👀 Views: 92 💬 Answers: 1 📅 Created: 2025-06-02

android recyclerview livedata performance kotlin

I'm having a hard time understanding I'm wondering if anyone has experience with I'm experiencing important UI freezes when scrolling through a RecyclerView that is populated with data from LiveData in Android 12... The application seems to stutter, and I'm unsure if this is due to inefficient data handling or something else. I've ensured that I'm using DiffUtil for my adapter, but the question continues. Here's a snippet of my implementation: ```kotlin class MyAdapter(private var items: List<MyItem>) : RecyclerView.Adapter<MyAdapter.MyViewHolder>() { // ViewHolder and other methods omitted for brevity fun updateData(newItems: List<MyItem>) { val diffResult = DiffUtil.calculateDiff(MyDiffCallback(items, newItems)) items = newItems diffResult.dispatchUpdatesTo(this) } } ``` I've set up a LiveData observer in my Fragment like this: ```kotlin viewModel.itemsLiveData.observe(viewLifecycleOwner) { newItems -> adapter.updateData(newItems) } ``` During scrolling, I noticed a warning in the logs: `Detected that the observer is taking too long to process messages.` I tried moving the data processing off the main thread by using a background thread but that only made the data load slower and the UI freeze remains. I've also checked if the data source is too large; currently, I'm testing with around 500 items. Is there a way to optimize this further, or is there a specific pattern I should follow to improve the responsiveness of the RecyclerView? I'm working on a application that needs to handle this. What am I doing wrong? I'm working in a Ubuntu 20.04 environment. What am I doing wrong?