java - What to do in Espresso when the recyclerView itself returns AmbiguousViewMatcherException? -

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the problem have tabbed view, , each page contains same recyclerview different data pertaining tab. if i'm not describing well, it's same described in tutorial: https://github.com/codepath/android_guides/wiki/viewpager-with-fragmentpageradapter

i creating instrumentation tests using espresso, , when try call 

onview(withid(r.id.recycler_view)

to use recyclerviewaction, returned ambiguousviewmatcher telling me there more 1 recyclerview in hierarchy. how can specify particular recyclerview? assume need 'customrecyclerviewmatcher' of sort

ok! first needed give each view tag (see petey's answer how catch view tag espresso in android?)

i found oncreate , added:

recyclerview.settag(screentab.getid())

which enabled me set within test class (fyi i'm using kotlin)

  private val tab1recyclerview = onview(       allof(           withid(r.id.recycler_view),           withtagvalue(`is`(id.tab1))       )   )

so tests begin :

@test fun tab1test() { tab1recyclerview.perform(recyclerviewactions.actiononitematposition... etc }




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