I have a `BottomSheetScaffold` with the following ...

# compose

[Lukasz Kalnik]

I have a BottomSheetScaffold with the following `scaffoldState`:

val scaffoldState = rememberBottomSheetScaffoldState(
    bottomSheetState = rememberStandardBottomSheetState(
        initialValue = Hidden,
        skipHiddenState = false,
        confirmValueChange = { newValue ->
            println("new value: $newValue")
            if (newValue == Hidden) viewModel.onCodeBottomSheetClosed()
            true
        }
    )
)

However the behavior of the state in confirmValueChange is quite weird (see 🧵).

[Lukasz Kalnik]

Opening bottom sheet with `scaffoldState.bottomSheetState.expand()`:

new value: Expanded
new value: PartiallyExpanded
new value: PartiallyExpanded

[Lukasz Kalnik]

Closing bottom sheet by swipe:

sheet new value: PartiallyExpanded
sheet new value: PartiallyExpanded
sheet new value: Expanded

[Lukasz Kalnik]

Closing bottom sheet by explicitly calling `scaffoldState.bottomSheetState.hide()`:

new value: Hidden
new value: PartiallyExpanded

[Lukasz Kalnik]

Why does it always default to PartiallyExpanded? Why doesn't it go to Hidden state when just swiped, but does so when explicitly calling hide()?

[Lukasz Kalnik]

It doesn't seem to respect the initialValue = Hidden as well.

[Lukasz Kalnik]

As to what my viewModel does in onCodeBottomSheetClicked(), it just sets the sheetContent to an empty lambda.

[Lukasz Kalnik]

Ok, it looks like the solution is to use

bottomSheetState = rememberModalBottomSheetState(
    skipPartiallyExpanded = true,
    confirmValueChange = { newValue ->
        if (newValue == Hidden) viewModel.onCodeBottomSheetClosed()
        true
    }
)

instead of rememberStandardBottomSheetState().

[Chrimaeon]

It’s by definition that the standard bottom sheets are not totally hidden.
https://m3.material.io/components/bottom-sheets/guidelines

[Lukasz Kalnik]

Yes, although when I overwrite the initial state to Hidden I would expect it.

[Lukasz Kalnik]

Also when I swipe it down I expect it to hide.

[Lukasz Kalnik]

Also I set skipHiddenState to false

[Chrimaeon]

No, it’s always peeking up.

[Lukasz Kalnik]

Why then these parameters?