<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent"

   android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"

   android:paddingRight="@dimen/activity_horizontal_margin"

   android:paddingTop="@dimen/activity_vertical_margin"

   android:paddingBottom="@dimen/activity_vertical_margin"

   app:layout_behavior="@string/appbar_scrolling_view_behavior"

   tools:showIn="@layout/activity_main" tools:context=".MainActivity">

   <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

       android:orientation="vertical"

       android:layout_width="fill_parent"

       android:layout_height="fill_parent">

       <ListView

           android:id="@+id/listView1"

           android:layout_height="fill_parent"

           android:layout_width="fill_parent" />

   </LinearLayout>

</RelativeLayout>

package com.notarazi.mylistviewitemclicklistener1;

public class Product {

   private int id;

   private String name;

   private double price;

   public Product(){

       super();

   }

   public Product(int id, String name, double price) {

       super();

       this.id = id;

       this.name = name;

       this.price = price;

   }

   @Override

   public String toString() {

       return this.id + ". " + this.name + " [$" + this.price + "]";

   }

}

package com.notarazi.mylistviewitemclicklistener1;

import android.os.Bundle;

import android.support.design.widget.FloatingActionButton;

import android.support.design.widget.Snackbar;

import android.support.v7.app.AppCompatActivity;

import android.support.v7.widget.Toolbar;

import android.view.Menu;

import android.view.MenuItem;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

   @Override

   protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_main);

       Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

       setSupportActionBar(toolbar);

       setListView();

       FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);

       fab.setOnClickListener(new View.OnClickListener() {

           @Override

           public void onClick(View view) {

               Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)

                       .setAction("Action", null).show();

           }

       });

   }

   private void setListView() {

       ListView listView1 = (ListView) findViewById(R.id.listView1);

       Product[] items = {

               new Product(1, "Milk", 21.50),

               new Product(2, "Butter", 15.99),

               new Product(3, "Yogurt", 14.90),

               new Product(4, "Toothpaste", 7.99),

               new Product(5, "Ice Cream", 10.00),

       };

       ArrayAdapter<Product> adapter = new ArrayAdapter<Product>(this,

               android.R.layout.simple_list_item_1, items);

       listView1.setAdapter(adapter);

       listView1.setOnItemClickListener(new AdapterView.OnItemClickListener() {

           @Override

           public void onItemClick(AdapterView<?> parent, View view, int position,

                                   long id) {

               String item = ((TextView)view).getText().toString();

               Toast.makeText(getBaseContext(), item, Toast.LENGTH_LONG).show();

           }

       });

   }

   @Override

   public boolean onCreateOptionsMenu(Menu menu) {

       // Inflate the menu; this adds items to the action bar if it is present.

       getMenuInflater().inflate(R.menu.menu_main, menu);

       return true;

   }

   @Override

   public boolean onOptionsItemSelected(MenuItem item) {

       // Handle action bar item clicks here. The action bar will

       // automatically handle clicks on the Home/Up button, so long

       // as you specify a parent activity in AndroidManifest.xml.

       int id = item.getItemId();

       //noinspection SimplifiableIfStatement

       if (id == R.id.action_settings) {

           return true;

       }

       return super.onOptionsItemSelected(item);

   }

}