Lifecycle implementing Room Database Queries in Android 14 Using Flow
Can someone help me understand I'm working on a project and hit a roadblock. I'm refactoring my project and I'm relatively new to this, so bear with me. I'm experiencing unexpected behavior when using Room with Flow in my Android application targeting API level 34. My ViewModel is set up to collect a Flow from a Room database, but I'm noticing that the data does not update as expected when the lifecycle of the activity changes, for instance when rotating the device. The collected data seems to be exploring on the previous state, and I'm not seeing the latest updates from the database. Here's the relevant part of my ViewModel: ```kotlin class MyViewModel(application: Application) : AndroidViewModel(application) { private val myDao = MyDatabase.getDatabase(application).myDao() val myData: Flow<List<MyEntity>> = myDao.getAllEntities() } ``` In my Fragment, I'm collecting the Flow like this: ```kotlin class MyFragment : Fragment() { private lateinit var viewModel: MyViewModel override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? { viewModel = ViewModelProvider(this).get(MyViewModel::class.java) return inflater.inflate(R.layout.fragment_my, container, false) } override fun onViewCreated(view: View, savedInstanceState: Bundle?) { lifecycleScope.launch { viewModel.myData.collect { entities -> // Update UI with the latest entities } } } } ``` I verified that the database is actually updating by manually checking the entries outside of the app, and I ensured that I'm observing the Flow within the lifecycle of the Fragment. However, on rotation or when navigating back to the Fragment, the data is stale. I tried using `repeatOnLifecycle` to scope the collection of the Flow but it still doesn't resolve the scenario: ```kotlin override fun onViewCreated(view: View, savedInstanceState: Bundle?) { viewLifecycleOwner.lifecycleScope.launch { repeatOnLifecycle(Lifecycle.State.STARTED) { viewModel.myData.collect { entities -> // Update UI with the latest entities } } } } ``` Am I missing something crucial in managing the lifecycle here? Any suggestions would be greatly appreciated. I'm using Room version 2.5.0 and Kotlin Coroutines version 1.6.0. I also checked that the DAO methods are marked with `@Query` correctly. The logs do not show any behavior messages, but the UI simply does not reflect the changes after the lifecycle events. My development environment is Windows. For reference, this is a production application. Has anyone dealt with something similar? My team is using Kotlin for this application. Cheers for any assistance! I'm working in a Debian environment.