MenuDemo

Start New Project as named MenuDemo as usual then click next,next and select blank Activity and click finish:
 MainActivity.java

package com.broadway.menudemo;

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


public class MainActivity extends AppCompatActivity {

    @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_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
 
//resource file menu_main.xml ma title k cha tei click garda toast dekhaune kam garcha        if (id == R.id.action_settings) {
            Toast.makeText(getApplicationContext(),"Settings",Toast.LENGTH_LONG).show();
            return true;
        }
        if (id == R.id.action_toast) {
            Toast.makeText(getApplicationContext(),"toast",Toast.LENGTH_LONG).show();
            return true;
        }

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

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

</RelativeLayout>

Add Resources file to  Android->app->res->menu

Resources file named 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=".MainActivity">

    <item android:id="@+id/action_settings" android:title="@string/action_settings"
        android:orderInCategory="100" app:showAsAction="always"        android:icon="@mipmap/ic_launcher"/> <-- android:icon give the location of icon-->

    <item android:id="@+id/action_toast" android:title="Toast"        android:orderInCategory="99" app:showAsAction="never" /><-- orderIncategory gives the order of menus-->
</menu>

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