Reusable ListAdapter for simple list.

BaseListAdapter.kt

abstract class BaseListAdapter<T, VB : ViewBinding>(
    private val bindingInflater: (LayoutInflater, ViewGroup, Boolean) -> VB,
    diffUtil: DiffUtil.ItemCallback<T>,
) : ListAdapter<T, BaseListAdapter<T, VB>.ViewHolder>(diffUtil) {

    inner class ViewHolder(val binding: VB, val context: Context) :
        RecyclerView.ViewHolder(binding.root) {
        fun bind(item: T, position: Int) {
            bindItem(item, binding, position, context)
        }
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val inflater = LayoutInflater.from(parent.context)
        val binding = bindingInflater(inflater, parent, false)
        return ViewHolder(binding, parent.context)
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.bind(getItem(position), position)
    }

    abstract fun bindItem(item: T, binding: VB, position: Int, context: Context)
}

ExampleUsage.kt

class NotificationAdapter : BaseListAdapter<Notification, RvItemNotifBinding>(
    RvItemNotifBinding::inflate,
    DiffCallback(),
) {
    private class DiffCallback : DiffUtil.ItemCallback<Notification>() {
        override fun areItemsTheSame(oldItem: Notification, newItem: Notification): Boolean =
            oldItem.id == newItem.id

        override fun areContentsTheSame(oldItem: Notification, newItem: Notification): Boolean =
            oldItem == newItem
    }

    override fun bindItem(
        item: Notification,
        binding: RvItemNotifBinding,
        position: Int,
        context: Context,
    ) {
        with(binding) {
            // ui
        }
    }
}