advanced patterns of Room Database with Paging 3 and StateFlow in Coroutine Scope
I recently switched to I've looked through the documentation and I'm still confused about I'm experiencing an scenario with integrating Room Database alongside Paging 3 and StateFlow in my Android application. The question arises when I retrieve data from my Room database and attempt to display it in a RecyclerView with paging. After implementing the PagingSource, I'm observing unexpected behavior where the UI does not seem to update when the underlying data in the database changes. Specifically, I'm using Kotlin Coroutines and I have the following setup: ```kotlin // Room Entity @Entity(tableName = "user") data class User( @PrimaryKey val id: Int, val name: String ) // DAO @Dao interface UserDao { @Query("SELECT * FROM user ORDER BY name ASC") fun getAllUsers(): PagingSource<Int, User> } // ViewModel class UserViewModel(application: Application) : AndroidViewModel(application) { private val userDao: UserDao = UserDatabase.getDatabase(application).userDao() val userPagingFlow: Flow<PagingData<User>> = Pager( config = PagingConfig(pageSize = 20), pagingSourceFactory = { userDao.getAllUsers() } ).flow .cachedIn(viewModelScope) } // In Fragment viewModel.userPagingFlow.collectLatest { pagingData -> adapter.submitData(lifecycle, pagingData) } ``` I have confirmed that the data in the Room database is being updated correctly, but the RecyclerView does not reflect these changes in real-time. Additionally, I receive no errors in the logcat. I’ve tried calling `adapter.notifyDataSetChanged()` after submitting the new data, but that didn’t resolve the scenario either. The PagingSource seems to be functioning correctly as I can see the initial data load just fine. I’m on AndroidX Paging 3.1.0 and Room 2.4.0. Is there a common pitfall or configuration that I'm missing here that might cause the PagingData to not propagate changes in the UI when the Room database updates? This is for a CLI tool running on macOS. Hoping someone can shed some light on this. I'm working in a macOS environment. I'd be grateful for any help. I'd be grateful for any help. I'm developing on Linux with Kotlin. Has anyone dealt with something similar?