Issues with RecyclerView Not Updating After Using LiveData in ViewModel with Android 14
I've searched everywhere and can't find a clear answer..... I'm encountering a frustrating issue with my RecyclerView not updating when the underlying data in my ViewModel changes. I'm using LiveData to observe the list from my ViewModel, but the UI isn't reflecting the changes correctly. Here's a snippet of how I'm setting up my LiveData in the ViewModel: ```kotlin class MyViewModel : ViewModel() { private val _itemList = MutableLiveData<List<MyItem>>() val itemList: LiveData<List<MyItem>> get() = _itemList fun updateItemList(newList: List<MyItem>) { _itemList.value = newList } } ``` In my Fragment, I observe the LiveData like this: ```kotlin class MyFragment : Fragment() { private lateinit var viewModel: MyViewModel private lateinit var adapter: MyAdapter override fun onViewCreated(view: View, savedInstanceState: Bundle?) { super.onViewCreated(view, savedInstanceState) viewModel = ViewModelProvider(this).get(MyViewModel::class.java) adapter = MyAdapter() recyclerView.adapter = adapter viewModel.itemList.observe(viewLifecycleOwner, { items -> adapter.submitList(items) }) } } ``` I am using ListAdapter with DiffUtil for my adapter: ```kotlin class MyAdapter : ListAdapter<MyItem, MyViewHolder>(MyItemDiffCallback()) { override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder { // Inflate view and create ViewHolder } override fun onBindViewHolder(holder: MyViewHolder, position: Int) { // Bind data to the ViewHolder } } ``` The issue arises when I call `updateItemList(newList)` in my ViewModel. The data updates (I can see them via logging), but the RecyclerView doesn’t refresh. I’ve confirmed that the new list is not null, and I’m using `submitList()` which should trigger the diffing process. I've tried calling `notifyDataSetChanged()` on the adapter as a debugging step, but that didn’t help. I’m also aware that if the list reference doesn’t change, `submitList()` might not trigger an update. My Gradle configuration is using AndroidX dependencies with version 1.4.0 for RecyclerView and LiveData. Did I miss something obvious, or is there a known issue with LiveData and ListAdapter in Android 14? Any insights would be greatly appreciated. I'm on Linux using the latest version of Kotlin. Am I missing something obvious? I'm developing on Ubuntu 22.04 with Kotlin. Any help would be greatly appreciated!