The Glass Class:

Introduction to Glassware

Development with Mirror API & GDK

July 7th – 11th 2014

Mark Billinghurst, Gun Lee

HIT Lab NZ

University of Canterbury

An Introduction to

Glassware Development with

Mirror API & GDK

Gun Lee

* Images in the slides are from variety of sources,

including http://developer.android.com and http://developers.google.com/glass

Glassware

https://glass.google.com/glassware

Timeline Metaphor

A Card in the Timeline

Glassware and Timeline

Glassware and Timeline

Static Cards

Static content with text, HTML, images, and (link to)

video.

e.g. notification messages, news clip

Live Cards

Dynamic content updated frequently.

e.g. compass, timer

Immersions

Takes over the whole control, out from timeline.

e.g. interactive game

Glassware Development

Mirror API

Server programming, online/web application

Static cards / timeline management

GDK

Android programming, Java (+ C/C++)

Live cards & Immersions

https://developers.google.com/glass/

Mirror API

REST API

Java servlet, PHP, Go,

Python, Ruby, .NET

Timeline based apps

Static cards

- Text, HTML, media attachment (image & video)

- Standard and custom menu items

Manage timeline

- Subscribe to timeline notifications

- Sharing with contacts

- Location based services

Mirror API based Web App

3. Insert a static card

User sees the card

Glassware Web app

https://developers.google.com/glass/develop/mirror/stories

https://developers.google.com/glass/develop/mirror/stories

https://developers.google.com/glass/develop/mirror/stories

Develop with Mirror API

Create a project on Google APIs Console

Prepare a web server

https callback for OAuth 2.0

Minimum storage for credentials

Create a web application

Java servlet, PHP, Go, Python, Ruby, .NET

Implement Oauth 2.0 authentication

Use Mirror API to make REST API calls

- Wrapper classes/methods provided

Mirror API in Raw HTTP

Mirror API Java

Python

PHP

Example

Example https://hello-glass-mirror.appspot.com

Example https://hello-glass-mirror.appspot.com

Example https://hello-glass-mirror.appspot.com

Example

On your Glass

GDK

Glass Development Kit

Android 4.4.2 + Glass specific APIs

Use standard Android Development Tools

GDK

GDK add-on features

Timeline and cards

Menu and UI

Touch pad and gesture

Media (sound, camera and voice input)

Live Cards vs. Immersions

Live cards display frequently updated

information to the left of the Glass clock.

Integrate rich content into the timeline

Simple text/images to full-blown 3D graphics

Immersions let you build a user

experience outside of the timeline.

Build interactive experiences

Extra control, less user input constraints

Live Cards

Immersions

Live Cards vs. Immersions

Develop with GDK

Android 4.4.2 (API 19) GDK Preview from the

Android SDK Manager.

Project settings:

Minimum and Target SDK Versions: 19

Compile with: GDK Preview

Theme: None (allows the Glass theme to be applied.)

GDK samples

File > New Project > Android Sample Project

On Glass, turn on USB debugging

Settings > Device Info > Turn on debug

Example

Launch with voice trigger

Android App with a full-screen Activity

No theme (Glass system theme applied.)

Handle touch input

Example

Example

Summary

Use Mirror API if you need ...

Use GDK if you need ...

Or use both

More Information

Website

https://developers.google.com/glass

http://arforglass.org

http://www.hitlabnz.org

Gun Lee

gun.lee@hitlabnz.org

Mark Billinghurst

mark.billinghurst@hitlabnz.org