My previous tutorial about google glass explains the basic setup required for google glass app development.

In this tutorial I am going to explain how to display menu items on google glass. Displaying options menu on glass is very simple. The menu we are going to create contains three menu items where selecting each menu items performs separate action.

google glass options menu

Let’s starts this by creating a sample glass project.

Creating new Glass Project

1. Create a new project in Eclipse. File ⇒ New ⇒ Android Application Project and give application name, project name and package.

2. Set Minimum Required SDK and Target SDK to API 19: Android 4.4 (KitKat), Compile With to Glass Development Kit Sneak Peek (Google Inc.) (API19) and select the Theme to None

3. Download this drawable folder and paste it in project’s res folder. This folder contains icons required for the menu items.

4. Open strings.xml and add below strings.

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <string name="app_name">Glass Menu</string>     
    
    <!-- App start voice command -->
    <string name="start_command">Menus</string>
    
    <!-- View messages -->
    <string name="msg_tap_to_menu">Please tap to lauch "menu"</string>
    <string name="msg_about">Activity for about</string>
    <string name="msg_url">www.androidhive.info</string>
    <string name="msg_settings">Activity for settings</string>
    
    <!-- Menu Items -->
    <string name="action_about">About</string>
    <string name="action_settings">Settings</string>
    <string name="action_quit">Quit</string>
    

</resources>

5. Now create an xml file named main.xml under res ⇒ menu folder. In this file we declare actual menu items. We are going to add three menu items about, settings and quit. The first two menu items will launch two separate activities and the third option will quit the app.

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

    
    <item
        android:id="@+id/action_about"
        android:icon="@drawable/ico_about"        
        android:title="@string/action_about"/>
    
    <item
        android:id="@+id/action_settings"
        android:icon="@drawable/ico_settings"        
        android:title="@string/action_settings"/>
    
    <item
        android:id="@+id/action_quit"
        android:icon="@drawable/ico_quit"        
        android:title="@string/action_quit"/>

</menu>

6. Now quickly create two activities for about and settings. These activities will be launched when menu items are selected.

Create activity_about.xml and AboutActivity.java and paste below code.

<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=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="@string/msg_about"
        android:textSize="35dp" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:text="@string/msg_url"
        android:textSize="20dp" />

</RelativeLayout>
package info.androidhive.glassmenu;

import android.app.Activity;
import android.os.Bundle;

public class AboutActivity extends Activity {

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

Also create activity_settings.xml and SettingsActivity.java and paste below code.

<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=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerInParent="true"
        android:text="@string/msg_settings"
        android:textSize="35dp" />

</RelativeLayout>
package info.androidhive.glassmenu;

import android.app.Activity;
import android.os.Bundle;

public class SettingsActivity extends Activity {

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

7. Now open your main activity class (MainActivity.java) and do the below changes. On Glass, menus can be triggered using the same methods which we use when developing mobile app.

Here user tap on D-Pad is detected using KEYCODE_DPAD_CENTER key event inside onKeyDown() method. Then by calling openOptionsMenu() method, menu is rendered on to glass screen. Finally the appropriate action for menu item selection is taken place in onOptionsItemSelected() method.

package info.androidhive.glassmenu;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.MenuItem;

public class MainActivity extends Activity {

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

	/**
	 * Opening menu on tapping on D-pad
	 * */
	@Override
	public boolean onKeyDown(int keyCode, KeyEvent event) {
		if (keyCode == KeyEvent.KEYCODE_DPAD_CENTER) {
			openOptionsMenu();
			return true;
		}
		return false;
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

	/**
	 * Taking appropriate action on selecting menu item
	 * */
	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		
		switch (item.getItemId()) {
		case R.id.action_about:
			// About menu item selected
			Intent ia = new Intent(MainActivity.this, AboutActivity.class);
			startActivity(ia);
			return true;
		case R.id.action_settings:
			// Settings menu item selected
			Intent is = new Intent(MainActivity.this, SettingsActivity.class);
			startActivity(is);
			return true;
		case R.id.action_quit:
			// Quit menu item selected
			// we'll simply close the app
			finish();
			return true;
		default:
			return super.onOptionsItemSelected(item);
		}
	}

}

Until now we are done with actual menus part. But before testing it, I would like to add the app to ok glass menu to launch the app by voice command.

