Android代码RxRelay

RxRelay RelaysareRxJavatypeswhicharebothanObservableandaConsumer. Basically:ASubjectexceptwithouttheabilitytocallonCompleteoronError. Subjectsareusefultobridgethegapbetweennon-RxAPIs.However,theyarestatefulinadamaging way:whentheyreceiveanonCompleteoronEr