RecyclerView是一个增强版的ListView，不仅可以实现和ListView同样的效果，还优化了ListView中存在的各种不足之处

RecyclerView能够实现横向滚动，这是ListView所不能实现的

添加依赖

 compile 'com.android.support:design:25.3.1'

1. RecyclerView初始化及基本设置

//给RecyclerView设置布局管理器
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
//初始化适配器
adapter = new MyRecyclerViewAdapter(getContext(), list);
//给recyclerView添加适配器
recyclerView.setAdapter(adapter);


//设置分隔线  
recyclerView.addItemDecoration( new DividerGridItemDecoration(this ));  
//设置增加或删除条目的动画  
recyclerView.setItemAnimator( new DefaultItemAnimator());  

//RecyclerView除了LinearLayoutManager 之外，
//还提供了GridlayoutManager和StaggeredGridlayoutManager这两种内置的布局排列方式
//GridlayoutManager可以用于实现网格布局
//StaggeredGridlayoutManager可以用于实现瀑布流布局，
//第一个参数表示布局的列数  
//第二个参数表示布局的方向，这里我们传入StaggeredGridLayoutManager.VERTICAL，表示布局纵向排列        
//StaggeredGridLayoutManager layoutmanager =
//new StaggeredGridLayoutManager(3,StaggeredGridLayoutManager.VERTICAL);  

2.Adapter的完整代码

public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.MyViewHolder> implements View.OnClickListener {
    //Adapter继承RecyclerView.Adapter 泛型是自定义的ViewHolder
    //自定义ViewHolder 继承 RecyclerView.ViewHolder
    private Context context;
    private List<String> list;
    //接口实例
    private RecyclerViewOnItemClickListener onItemClickListener;
  
    public MyRecyclerViewAdapter(Context context) {
        this.context=context;
        list=new ArrayList<>();
    }

    public MyRecyclerViewAdapter(Context context,List<String> list) {
        this.context=context;
        this.list=list;

    }

    //添加数据
    public void addData(List<String> list) {
        this.list.addAll(list);
        notifyDataSetChanged();
    }


    //删除所有数据
    public void deleteAllData(){
        this.list.clear();
        notifyDataSetChanged();
    }

    @Override
    public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        MyViewHolder holder = new MyViewHolder(LayoutInflater.from(
                context).inflate(R.layout.list_item1, parent,
                false));
        return holder;
    }



    @Override
    public void onBindViewHolder(final MyViewHolder holder, final int position) {
        holder.tv.setText(list.get(position));
        //设置点击事件
        holder.root.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if(onItemClickListener!=null){
                    int pos = holder.getLayoutPosition();
                    onItemClickListener.onItemClickListener(holder.itemView, pos);
                }
            }
        });
    }

  
    @Override
    public int getItemCount() {
        return list == null ? 0 : list.size();
    }

    
    public void setRecyclerViewOnItemClickListener(RecyclerViewOnItemClickListener onItemClickListener) {
        this.onItemClickListener = onItemClickListener;
    }
    //创建点击事件的接口
    public interface OnRecyclerViewItemClickListener {
         void onItemClickListener(View view, int position);

    }
 
    /**
     * ViewHolder的类，用于缓存控件
     */
    public static class MyViewHolder extends RecyclerView.ViewHolder {

        TextView tv;
        private View root;

        public MyViewHolder(View view) {
            super(view);
            this.root = view;
            tv = (TextView) view.findViewById(R.id.list_item1_tv);

        }

    }
}

3.自定义item的点击事件的外部调用

adapter.setRecyclerViewOnItemClickListener(new MyRecyclerViewAdapter.RecyclerViewOnItemClickListener() {
    @Override
    public void onItemClickListener(View view, int position) {
         Log.e("====","点击的是 " + position + " item");
    }
});

说明

RecyclerView并没有像ListView一样暴露出Item点击事件或者长按事件处理的api，所以需要我们自己来实现
item的点击事件处理。上面的点击事件是通过在绑定ViewHolder的时候设置监听，然后通过Apater回调出去
实现的。