ios - Rx ItemSelected doing action depend on how much action triggered -


i wanna ask rxswift.
got problem when want use tableview delegate function rxswift
don't know source of problem ..
problem when select on cell rx.itemselected , got cell position , event triggered @ first time.
event pushviewcontroller , when pressed previous view. after that, tap again on same cell .. cell triggered twice , if same thing, it'll triggered incremental 1 -> 2 -> 3 -> n+1
there way fix ? here's partial of code :

root.tableview.rx.itemselected.subscribe(onnext: { index in     switch index.row :     case 0 :     dsource.navbar?.pushviewcontroller(nextviewcontroller, animated: true)     case 1:     source.navbar?.pushviewcontroller(secondviewcontroller, animated: true)     default :     break  }

add disposablebag remove subscription. 

let disposebag = disposebag()          root.tableview.rx.itemselected.subscribe(onnext: { index in             switch index.row             case 0: dsource.navbar?.pushviewcontroller(nextviewcontroller, animated: true)             case 1: source.navbar?.pushviewcontroller(secondviewcontroller, animated: true)             default :  break         }).adddisposableto(disposebag)

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