Adapter for implement heterogenous layouts in recyclerview.

Heterogenous Recyclerview

package com.example;
import android.app.Activity;
import android.graphics.Typeface;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.ArrayList;

/**
 * Created by Ankur on 12/6/2017.
 */

public class HeterogenousAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {
    ArrayList<DemoBean> demoList;
    Activity activity;
    private final int HEADER_ITEM = 0;
    private final int CHILD_ITEM = 1;
    public CurrentBuzzAdapter(Activity activity, ArrayList<DemoBean> demoList) {
        this.activity=activity;
        this.demoList=demoList;
    }

    public int getViewTypeCount() {
        return demoList.size();
    }

    @Override
    public int getItemViewType(int position) {
        return demoList.get(position).getItemType();
    }

    View view;
    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType == HEADER_ITEM) {
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.buzz_item, parent, false);
            HeaderHolder headerHolder = new HeaderHolder(activity,view);
            return headerHolder;
        }
        else
        {
            view = LayoutInflater.from(parent.getContext()).inflate(R.layout.cyber_item, parent, false);
            ChildHolder childHolder = new ChildHolder(activity,view);
            return childHolder;
        }

    }

    @Override
    public void onBindViewHolder(final RecyclerView.ViewHolder holder, final int position) {
        Log.w("position bind",position+"");
        if (holder instanceof HeaderHolder) {
          
           // ((HeaderHolder) holder).demo_text.setText("Demo");
            
        }else {
           
             // ((HeaderHolder) holder).demo_text.setText("Demo");
        }
    }

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


    public class HeaderHolder extends RecyclerView.ViewHolder {

        TextView demo_text;
        public HeaderHolder(Activity activity ,View itemView) {
            super(itemView);
            demo_text=(TextView)itemView.findViewById(R.id.demo_text);

        }
    }

    public class ChildHolder extends RecyclerView.ViewHolder {
       
        TextView demo_text;
        public ChildHolder(Activity activity ,View itemView) {
            super(itemView);
            demo_text=(TextView)itemView.findViewById(R.id.demo_text);
        }
    }
}

//set adapter from main class
ArrayList<DemoBean> demoList=new ArrayList<DemoBean>();
for (int i=0;i<10;i++){
   DemoBean demoBean=new DemoBean();
   if(i==0){
   demoBean.setItemType(0)
   demoList.add(demoBean);  
   }
   else if(i==1){
   demoBean.setItemType(1)
   demoList.add(demoBean);  
   }else{
   demoBean.setItemType(1)
   demoList.add(demoBean); 
   }
}

HeterogenousAdapter demoAdapter=new HeterogenousAdapter(activity,demoList);
demoRecyclerView.setAdapter(demoAdapter);