Adding the app to “Ok Glass” menu

8. Create a new folder named xml under res folder.

9. Inside res ⇒ xml folder create an xml file named voice_trigger_start.xml.

<?xml version="1.0" encoding="utf-8"?>
<trigger keyword="@string/start_command" />

10. Now add DEVELOPMENT permission in the AndroidManifest.xml. This allows us to use unlisted glass voice commands.

To launch the app by voice command, we need to add intent-filter and meta-data by adding appropriate voice packages.

<uses-permission android:name="com.google.android.glass.permission.DEVELOPMENT" />
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="info.androidhive.glassmenu"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="19"
        android:targetSdkVersion="19" />
    
    <uses-permission android:name="com.google.android.glass.permission.DEVELOPMENT"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/app_icon"
        android:label="@string/app_name" >
        <activity
            android:name="info.androidhive.glassmenu.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="com.google.android.glass.action.VOICE_TRIGGER" />
            </intent-filter>

            <meta-data
                android:name="com.google.android.glass.VoiceTrigger"
                android:resource="@xml/voice_trigger_start" />
        </activity>
        <activity
            android:name="info.androidhive.glassmenu.AboutActivity"
            android:label="@string/app_name" />
        <activity
            android:name="info.androidhive.glassmenu.SettingsActivity"
            android:label="@string/app_name" />
    </application>

</manifest>

Now deploy the app on to Google Glass and launch the app by saying Ok Glass Menus. Once the app is launched, if you tap on D-Pad you can the menu opened. You can swipe forward / backward to see other menu options.

google glass options menu
Hi there! I am Founder at androidhive and programming enthusiast. My skills includes Android, iOS, PHP, Ruby on Rails and lot more. If you have any idea that you would want me to develop? Let’s talk: ravi@androidhive.info
  • Helpme

    stop these google glass tutorials

    • Adel Jaffan

      why ?

    • سامر

      -1

  • Adel Jaffan

    it is very useful all thanx and respect to u from Syria 🙂

    • you are welcome 🙂

      • سامر

        respect to u from Lebanon 🙂 its great that you are creating a new google glass tutorial but please don`t forget the main reason that people come to the site androidhive ,
        thank you for your understanding

  • Andrew

    Kindly post android app tutorial I always visit your blog for those and they are really helpful seeing google glass tutorial’s are disappointing as the name suggest’s ANDROIDHIVE

  • Sara

    Miss Ravi Tamada can you tell me that from now onwards only google glass tutorials will be uploaded so that i should not get my hopes high

    • Nicky

      Sara i am completely agree with you, tutorials are really good but i think google glass is really not a future, ravi please focus android app developement

    • Sara, You need to understand one thing. I have to cover all the android things. Glass is one of the android device. Not having a Glass with you doesn’t mean that Glass tutorials are not important. You won’t comment this having glass device with you.

      One last thing there are not many developers on glass. I just wanted to help the glass developers with the knowledge I have.

      Thanks

      • سامر

        its okay that focus on glass, but it like your ignoring android app tutorial , im not seeing any new one for a while , im really said that will maybe will loose some great user for this site

  • Sam

    Nice one, Go ahead 🙂

  • Adachi

    Thank you for your effort, it will be amazing if you post some tutorials for Google Wear as well

  • Pindat

    What about android mobile app development ?

  • Sana

    This blog is all about android and man you are going in the other direction millions of people came here to see the amazing world of android seeing the glass thingy is a bit of disappointment and your previous three tutorials were sadly not about android at all kindly consider this view point

  • Ofir

    Ravi, can you make a tutorial of building a chat app?

  • Arjun

    I request you to make a single tutorial which includes all the concepts covered in androidhive till now such as “navigation drawer, list (or) gridview, menus, dialogs, action bar with icons on it to perform some task, etc etc concepts. If you build a tutorial by integrating all these concepts in a single app then i would be very greatful to you because it will be very helpful for the beginner to know how to integrate all these concepts when one builds an app. I’ve come across many people who are following androidhive and also are very good in each and every concept but the irony is they dont know how to integrate all these concepts in single app. So , i request you build such a tutorial which will integrate all these concepts and one can easily learn by looking at that. Thank you

    PS: Hello Ravi, Please make this kind of tutorial as requested above and give us a single app which includes all these concepts. Good luck. Better late then never. Thank you

  • Mela

    Looks like some one bought google glass :-p Hey dude stop this man make some android tut’s make some design tutorial’s some animation tut’s like mean really cool one like goole plus animation and diff apps

    Thanks Yo
    #WeLoveAndroid

  • Peru Tamilea

    I love you but please stop google glass !!!!! I have two with me but we want android app tutorials