RecyclerView加載多種item佈局

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import com.bumptech.glide.Glide;

import java.util.ArrayList;

/**
 * Created by lenovo on 2017/9/6.
 */
public class MyRecyclerAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private ArrayList<News> list;
    private Context context;

    public MyRecyclerAdapter(ArrayList list, Context context) {
        this.list = list;
        this.context = context;
    }

    @Override
    public int getItemViewType(int position) {
        return list.get(position).getType();
    }

    @Override
    public  RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        RecyclerView.ViewHolder viewHolder = null;
        if(viewType==0){
            View view = LayoutInflater.from(context).inflate(R.layout.item_layout, parent, false);
            viewHolder = new ViewHolder1(view);
        }
        if(viewType==1){
            View view = LayoutInflater.from(context).inflate(R.layout.item_layout2, parent, false);
            viewHolder = new ViewHolder2(view);
        }

        return viewHolder;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        int type = list.get(position).getType();
        if(type==0){
            Glide.with(context).load(list.get(position).getPic().get(0).getThumbnail_pic()).into(((ViewHolder1)holder).img1);
            Glide.with(context).load(list.get(position).getPic().get(1).getThumbnail_pic()).into(((ViewHolder1)holder).img2);
            Glide.with(context).load(list.get(position).getPic().get(2).getThumbnail_pic()).into(((ViewHolder1)holder).img3);
            ((ViewHolder1)holder).text1Tv.setText(list.get(position).getAuthor_name());
        }
        if(type==1){
            Glide.with(context).load(list.get(position).getPic().get(0).getThumbnail_pic()).into(((ViewHolder2)holder).img);
            ((ViewHolder2)holder).text2Tv.setText(list.get(position).getAuthor_name());
        }
    }

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

    public class ViewHolder1 extends RecyclerView.ViewHolder {

        private ImageView img1;
        private ImageView img2;
        private ImageView img3;
        private TextView text1Tv;

        public ViewHolder1(View itemView) {
            super(itemView);

            img1 = (ImageView) itemView.findViewById(R.id.img1);
            img2 = (ImageView) itemView.findViewById(R.id.img2);
            img3 = (ImageView) itemView.findViewById(R.id.img3);
            text1Tv = (TextView) itemView.findViewById(R.id.tv_text1);

        }
    }
    public class ViewHolder2 extends RecyclerView.ViewHolder {

        private ImageView img;
        private TextView text2Tv;

        public ViewHolder2(View itemView) {
            super(itemView);

            img = (ImageView) itemView.findViewById(R.id.img);
            text2Tv = (TextView) itemView.findViewById(R.id.tv_text2);

        }     } }