Create an Application for Demonstration of Android Option Menu & Context Menu.

MainActivity.java :

package com.example.extraprac18;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.Toast;

public class MainActivity extends Activity {

    private static final int LENGTH_LONG = 0;

            @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.menu, menu);

        return true;

    }

   

    @Override

    public boolean onOptionsItemSelected(MenuItem Item)

    {

           

            switch (Item.getItemId() )

            {

                                    case R.id.open:

                                    Toast.makeText(this,"OPEN IS SELECTED",LENGTH_LONG).show();

                                    return true;

                                    case R.id.save:

                                    Toast.makeText(this,"SAVE IS SELECTED",LENGTH_LONG).show();

                                    return true;

                       

                                    case R.id.close:

                                    Toast.makeText(this,"CLOSE IS SELECTED",LENGTH_LONG).show();

                                    return true;

                                   

                                    default:

                                    return super.onOptionsItemSelected(Item);

                        }

                       

                       

    }

   

}

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"

    tools:context=".MainActivity" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:text="@string/ExtraPrac18" />

</RelativeLayout>

Menu.xml :

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

    <item android:id="@+id/open" android:title="OPEN"></item>

    <item android:id="@+id/save" android:title="SAVE"></item>

    <item android:id="@+id/close" android:title="CLOSE"></item>

   

</menu>