RecyclerViewadapter

package com.bwie.recyclerviewdemo2;
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.TextView;
import java.util.List;
/**
 * Created by stephen on 2017/12/8.
 */
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private Context context;
    private List<String> list;
    public MyAdapter(Context conext, List<String> list){
        this.context = conext;
        this.list = list;
    }
    public void update(List<String> updateList){
        for (String str : updateList) {
            list.add(0,str);
        }
        notifyDataSetChanged();
    }
    /**
     * 加载更多
     * @param moreList
     */
    public void addMore(List<String> moreList){
        for (String str : moreList) {
            list.add(str);
        }
        //刷新适配器
        notifyDataSetChanged();
    }
    @Override
    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.item,parent,false);
        ViewHolder holder = new ViewHolder(view);
        return holder;
    }
    @Override
    public void onBindViewHolder(MyAdapter.ViewHolder holder, int position) {
        holder.tv.setText(list.get(position));
    }
    @Override
    public int getItemCount() {
        return list != null ? list.size() : 0;
    }
    class ViewHolder extends RecyclerView.ViewHolder{
        TextView tv;
        public ViewHolder(View itemView) {
            super(itemView);
            tv = itemView.findViewById(R.id.tv);
        }
    }
}