👀 Views: 0 💬 Answers: 1 📅 Created: 2025-06-19

android livedata paging room Kotlin

I'm trying to figure out I'm stuck on something that should probably be simple. I'm working with an scenario where LiveData observers are not being triggered as expected when using Paging 3 with a Room database in my Android app. I've set up the paging source and the ViewModel correctly, but sometimes the data is not being observed in the UI. I am using Kotlin and the latest Android libraries (AndroidX Paging 3.1.0, Room 2.4.0). Here's a snippet of my ViewModel: ```kotlin class MyViewModel(private val repository: MyRepository) : ViewModel() { val pagedList: LiveData<PagingData<MyEntity>> = repository.getPagedData().cachedIn(viewModelScope) } ``` In my Fragment, I observe the LiveData like this: ```kotlin viewModel.pagedList.observe(viewLifecycleOwner) { pagingData -> adapter.submitData(lifecycle, pagingData) } ``` However, when the data in the database changes (like when I add new entries), the observer doesn't get triggered, and I don't see the updated data in my RecyclerView. I verified that the database is updated correctly. I've also tried using `notifyDataSetChanged()` on the adapter as a workaround, but that feels hacky. The LiveData is supposed to trigger re-observations automatically when the data changes, so I’m not sure why it's failing to do so. I've followed the documentation on both Paging 3 and LiveData, but I might be missing something crucial. Any ideas on what could be causing this scenario or how to ensure that my observers are notified of data changes? Thank you! Is there a better approach? I'm on Windows 11 using the latest version of Kotlin. I'm open to any suggestions.