df <- structure(list(Firm = c("A","A","B","B"),Year = c(2000L,2001L,2002L,2003L,2004L,2000L,2004L),Moveyear = c(NA,NA,NA),Address = c(NA,OriginAddress = c("","15Grand_Ave","","700Grand_Ave","2730State_st",""),DestinationAddress = c("","20Washington_Ave","40Washington_Ave","")),class = "data.frame",row.names = c(NA,-10L))     

我正在使用以上依赖项。在添加反应流依赖性时， 我收到错误消息我收到错误消息“程序类型已存在：`implementation 'io.reactivex.rxjava3:rxandroid:3.0.0' implementation 'io.reactivex.rxjava3:rxjava:3.0.4' implementation 'androidx.lifecycle:lifecycle-reactivestreams:2.2.0'` 。 我想将可流动对象转换为LiveData。请帮忙。