RecyclerView接口回调

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MainActivity

package com.example.recylerview;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    RecyclerView rv;
    List<String> list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
      rv=(RecyclerView)findViewById(R.id.rc);
        initRV();
    }

    private void initRV() {
       initData();
       LinearLayoutManager manager=new LinearLayoutManager(this);
      // GridLayoutManager manager=new GridLayoutManager(this,3);
     // manager.setOrientation(GridLayoutManager.VERTICAL);
        rv.setLayoutManager(manager);
        MyAdapter adapter = new MyAdapter();
        rv.setAdapter(adapter);

         adapter.setOnItemClickListener(new OnItemClickListener() {
             @Override
             public void onItemClick(View view, int position) {
                 Toast.makeText(MainActivity.this, "点击条目" + position, Toast.LENGTH_SHORT).show();
             }
         });

    }
   //模拟数据
    private void initData() {
        list = new ArrayList<>();
        for (int i = 0; i < 100; i++) {
            list.add("条目" + i);
        }
    }
    //创建适配器
    public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder>{

        OnItemClickListener listener;
        public void setOnItemClickListener(OnItemClickListener listener){
            this.listener = listener;
        }
        @Override
        public MyAdapter.MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
         View view=View.inflate(MainActivity.this,R.layout.item,null);
            MyViewHolder holder=new MyViewHolder(view);
            view.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    listener.onItemClick(v,(int)v.getTag());
                }
            });

            return holder;
        }

        @Override
        public void onBindViewHolder(MyAdapter.MyViewHolder holder, int position) {
          holder.tv.setText(list.get(position));
            holder.itemView.setTag(position);
        }

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

        class MyViewHolder extends RecyclerView.ViewHolder{
            TextView tv;
           public MyViewHolder(View itemView){
               super(itemView);
             tv=(TextView) itemView.findViewById(R.id.tv);

           }

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

Layout布局

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
   <android.support.v7.widget.RecyclerView
       android:id="@+id/rc"
       android:layout_width="match_parent"
       android:layout_height="match_parent"></android.support.v7.widget.RecyclerView>

</RelativeLayout>

item条目布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"

    >

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/tv"

        />

</LinearLayout>

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