An expense item list is retrieved from the Room database, as shown below. And I rearranged them by date using '.flatMapConcat {}' in the Repository.
override fun getMonthlyStream(): Flow<List<AssetEntity>> {
return dbDao.getMonthlyData("04")
.flatMapConcat { entities ->
flow {
...
And the ViewModel provides the list to the UI as a 'StateFlow' type. At this time, when the first View is drawn by the 'initial' parameter of the '.stateIn()' operator, it is initially passed as an empty list.
val calendarUiState: StateFlow<List<AssetEntity>> =
repository.getMonthlyStream()
.stateIn(
scope = viewModelScope,
started = SharingStarted.WhileSubscribed(5_000L),
initialValue = emptyList()
)
Because of this, when ViewModel data is loaded from View, an Empty list is first entered, and the list size is always 0 even after recomposition has occurred.
viewModel: CalendarViewModel = viewModel(factory = AppViewModelProvider.Factory)
) {
val calendarUiState by viewModel.calendarUiState.collectAsState()
var sizel by remember { mutableStateOf(calendarInput.size) } // Always 0
How can I solve the above problem? Also, should I use 'stateFlow' for what I'm trying to do?
