BaseAdapter.kt

import android.view.ViewGroup
import androidx.recyclerview.widget.RecyclerView
import androidx.viewbinding.ViewBinding

abstract class MyBaseAdapter():
   RecyclerView.Adapter<MyBaseAdapter.MyBaseViewHolder>() {

   inner class MyBaseViewHolder(private val itemViewBinding: ViewBinding) :
       RecyclerView.ViewHolder(itemViewBinding.root) {

       fun bindView(binder: (binding: ViewBinding) -> Unit) {
           binder(itemViewBinding)
       }
   }

   open var viewBinder: ((ViewGroup) -> ViewBinding)? = null

   override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyBaseViewHolder {
       return viewBinder?.let {
           it(parent)
       }?.let {
           MyBaseViewHolder(it)
       }!!
   }

   override fun getItemCount(): Int {
       return getCount()
   }

   abstract fun getCount():Int

}