Menu_option_in _Android:

(1) write code for MainActivity.java

package com.example.ommaurya;  //change pacakage name accroding your package which you have created

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

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

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.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.
       
       
        switch (item.getItemId()) { 
        case R.id.item1: 
          Toast.makeText(getApplicationContext(),"Item 1 Selected",Toast.LENGTH_LONG).show(); 
        return true;    
       case R.id.item2: 
            Toast.makeText(getApplicationContext(),"Item 2 Selected",Toast.LENGTH_LONG).show(); 
          return true;    
        case R.id.item3: 
            Toast.makeText(getApplicationContext(),"Item 3 Selected",Toast.LENGTH_LONG).show(); 
          return true;    
          default: 
            return super.onOptionsItemSelected(item);
       
    }
       
    }
   
}




(2)write code for  main.xml  file which is  under path "res/layout/menu/main.xml"   :


<menu 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"
    tools:context="com.example.ommaurya.MainActivity" >

    <item
        android:id="@+id/action_settings"
        android:orderInCategory="100"
        android:title="@string/action_settings"
        app:showAsAction="never"/>
       
       
       
       
       <item  android:id="@+id/item1" 
            android:title="Item 1"/> 
        <item  android:id="@+id/item2" 
            android:title="Item 2"/> 
        <item  android:id="@+id/item3" 
            android:title="Item 3"/>

</menu>




(3) activity_main.xml:


<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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.ommaurya.MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />
       
       
       
       
</RelativeLayout>

output will  look like: