Fragment lifecycle issues causing Database operations to scenarios in Android 14 with Room
I'm updating my dependencies and I'm converting an old project and I've been struggling with this for a few days now and could really use some help... I'm stuck on something that should probably be simple. I'm working with a perplexing scenario where my Room database operations are failing intermittently when called from a Fragment in Android 14. The failure manifests as a `SQLiteConstraintException`, indicating that a unique constraint is violated, but I need to seem to figure out why. I have a ViewModel that manages my database interactions, and I call a function to insert data from my Fragment like this: ```kotlin class MyFragment : Fragment() { private lateinit var viewModel: MyViewModel override fun onCreateView( inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle? ): View? { val view = inflater.inflate(R.layout.fragment_my, container, false) viewModel = ViewModelProvider(this).get(MyViewModel::class.java) return view } private fun insertData() { val newData = MyEntity(id = 1, name = "Sample") // ID is intended to be unique viewModel.insertData(newData) } } ``` And in my ViewModel, I have the following method: ```kotlin class MyViewModel(application: Application) : AndroidViewModel(application) { private val repository: MyRepository = MyRepository(MyDatabase.getDatabase(application).myDao()) fun insertData(entity: MyEntity) { viewModelScope.launch { repository.insert(entity) } } } ``` I have a `LiveData` that observes the database state, and I am updating the UI based on its changes. However, I suspect that the question arises when the Fragment goes through configuration changes or when navigating away from it, leading to multiple calls to insert the same entity. I've tried adding proper checks to handle existing entries, but the scenario continues. To debug, I've added logs in both the Fragment and ViewModel and confirmed that the `insertData` method is indeed being called multiple times. I even attempted to implement a `SingleLiveEvent` to make sure that the insert operation is only triggered once. Hereβs what my insert method in the repository looks like: ```kotlin suspend fun insert(entity: MyEntity) { myDao.insert(entity) } ``` Despite all these efforts, I'm still getting `SQLiteConstraintException: UNIQUE constraint failed: myentity.id (code 2067)`. Any insights or suggestions on how to manage this better? Is there a best practice for handling database operations within Fragments that might prevent this behavior in Android 14? My development environment is Ubuntu. Any ideas what could be causing this? This issue appeared after updating to Kotlin stable. Any help would be greatly appreciated! I'm on Ubuntu 20.04 using the latest version of Kotlin. Has anyone else encountered this? I'm using Kotlin stable in this project. Any examples would be super helpful.