👀 Views: 35 💬 Answers: 1 📅 Created: 2025-08-28

android livedata viewmodel recyclerview configuration kotlin

I'm testing a new approach and I'm facing a frustrating issue where my `LiveData` in the `ViewModel` isn't updating the `RecyclerView` after a configuration change, such as an orientation change, in my Android 14 app..... I am using the `ViewModel` and `LiveData` architecture components to manage my UI data. The `LiveData` holds a list of items being displayed in the `RecyclerView`, but after I rotate the device, the `RecyclerView` still shows the old data instead of the updated list. Here's the code for my `ViewModel`: ```kotlin class MyViewModel : ViewModel() { private val _items = MutableLiveData<List<Item>>() val items: LiveData<List<Item>> get() = _items fun updateItems(newItems: List<Item>) { _items.value = newItems } } ``` In my `Fragment`, I am observing the `LiveData` like this: ```kotlin class MyFragment : Fragment() { private lateinit var viewModel: MyViewModel private lateinit var adapter: MyAdapter 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) adapter = MyAdapter() viewModel.items.observe(viewLifecycleOwner, Observer { newItems -> adapter.submitList(newItems) }) return view } } ``` I also tried out using `viewLifecycleOwner` for the observer to ensure it doesn't leak. However, after the configuration change, when I call `updateItems(newList)` from another part of my app, it seems like the `RecyclerView` doesn't reflect the new items. The logs show that `updateItems()` is indeed being called, but the `RecyclerView` stays unchanged. I've verified that the list is actually being updated by logging it inside the `Observer`, and it shows the correct data. Is there something I might be missing regarding how `LiveData` interacts with configuration changes? Any help would be appreciated! For context: I'm using Kotlin on macOS. What's the best practice here? I'm working in a Debian environment. Any help would be greatly appreciated! For context: I'm using Kotlin on Windows 10. Is there a simpler solution I'm overlooking?