This is a flexible BottomSheet that is consistent with the API of BottomSheetScaffold, addressing a few cases where multiple anchors are required, such as Google Map and its BottomSheet. I should also implement AnchoredModalBottomSheet, but currently I do not have this requirement.

Step 1. Add it in your root build.gradle at the end of repositories:

dependencyResolutionManagement {
    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
    repositories {
        mavenCentral()
        maven { url 'https://jitpack.io' }
    }
}

Step 2. Add the dependency

dependencies {
    implementation 'com.github.CurrentIndex:AnchoredBottomSheet:0.0.2'
}

screen.mp4

1. Define some object classes that inherit from AnchoredBottomSheetStateValue.

object SheetValues {
    data object Maximum : AnchoredBottomSheetStateValue(1f)
    data object Medium : AnchoredBottomSheetStateValue(.5f)
    data object Minimum : AnchoredBottomSheetStateValue(.1f)
    data object Hide : AnchoredBottomSheetStateValue(.0f) // If you need to hide
}

2. Defining a state to control the bottomsheet and defining anchors to tell the bottomsheet how to snap.

val scope = rememberCoroutineScope()
val anchors = listOf(SheetValues.Maximum, SheetValues.Medium, SheetValues.Minimum, SheetValues.Hide)
val scaffoldState = rememberAnchoredBottomSheetScaffoldState(
    anchors = anchors,
    initialValue = anchors.first(),
    animationSpec = tween(easing = EaseOutBack)
)

AnchoredBottomSheetScaffold(
    scaffoldState = scaffoldState,
    sheetContent = {
        // content
    },
) { // body }

... Hide

scope.launch {
    scaffoldState.anchoredSheetState.animateTo(SheetValues.Medium)
}

Show you should save the previous state in any way to restore it. like this:

var previousAnchor by rememberSaveable { mutableStateOf<Float?>(null) }
Button(onClick = {
    scope.launch {
        previousAnchor = scaffoldState.anchoredSheetState.currentValue.value
        scaffoldState.anchoredSheetState.animateTo(SheetValues.Hide)
    }
}) {
    Text(text = "Hide")
}
Button(onClick = {
    scope.launch { scaffoldState.anchoredSheetState.animateTo(anchors.first { anchor -> previousAnchor == anchor.value }) }
}) {
    Text(text = "Show")
}