Hello all Wondering if someone can point me in the right dir

Question

Hello all Wondering if someone can point me in the right direction to detect any change in value from flow which in a composable I would like to force a recompose even if the value is the same Is this possible Example in reply

Pablichjenkov · Answer

Google Compose state update strategy policy

Pablichjenkov · Answer

There are a couple of strategies to check for equality

Billy Newman · Answer

In view model ```private val flow = MutableSharedFlow lt String gt replay = 1 onBufferOverflow = BufferOverflow DROP OLDEST val flow SharedFlow lt String gt = flow``` Observe in composable ```val noticeToMarinersGraphic by viewModel flow collectAsState null ``` However even when using a shared flow changes in the composable state do not force a recompose if the value is the same Fairly certain that is because compose sees the state as not changing

Kevin Del Castillo · Answer

Compose transforms your state aka the flow value into UI if the state is the same why should it recompose if nothing actually changed

Pablichjenkov · Answer

It could be the case of a container state where equal is not fully well implemented

Billy Newman · Answer

< Kevin Del Castillo> sure so maybe I am thinking about this wrong When a user taps a button I need to perform some background action On completion I want to present a dialog I want to present that dialog every time regardless of if the value has not changed

Kevin Del Castillo · Answer

Then you d have a value in your state describing whether the dialog is visible or not so if for example one time you showed the dialog hiding it means that you change your state to invisible next time you want to show it again by making it visible it ll work because you re changing the state

Billy Newman · Answer

< Kevin Del Castillo> perfect I was thinking about hacking by providing something that changed Your example is not a hack but how it should work I was just not thinking about it that way

Billy Newman · Answer

Thank you

ephemient · Answer

before you mentioned button ~if you have something with a broken `equals` you d absolute be better off fixing that it could be worked around with~ ```val value T by remember mutableStateOf null referentialEqualityPolicy LaunchedEffect flow collect value = it ```

ephemient · Answer

but since you mentioned button events are not state

Kevin Del Castillo · Answer

Events update the state and by updating your state your UI might or might not get recomposed