Android 滚动屏幕时更改按钮外观

当用户滚动或不滚动屏幕时，我正在try 更改expandLabel(从ContextualHelpFloatingButton, expandLabel: MutableState<Boolean>).如果是滚动，expandLabel应该是false，当用户停止滚动时，应该是true.我已经实现了mutableStateOf()和rememberLazyListState()，但它不会像我预期的那样工作:

 @Composable
 private fun FruitDetailView(fruit: FruitModel?, items: List<FruitDetailItem>) {

        var expanded by remember {
            mutableStateOf(true)
        }
        val listState = rememberLazyListState()

        LaunchedEffect(remember { derivedStateOf { listState.firstVisibleItemScrollOffset } }) {
            expanded = listState.firstVisibleItemScrollOffset == 0
        }

        Box {
            LazyColumn(
                modifier = Modifier
                    .background(UiColors.White)
                    .fillMaxHeight()
            ) {

               ...
            }
            Box(
                contentAlignment = Alignment.BottomEnd,
                modifier = Modifier
                    .fillMaxSize()
                    .padding(vertical = 100.dp, horizontal = 20.dp)
            ){
                ContextualHelpFloatingButton(
                    accessibility = accessibility,
                    data = data,
                    interaction = ContextualHelpFloatingButtonInteraction(
                        expandLabel = remember {
                            mutableStateOf(expanded)
                        }
                    )
                )
            }
        }
    }