java：跟一般的写法一样，增加了按钮响应
MainActivity：

public class MainActivity extends AppCompatActivity implements RecyclerAdapter.OnItemClickListener{

        private RecyclerView mRecyclerView;
        private RecyclerView.LayoutManager mLayoutManager;
        private RecyclerAdapter mRecyclerAdapter;
        private ArrayListlist;

        @Override
        protected void onCreate(Bundlesaved InstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.activity_main);
                RecyclerItem item;
                list = new ArrayList<>();
                item = new RecyclerItem();
                item.setName("No."+0);
                list.add(item);
                mRecyclerView = findViewById(R.id.recyclerView);
                mRecyclerAdapter = new RecyclerAdapter(this,list);
                mRecyclerAdapter.setOnItemClickListener(this);
                // 竖直方向的网格样式，每行一个Item
                mLayoutManager=new GridLayoutManager(this,3,OrientationHelper.VERTICAL,false);
                // 设置布局管理器
                mRecyclerView.setLayoutManager(mLayoutManager);
                // 设置adapter
                mRecyclerView.setAdapter(mRecyclerAdapter);
                // 设置Item添加和移除的动画
                mRecyclerView.setItemAnimator(newDefaultItemAnimator());
        }
        //adapter的按钮点击事件
        @Override
        public void onItemContentClick(Viewview,intposition) {
                //点击最后一个按钮增加一个item
                if(position == list.size()-1) {
                    RecyclerItemitem=newRecyclerItem();
                    item.setName("No."+(position+1));
                    list.add(0,item);
                    //更新RecyclerView
                    mRecyclerAdapter.updateData(list);
                }else{
                    Toast.makeText(this,"No."+position,Toast.LENGTH_SHORT).show();
                }
        }
}

Adapter：

public class RecyclerAdapter extends RecyclerView.Adapter{
    private ArrayList mData;
    private Context mContext;
    private OnItemClickListener onItemClickListener;
    public void setOnItemClickListener(OnItemClickListener listener) {
        this.onItemClickListener = listener;
    }
    public RecyclerAdapter(Context mContext,ArrayList mData){
        this.mData = mData;
        this.mContext = mContext;
    }

    //刷新整个list
    public void updateData(ArrayList data) {
        this.mData = data;
        notifyDataSetChanged();
    }

    //刷新局部list
    public void updateDataItem(ArrayList data, int itemnm) {
        this.mData = data;
        notifyItemChanged(itemnm);
    }

    @Override
    public View Holder onCreateViewHolder(ViewGroup parent, int viewType) {
        View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.recycler_item, parent, false);
        ViewHolder viewHolder = new ViewHolder(v);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(final ViewHolder holder, int position) {
        holder.btn.setText(mData.get(position).getName());
        holder.btn.setOnClickListener(newView.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(onItemClickListener != null) {
                    int pos = holder.getLayoutPosition();
                    onItemClickListener.onItemContentClick(holder.itemView, pos);
                }
            }
        });
    }

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

    public static class ViewHolder extends RecyclerView.ViewHolder{
        Button btn;
        public ViewHolder(View itemView) {
            super(itemView);
            btn = itemView.findViewById(R.id.recycle_name);
        }
    }

    public interface OnItemClickListener{
        void onItemContentClick(View view, int position);
    }
}

RecyclerItem:

public class RecyclerItem{
    String name;
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

activity_main:

<android.support.v7.widget.RecyclerView
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.tudou.recycleviewdemo.MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#00000000"
        android:paddingBottom="5dip">
    </android.support.v7.widget.RecyclerView>
</android.support.constraint.ConstraintLayout>

recycler_item:

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="100dp"
    android:layout_height="100dp">
    <Button
        android:id="@+id/recycle_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="No.1"/>
</RelativeLayout>

Kotlin:语法略有不同，recyclerview调用类似
MainActivity：

class MainActivity : AppCompatActivity(), MainAdapter.ItemClick{
    val items : MutableList  = ArrayList()
    var mainAdapter : MainAdapter ?= null
    override fun onCreate(savedInstanceState:Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)
        //添加一个item
        var item : RecyclerItem
        item = RecyclerItem()
        item.name = "No."+0
        items.add(item)
        val recyclerView = findViewById(R.id.recyclerView) as RecyclerView
        recyclerView.layoutManager = GridLayoutManager(this, 3, OrientationHelper.VERTICAL, false)
        mainAdapter=MainAdapter(items, this)
        mainAdapter!!.setItemClickListener(this)
        recyclerView.adapter = mainAdapter
        recyclerView.itemAnimator = DefaultItemAnimator()
    }

    //adapter的按钮点击事件
    override fun OnItemClick(v : View, position : Int) {
        if(position == items.size - 1) {
            val item = RecyclerItem()
            item.name = "No." + (position + 1)
            items.add(0, item)
            //更新数据
            mainAdapter!!.updateData(items)
        }else{
            Toast.makeText(this,items.get(position).name, Toast.LENGTH_SHORT).show()
        }
    }
}

MainAdapter：

class MainAdapter : RecyclerView.Adapter{
    var items : List? = null
    var context : Context ?= null
    var itemClick : ItemClick ?= null
    constructor(items : List, context : Context){
        this.items = items
        this.context = context
    }
    fun setItemClickListener(itemClick : ItemClick){
        this.itemClick = itemClick
    }
    fun updateData(items :  List){
        this.items = items
        notifyDataSetChanged()
    }
    override fun onBindViewHolder(holder : ViewHolder?, position : Int) {
        var name=items!!.get(position).name
        if(holder != null) {
            holder.textName.setText(name)
            holder.textName.setOnClickListener(View.OnClickListener{
                if(itemClick != null) {
                    itemClick!!.OnItemClick(holder.itemView, position)
                }
            })
        }
    }
    override fun getItemCount():Int{
        return items!!.size
    }
    override fun onCreateViewHolder(parent : ViewGroup?, viewType : Int) : ViewHolder{
        val v = LayoutInflater.from(parent!!.context).inflate(R.layout.recycler_item, parent, false) as RelativeLayout
        val holder = ViewHolder(v)
        return holder
    }

    class ViewHolder(itemView : View?) : RecyclerView.ViewHolder(itemView) {
        var textName : TextView = itemView!!.findViewById(R.id.recycle_name) as TextView
    }

    interface ItemClick{
        fun OnItemClick(v : View, position : Int);
    }
}

RecyclerItem：

class RecyclerItem{
    var name : String = ""
        get
        set
}

activity_main:

<android.support.constraint.ConstraintLayout
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.tudo.kotlintdemo.MainActivity">
    <android.support.v7.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#00000000"
        android:paddingBottom="5dip">
    </android.support.v7.widget.RecyclerView>
</android.support.constraint.ConstraintLayout>

recycler_item:

<RelativeLayout>
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="100dp"
    android:layout_height="100dp">
    <Button
        android:id="@+id/recycle_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="No.1"/>
</RelativeLayout>