list view android

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:background="#2196F3"
    tools:context="com.example.viraj.listview.MainActivity">

    <ListView
        android:id="@+id/id_list"
        android:layout_width="368dp"
        android:layout_height="495dp"
        android:divider="#f41331"
        tools:layout_editor_absoluteX="8dp"
        tools:layout_editor_absoluteY="8dp" />
</android.support.constraint.ConstraintLayout>

java code 

package com.example.viraj.listview;

import android.app.Activity;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ArrayAdapter;

import android.widget.ListView;

import android.widget.Toast;

public class MainActivity extends Activity {

    private ListView listView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

      

  /// Get ListView object from xml

        listView = (ListView) findViewById(R.id.id_list);

        // Defined Array values to show in ListView

        String[] values1 = new String[]{"Android List View",

                "Adapter implementation",

                "Simple List View In Android",

                "Create List View Android",

                "Android Example",

                "List View Source Code",

                "List View Array Adapter",

                "Android Example List View"

        };

        // Define a new Adapter

        // First parameter - Context

        // Second parameter - Layout for the row

        // Third parameter - ID of the TextView to which the data is written

        // Forth - the Array of data

        ArrayAdapter<String> adapter = new ArrayAdapter<String>(getApplicationContext(), android.R.layout.simple_list_item_1, android.R.id.text1, values1);

        // Assign adapter to ListView

        listView.setAdapter(adapter);

        // ListView Item Click Listener

        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

            @Override

            public void onItemClick(AdapterView<?> adapterView, View view, int position, long l) {

                // ListView Clicked item index

                int itemPosition = position;

                // ListView Clicked item value

                String itemValue = (String) listView.getItemAtPosition(position);

                // Show Alert

                Toast.makeText(getApplicationContext(),

                        "Position :" + itemPosition + "  ListItem : " + itemValue, Toast.LENGTH_LONG)

                        .show();

            }

        });

    }

}