activity_main.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:layout_margin="10dp"
    android:orientation="horizontal"
    tools:context="com.tutorialscafe.readallsms.MainActivity">


    <ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"></ListView>


</LinearLayout>

ContextMenuDropDownMenu.java

package com.tutorialscafe.readallsms;


import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    ListView listView1;
    String contacts[]={"Amir Tanveer","Fakhar Husnnain","Muh Adeel","Ali Tamoor","Nayyer Abbas","Asad Nawaz","Ahsan Riaz","Awais Shahid"};

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

        listView1 = (ListView) findViewById(R.id.listView1);
        ArrayAdapter<String> adapter=new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,contacts);
        listView1.setAdapter(adapter);
        // Register the ListView  for Context menu
        registerForContextMenu(listView1);
    }

    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)
    {
        super.onCreateContextMenu(menu, v, menuInfo);
        menu.setHeaderTitle("Select The Action");
        menu.add(0, v.getId(), 0, "Call");//groupId, itemId, order, title
        menu.add(0, v.getId(), 0, "SMS");
    }
    @Override
    public boolean onContextItemSelected(MenuItem item){
        if(item.getTitle()=="Call"){
            Toast.makeText(getApplicationContext(),"calling code",Toast.LENGTH_LONG).show();
        }
        else if(item.getTitle()=="SMS"){
            Toast.makeText(getApplicationContext(),"sending sms code", Toast.LENGTH_LONG).show();
        }else{
            return false;
        }
        return true;
    }

}
package com.tutorialscafe.readallsms;


import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.ContextMenu;
import android.view.MenuItem;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    ListView listView1;
    String contacts[]={"Amir Tanveer","Fakhar Husnnain","Muh Adeel","Ali Tamoor","Nayyer Abbas","Asad Nawaz","Ahsan Riaz","Awais Shahid"};

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

        listView1 = (ListView) findViewById(R.id.listView1);
        ArrayAdapter<String> adapter=new ArrayAdapter<>(this,android.R.layout.simple_list_item_1,contacts);
        listView1.setAdapter(adapter);
        // Register the ListView  for Context menu
        registerForContextMenu(listView1);
    }

    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)
    {
        super.onCreateContextMenu(menu, v, menuInfo);
        menu.setHeaderTitle("Select The Action");
        menu.add(0, v.getId(), 0, "Call");//groupId, itemId, order, title
        menu.add(0, v.getId(), 0, "SMS");
    }
    @Override
    public boolean onContextItemSelected(MenuItem item){
        if(item.getTitle()=="Call"){
            Toast.makeText(getApplicationContext(),"calling code",Toast.LENGTH_LONG).show();
        }
        else if(item.getTitle()=="SMS"){
            Toast.makeText(getApplicationContext(),"sending sms code", Toast.LENGTH_LONG).show();
        }else{
            return false;
        }
        return true;
    }

}