Is there anyway to observe `BottomSheetScaffoldSta...

# compose

[ziv kesten]

Is there anyway to observe BottomSheetScaffoldState ? i would like to perform an action when its state is BottomSheetValue.Collapsed
I tried using LaunchedEffect but it is not triggered

val bottomSheetScaffoldState = rememberBottomSheetScaffoldState(
                bottomSheetState = BottomSheetState(BottomSheetValue.Expanded)
            )

            SomeComposableWithBottomSheet(state: BottomSheetScaffoldState)

            LaunchedEffect(bottomSheetScaffoldState){
                if (bottomSheetScaffoldState.bottomSheetState.isCollapsed) {
                    onBackPress()
                }
            }

[Albert Chang]

You must remember the BottomSheetState:

val bottomSheetScaffoldState = rememberBottomSheetScaffoldState(
    bottomSheetState = rememberBottomSheetState(BottomSheetValue.Expanded)
)

[Rafs]

LaunchedEffect(bottomSheetScaffoldState.bottomSheetState){
     if (bottomSheetScaffoldState.bottomSheetState.isCollapsed) {
        onBackPress()
    }
 }

[ziv kesten]

I tried:

val bottomSheetScaffoldState = rememberBottomSheetScaffoldState(
                bottomSheetState = rememberBottomSheetState(BottomSheetValue.Expanded)
            )
            SomeComposableWithBottomSheet(bottomSheetScaffoldState)
            LaunchedEffect(bottomSheetScaffoldState.bottomSheetState){
                Log.d("TAG", "bottomSheetState ${bottomSheetScaffoldState.bottomSheetState}")
                if (bottomSheetScaffoldState.bottomSheetState.isCollapsed) {
                    onBackPress()
                }
            }

But i still dont get the log in the launched effect

[Albert Chang]

Should be this

LaunchedEffect(bottomSheetScaffoldState.bottomSheetState.isCollapsed){
    if (bottomSheetScaffoldState.bottomSheetState.isCollapsed) {
        onBackPress()
    }
}

[ziv kesten]

Yes, that is it.
To make it more readable and generic i should be looking at bottomSheetScaffoldState.bottomSheetState.currentValue

Like this:

LaunchedEffect(bottomSheetScaffoldState.bottomSheetState.currentValue){
                if (bottomSheetScaffoldState.bottomSheetState.isCollapsed) {
                    close(visibilityState)
                }
            }

[ziv kesten]

Thank you very much!

[Albert Chang]

I don't see how it is more readable and generic. Actually you are doing extra work with that code as a new coroutine will be launched even if the state change isn't from or to collapsed state.

[ziv kesten]

The reason was that i want to do more with current state than just that condition.

I was simplifying the code for the thread but i would like to respond to expanded as well as collapsed states