hard20 pts · first answer countsandroidlifecycle

Observer called twice after back

A fragment observes LiveData with observe(this) in onViewCreated. After navigating away and back, each update fires the callback twice. Why?

A.The fragment outlives its view; use viewLifecycleOwnerB.LiveData always delivers each value twiceC.onViewCreated runs twice per view creationD.The ViewModel was created twice by mistake

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Observer called twice after back

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