NewListAdapter.kt

class TaskListAdapter(private val clickListener: (Task) -> Unit) :
    ListAdapter<Task, ViewHolder>(TaskDiffCallback()) {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
        val inflater = LayoutInflater.from(parent.context)
        return ViewHolder(inflater.inflate(R.layout.item_task_row, parent, false))
    }

    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
        holder.bind(getItem(position), clickListener)
    }
        
    class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {

        fun bind(task: Task, clickListener: (Task) -> Unit) {
            itemView.taskTitle.text = task.title
            itemView.setOnClickListener { clickListener(task) }
        }
    }
}