RecyclerViewAdapter.kt

interface RecyclerViewAdapter {
    fun getItemCount(): Int
    fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int)
}

class ListAdapter(private val items: List<String>) : RecyclerViewAdapter {

    override fun getItemCount(): Int {
        return items.size
    }

    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        val textView = holder.itemView.findViewById<TextView>(R.id.text_view)
        textView.text = items[position]
    }
}

class RecyclerViewAdapterWrapper(private val adapter: RecyclerViewAdapter) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

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

    override fun getItemCount(): Int {
        return adapter.getItemCount()
    }

    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        adapter.onBindViewHolder(holder, position)
    }
}