Base Adapter and RecyclerView.ViewHolder implementation for delegating clicks to Fragment to which adapter is attached. This gist is inspired from https://gist.github.com/aurae/ebf8ec212e4296aebb24 .

RecyclerViewBaseAdapter.java

import android.support.v7.widget.RecyclerView;
import android.view.ViewGroup;


import java.util.List;


/**
 * Created by Ishank Gulati on 14/10/16.
 * Base adapter to be extended by all the recycler view adapters.
 */

public abstract class RecyclerViewBaseAdapter<T, VH extends RecyclerViewBaseViewHolder> extends
        RecyclerView.Adapter<VH> implements RVObservable{

    protected List<T> items;
    private RecyclerViewItemClickListener listener;
    private RVObserver observer;

    @Override
    public final VH onCreateViewHolder(ViewGroup parent, int viewType) {
        VH vh = onCreateRecyclerViewHolder(parent, viewType);
        notifyListenerAttached();
        return vh;
    }

    @Override
    public final void onBindViewHolder(VH holder, int position) {
        if (items != null) {
            holder.performBind(items.get(position), position);
        }
        onBindRecyclerViewHolder(holder, position);
    }

    /**
     * Functionality of onCreateViewHolder has been moved here. User should override this when using
     * this class
     * @param parent The ViewGroup into which the new View will be added after it is bound to
     *               an adapter position.
     * @param viewType The view type of the new View.
     * @return A new ViewHolder that holds a View of the given view type.
     */
    public abstract VH onCreateRecyclerViewHolder(ViewGroup parent, int viewType);

    /**
     * Functionality of onBindViewHolder has been moved here. User should override this when using
     * this class
     * @param holder The ViewHolder which should be updated to represent the contents of the
     *               item at the given position in the data set.
     * @param position The position of the item within the adapter's data set.
     */
    public abstract void onBindRecyclerViewHolder(VH holder, int position);

    /**
     * Method used to set on item click listener of Recycler view.
     * @param listener An implementation of RecyclerViewItemClickListener
     */
    public void setOnItemClickListener(RecyclerViewItemClickListener listener){
        this.listener = listener;
        notifyListenerAttached();
    }

    /**
     * Used to update adapter's data
     * @param items adapter's data
     */
    public void setDataset(List<T> items) {
        this.items = items;
        notifyDataSetChanged();
    }

    /**
     * Used to register view holder in adapter.
     * @param o view holder implementing observer interface.
     */
    @Override
    public final void registerObserver(RVObserver o) {
        this.observer = o;
    }

    /**
     * Used to remove registered view holder in adapter.
     */
    @Override
    public final void removeObserver() {
        this.observer = null;
    }

    /**
     * Used to notify view holder that on click listener of recycler view has been updated.
     */
    @Override
    public final void notifyListenerAttached(){
        if (observer != null && listener != null) {
            observer.update(listener);
        }
    }
}

RecyclerViewBaseViewHolder.java

import android.support.v7.widget.RecyclerView;
import android.view.View;

/**
 * Created by Ishank Gulati on 14/10/16.
 *  Base view holder to be extended by all the recycler view view holders.
 */

public abstract class RecyclerViewBaseViewHolder<T> extends RecyclerView.ViewHolder implements View.OnClickListener,
        View.OnLongClickListener, RVObserver{
    protected T item;
    protected int position;
    private RecyclerViewItemClickListener listener;
    private RVObservable observable;

    protected RecyclerViewBaseViewHolder(View itemView, RVObservable observable) {
        super(itemView);
        this.observable = observable;
        observable.registerObserver(this);
    }

    /**
     * Used to bind items to view holder.
     * @param item item within the adapter's data set
     * @param position The position of the item within the adapter's data set
     */
    protected final void performBind(T item, int position) {
        this.item = item;
        this.position = position;
    }

    /**
     * onClick has been delegated to fragment having recycler view.
     * @param view view which is clicked
     */
    @Override
    public final void onClick(View view) {
        if(listener != null) {
            listener.onClick(view, item);
        }
    }

    /**
     * onLongClick has been delegated to fragment having recycler view.
     * @param view view which is clicked
     */
    @Override
    public final boolean onLongClick(View view) {
        return listener != null && listener.onLongClick(view, item);
    }

    /**
     * Used to update view holder with a listener listening to all the clicks on recycler view.
     * @param listener An implementation of RecyclerViewItemClickListener
     */
    @Override
    public final void update(RecyclerViewItemClickListener listener){
        this.listener = listener;
    }
}

RecyclerViewItemClickListener.java

import android.view.View;

/**
 * Created by Ishank Gulati on 14/10/16.
 */

public interface RecyclerViewItemClickListener<T> {
    void onClick(View view, T item);
    boolean onLongClick(View view, T item);
}

RVobservable.java

/**
 * Created by Ishank Gulati on 14/10/16.
 * Subject as per Observer design pattern.
 */

public interface RVObservable {
    void registerObserver(RVObserver o);
    void notifyListenerAttached();
    void removeObserver();
}

RVObserver.java

/**
 * Created by Ishank Gulati on 14/10/16.
 * Observer as per Observer design pattern.
 */

public interface RVObserver {
    void update(RecyclerViewItemClickListener listener);
}