Issues with RecyclerView Smooth Scrolling When Using DiffUtil in Android 14
I recently switched to Hey everyone, I'm running into an issue that's driving me crazy. I'm facing a challenge with smooth scrolling in a `RecyclerView` when using `DiffUtil` for item updates in Android 14. The scrolling behavior becomes choppy and inconsistent instead of being smooth. I've implemented a `RecyclerView.Adapter` that utilizes `DiffUtil` to calculate the differences for my list, but it seems that when the list is updated frequently (like every second), the UI becomes noticeably laggy. Here's a simplified version of my adapter code: ```kotlin class MyAdapter : RecyclerView.Adapter<MyViewHolder>() { private var items: List<MyItem> = listOf() fun updateItems(newItems: List<MyItem>) { val diffResult = DiffUtil.calculateDiff(MyDiffCallback(items, newItems)) items = newItems diffResult.dispatchUpdatesTo(this) } override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder { // Inflate view and create ViewHolder } override fun onBindViewHolder(holder: MyViewHolder, position: Int) { // Bind view with item } override fun getItemCount(): Int = items.size } ``` And my `DiffUtil.Callback` implementation looks like this: ```kotlin class MyDiffCallback(private val oldList: List<MyItem>, private val newList: List<MyItem>) : DiffUtil.Callback() { override fun getOldListSize(): Int = oldList.size override fun getNewListSize(): Int = newList.size override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean { return oldList[oldItemPosition].id == newList[newItemPosition].id } override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean { return oldList[oldItemPosition] == newList[newItemPosition] } } ``` I've tried optimizing my data updates to ensure I'm only calling `updateItems` when necessary, but the problem persists. I've also ensured that the item layouts are simple to reduce rendering time. In the logs, I noticed the following warning: `RecyclerView: No adapter attached; skipping layout` when the update occurs too rapidly, which could be related? Could this choppiness be caused by the frequent updates, or is there something specific in my implementation that I might be overlooking? Any suggestions for improving the smoothness of scrolling would be greatly appreciated! I'm working on a API that needs to handle this. This is part of a larger web app I'm building. Any help would be greatly appreciated!