How can I create a wrapper for the RecyclerView Adapter that will accept any Adapter that implements RecyclerView.Adapter<RecyclerView.ViewHolder>

There are my 2 classes that I use in all of my projects for making generalized use of databinding in RecyclerView items:

Usage

import androidx.recyclerview.widget.DiffUtil
import de.bvb09.android.R
import de.bvb09.android.data.model.news.NewsComponent
import de.bvb09.android.recyclerview.DataBindingAdapter
import de.bvb09.android.recyclerview.DataBindingViewHolder

/**
 * This adapter is responsible for the optional horizontal image gallery
 */
class ZoomImageAdapter : DataBindingAdapter<String>(DiffCallback) {

    override fun getItemViewType(position: Int): Int {
        return R.layout.item_zoom_image
    }

    /**
     * The DiffCallback is used by the [DataBindingAdapter] to check which items are
     * completely new and which just changed its content. When defining the Boolean checks, be
     * as precise as possible to avoid strange behaviour of the RecyclerView items.
     */
    object DiffCallback : DiffUtil.ItemCallback<String>() {
        override fun areItemsTheSame(oldItem: String, newItem: String): Boolean {
            return oldItem == newItem
        }

        override fun areContentsTheSame(oldItem: String, newItem: String): Boolean {
            return oldItem == newItem
        }
    }
}

The ListAdapter

import android.view.LayoutInflater
import android.view.ViewGroup
import androidx.databinding.DataBindingUtil
import androidx.databinding.ViewDataBinding
import androidx.recyclerview.widget.DiffUtil
import androidx.recyclerview.widget.ListAdapter

/**
 * This generic Adapter can be used to use any data class T as data provider for recyclerView list items.
 * To send a list of items to this adapter, use the submitList(newList) method. The DiffCallback is then called to
 * detect which items are completely new or have changed content. Animations are created accordingly and automatically.
 */
abstract class DataBindingAdapter<T>(diffCallback: DiffUtil.ItemCallback<T>) : ListAdapter<T, DataBindingViewHolder<T>>(diffCallback) {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): DataBindingViewHolder<T> {
        val layoutInflater = LayoutInflater.from(parent.context)
        val binding = DataBindingUtil.inflate<ViewDataBinding>(layoutInflater, viewType, parent, false)
        return DataBindingViewHolder(binding)
    }

    override fun onBindViewHolder(holder: DataBindingViewHolder<T>, position: Int) {
        val item = getItem(position)
        holder.bind(item)
    }
}

The ViewHolder

import androidx.databinding.ViewDataBinding
import androidx.recyclerview.widget.RecyclerView
import your.package.name.BR

/**
 * This ViewHolder is an addition to the [DataBindingAdapter]. From this, it receives a ViewDataBinding which
 * allows us to connect the data class T with the data-bindings defined in the item layout.
 */
class DataBindingViewHolder<T>(private val binding: ViewDataBinding) : RecyclerView.ViewHolder(binding.root) {

    var item: T? = null
        private set

    fun rebind() {
        binding.invalidateAll()
        binding.executePendingBindings()
    }

    fun bind(item: T) {
        this.item = item
        binding.setVariable(BR.item, item)
        binding.executePendingBindings()
    }
}

parameter require Nothing because you declared out for generic parameter

try to change RecyclerView.ViewHolder to MyOriginalAdapter.MyViewHolder

class MyRecyclerAdapterWrapper(activity: Activity,val originalAdapter: RecyclerView.Adapter<MyOriginalAdapter.MyViewHolder>) : RecyclerView.Adapter<MyOriginalAdapter.MyViewHolder>() {
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyOriginalAdapter.MyViewHolder {
        TODO("Not yet implemented")
    }

    override fun onBindViewHolder(holder: MyOriginalAdapter.MyViewHolder, position: Int) {
        originalAdapter.onBindViewHolder(holder, position)
    }

    override fun getItemCount(): Int {
        TODO("Not yet implemented")
    }
}

If I understand what you are trying to do, this should solve your issue in a generic matter.

Your RecyclerViewWrapper can use generic types for both the Adapter and for the ViewHolder

class RecyclerViewWrapper<VH : RecyclerView.ViewHolder, A : RecyclerView.Adapter<VH>>(
    activity: Activity,
    val originalAdapter: A
) : RecyclerView.Adapter<VH>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): VH {
        TODO("Not yet implemented")
    }

    override fun onBindViewHolder(holder: VH, position: Int) {
        TODO("Not yet implemented")
    }

    override fun getItemCount(): Int {
        TODO("Not yet implemented")
    }
}

Your OriginalAdapter can be whatever adapter you want

class OriginalAdapter : RecyclerView.Adapter<RecyclerView.ViewHolder>() {

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        TODO("Not yet implemented")
    }

    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        TODO("Not yet implemented")
    }

    override fun getItemCount(): Int {
        TODO("Not yet implemented")
    }
}

And then to use it you can just initiate it as such

fun example(activity: Activity) {
    val wrapper = RecyclerViewWrapper(activity, OriginalAdapter())
}

I think this will be able to help you (as long as I understood correctly), you may need to make minor changes to fit your needs but nothing breaking

You can use below wrapper class of recycler view adapter,

public class WrapperRecyclerAdapter extends RecyclerView.Adapter {

    private final RecyclerView.Adapter mAdapter;

    public WrapperRecyclerAdapter(RecyclerView.Adapter adapter) {
        super.setHasStableIds(adapter.hasStableIds());
        mAdapter = adapter;
        mAdapter.registerAdapterDataObserver(new ForwardingDataSetObserver());
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        return mAdapter.onCreateViewHolder(parent, viewType);
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        mAdapter.onBindViewHolder(holder, position);
    }

    @Override
    public int getItemViewType(int position) {
        return mAdapter.getItemViewType(position);
    }

    @Override
    public void onViewRecycled(RecyclerView.ViewHolder holder) {
        mAdapter.onViewRecycled(holder);
    }

    @Override
    public void onViewAttachedToWindow(RecyclerView.ViewHolder holder) {
        mAdapter.onViewAttachedToWindow(holder);
    }

    @Override
    public void onViewDetachedFromWindow(RecyclerView.ViewHolder holder) {
        mAdapter.onViewDetachedFromWindow(holder);
    }


    @Override
    public void onAttachedToRecyclerView(RecyclerView recyclerView) {
        mAdapter.onAttachedToRecyclerView(recyclerView);
    }

    @Override
    public void onDetachedFromRecyclerView(RecyclerView recyclerView) {
        mAdapter.onDetachedFromRecyclerView(recyclerView);
    }

    @Override
    public long getItemId(int position) {
        return mAdapter.getItemId(position);
    }

    @Override
    public int getItemCount() {
        return mAdapter.getItemCount();
    }

    private class ForwardingDataSetObserver extends RecyclerView.AdapterDataObserver {

        @Override public void onChanged() {
            notifyDataSetChanged();
        }

        @Override public void onItemRangeChanged(int positionStart, int itemCount) {
            notifyItemRangeChanged(positionStart, itemCount);
        }

        @Override public void onItemRangeInserted(int positionStart, int itemCount) {
            notifyItemRangeInserted(positionStart, itemCount);
        }

        @Override public void onItemRangeRemoved(int positionStart, int itemCount) {
            notifyItemRangeRemoved(positionStart, itemCount);
        }

        @Override
        public void onItemRangeMoved(int fromPosition, int toPosition, int itemCount) {
           notifyDataSetChanged(); //TODO
        }
    }

}