android - How to remove backstack of fragments when working with TabLayout -


recently developing android app in used bottom navigation , tablayout. when click bottom navigation, bar item dynamically fragment changed bottom navigation

and in bottom bar click , parent fragment open , there 8 more fragments . when click of them tablayout collapsing toolbar open

i confused how manage , remove backstack of tabllayout fragment these framgents not further attach activity. tabllayout further 6 fragments

how can manage fragments remove backstack in tablayout or has approch manage bulk of framgents in app


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