapublicclassRxBus{privatestaticfinalStringTAG=LogUtils.makeTag(RxBus.class);privatestaticfinalRxBusINSTANCE=newRxBus();privatefinalSubjectmBusSubject=newSerializedSubject(PublishSubject.create());publicstaticRxBusgetInstance(){returnINSTANCE;}publicSubscriptionr