RecyclerView ItemClick Listener Example in Android

RecyclerViewItemListenerActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    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"
    android:orientation="vertical"
    tools:context="com.example.bhaumik.officetask.RecyclerViewItemListenerActivity">


    <android.support.v7.widget.RecyclerView
        android:id="@+id/recycler_item"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
</LinearLayout>

listener_item.xml

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

    <TextView
        android:id="@+id/tv_listener_item"
        android:layout_width="match_parent"
        android:layout_height="100dp"
        android:text="Hello World"
        android:textSize="@dimen/_30dp"
        android:gravity="center"
        />
</LinearLayout>

RecyclerViewItemListenerActivity.java

package com.example.bhaumik.officetask;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;

import com.example.bhaumik.officetask.adapter.ListenerAdapter;
import com.example.bhaumik.officetask.interfaces.ItemListener;

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

public class RecyclerViewItemListenerActivity extends AppCompatActivity {

    String[] items= {"Aestro","Blender","Cupcake","Donut","Eclair","Froyo","GingerBread"
            ,"HoneyComb", "IceCream Sendwich","JellyBean","Kitkat","Lolipop","Marshmallow","Noght"};

    List<String> list = new ArrayList<>();

    ListenerAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_recycler_view_item_listener);

        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_item);

        recyclerView.setLayoutManager(new LinearLayoutManager(this));

        int i=0;

        for (String data : items){

            list.add(data);
            i++;
        }

        adapter = new ListenerAdapter(list);
        recyclerView.setAdapter(adapter);

        adapter.setOnItemClickListener(new ItemListener() {
            @Override
            public void onItemClick(int pos) {

                Toast.makeText(RecyclerViewItemListenerActivity.this,"Clicked Item Is : " + list.get(pos),
                        Toast.LENGTH_SHORT).show();
            }
        });
    }
}

ListenerAdapter.java

package com.example.bhaumik.officetask.adapter;

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

import com.example.bhaumik.officetask.R;
import com.example.bhaumik.officetask.interfaces.ItemListener;

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

/**
 * Created by Bhaumik on 8/28/2017.
 */

public class ListenerAdapter extends RecyclerView.Adapter<ListenerAdapter.ListenerHolder>{

    List<String> list = new ArrayList<>();

    ItemListener itemListener;

    public ListenerAdapter(List<String> list) {
        this.list = list;
    }

    @Override
    public ListenerHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.listener_item,parent,false);

        return new ListenerHolder(view);
    }

    @Override
    public void onBindViewHolder(ListenerHolder holder, final int position) {

        holder.textView.setText(list.get(position));

        holder.textView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                itemListener.onItemClick(position);
            }
        });
    }

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

    public void setOnItemClickListener(ItemListener itemListener){
        this.itemListener = itemListener;
    }
    public static class ListenerHolder extends RecyclerView.ViewHolder{

        TextView textView;

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

            textView = itemView.findViewById(R.id.tv_listener_item);
        }
    }
}