SettingScreen.kt

@Composable
fun SettingScreen(
    settingViewModel: SettingViewModel = viewModel(),
    scaffoldState: ScaffoldState = rememberScaffoldState(),
    coroutinesScope: CoroutineScope = rememberCoroutineScope(),
) {
    val isDarkMode by settingViewModel.isDarkMode.collectAsState()
    SettingScreen(
        scaffoldState = scaffoldState,
        isDarkModeSetting = isDarkMode,
        onDarkModeSettingChanged = {
            settingViewModel.onDarkModeChange(it)
            coroutinesScope.launch {
                scaffoldState.snackbarHostState.showSnackbar("Dark mode changed!")
            }
        }
    )
}

@Composable
fun SettingScreen(
    isDarkModeSetting: Boolean,
    onDarkModeSettingChanged: (Boolean) -> Unit,
    scaffoldState: ScaffoldState
) {
    Scaffold(scaffoldState = scaffoldState) {
        MySwitch(checked = isDarkModeSetting, onCheckChanged = {
            onDarkModeSettingChanged(it)
        })
    }
}