Solution: NewsViewModel using stateIn
class NewsViewModel(
newsRepository: NewsRepository,
) : BaseViewModel() {
private val _progressVisible = MutableStateFlow(false)
val progressVisible = _progressVisible.asStateFlow()
private val _errors = Channel<Throwable>(Channel.UNLIMITED)
val errors = _errors.receiveAsFlow()
val newsToShow = newsRepository.fetchNews()
.retry { error -> error is ApiException }
.catch { error -> _errors.send(error) }
.onStart { _progressVisible.value = true }
.onCompletion { _progressVisible.value = false }
.scan(emptyList<News>()) { acc, news -> acc + news }
.stateIn(
scope = viewModelScope,
started = SharingStarted.Eagerly,
initialValue = emptyList<News>()
)
}
