👀 Views: 50 💬 Answers: 1 📅 Created: 2025-06-16

android fragment recyclerview navigation Kotlin

This might be a silly question, but I'm currently working on an Android 14 application where I have a `RecyclerView` that displays a list of items. Each item is clickable to navigate to a detail fragment using the Navigation Component. However, when I click on an item, I often encounter an `IllegalStateException` indicating that the FragmentManager is already executing transactions. This happens intermittently and only in certain conditions, specifically when I have rapid clicks on multiple items. Here's what I have so far: In my `RecyclerView.Adapter`, I set the click listener like this: ```kotlin class MyAdapter(private val items: List<MyItem>, private val navController: NavController) : RecyclerView.Adapter<MyAdapter.MyViewHolder>() { override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder { val view = LayoutInflater.from(parent.context).inflate(R.layout.item_view, parent, false) return MyViewHolder(view) } override fun onBindViewHolder(holder: MyViewHolder, position: Int) { val item = items[position] holder.itemView.setOnClickListener { navController.navigate(R.id.action_listFragment_to_detailFragment, Bundle().apply { putString("item_id", item.id) }) } } override fun getItemCount(): Int = items.size class MyViewHolder(view: View) : RecyclerView.ViewHolder(view) } ``` When I click on an item, I see the following stack trace in my logs: ``` IllegalStateException: FragmentManager is already executing transactions at androidx.fragment.app.FragmentManager.checkStateLoss(FragmentManager.java:2038) at androidx.fragment.app.FragmentManager.enqueueAction(FragmentManager.java:2241) at androidx.fragment.app.FragmentManager.beginTransaction(FragmentManager.java:1198) ``` To mitigate this, I tried debouncing the click listener: ```kotlin holder.itemView.setOnClickListener { view -> view.isEnabled = false // Disable further clicks navController.navigate(R.id.action_listFragment_to_detailFragment, Bundle().apply { putString("item_id", item.id) }) view.postDelayed({ view.isEnabled = true }, 300) // Re-enable after 300ms } ``` But this didn't completely resolve the issue and I still see occasional crashes when I tap quickly on different items. I'm using the latest version of the Navigation Component and I've ensured the transaction is not happening on the main thread. Any advice on how to handle this scenario more gracefully? I'm developing on Linux with Kotlin.