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What's the point of using LiveData in ViewModel if I can use Flow and StateFlow with lifecycleScope \ viewLifecycleOwner.lifecycleScope

原文 2020-07-22 20:37:43 0 1 android/ kotlin/ android-lifecycle/ kotlin-coroutines

Flow has a lot of operators, LiveData has only 3 (Transformations). Is there any reason to keep using LiveData ~~except StateFlow is still experimental~~ ?

UPD. StateFlow, SharedFlow and corresponding operators are promoted to stable API in kotlinx.coroutines 1.4.0

1 answers

There is not much reason to use LiveData nowadays. (State)Flow/Coroutines also brings new possibilites via lifecycleScope.launchWhenCreated/Started/Resumed, hard to do with LiveData.

But there is one reason when LiveData is needed - DataBinding. It currently doesn't support observing Flow.

EDIT: there is going to be support for StateFlow in DataBinding in Android Studio 4.3: https://twitter.com/manuelvicnt/status/1314621067831521282

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What's the point of using LiveData in ViewModel if I can use Flow and StateFlow with lifecycleScope \ viewLifecycleOwner.lifecycleScope

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solution1 11 ACCPTED 2020-07-23 08:19:57

solution1
11 ACCPTED 2020-07-23 08:19:57