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- Herausgeber: Packt Publishing
- Kategorie: Fachliteratur
- Sprache: Englisch
If you are an Android developer who wants to learn how to build applications for the Android Wear platform, then this is the book for you. This book only requires a basic knowledge of Android programming. Familiarity with development IDEs such as Android Studio, IntelliJ IDEA, or Eclipse will be helpful.
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Seitenzahl: 179
Veröffentlichungsjahr: 2015
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Table of Contents
Android Wearable Programming
Android Wearable Programming
Copyright © 2015 Packt Publishing
All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.
Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.
Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.
First published: July 2015
Production reference: 1270715
Published by Packt Publishing Ltd.
Livery Place
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Birmingham B3 2PB, UK.
ISBN 978-1-78528-015-3
www.packtpub.com
Cover image by Evelyn Lam (<[email protected]>)
Credits
Author
Steven F. Daniel
Reviewers
Marcus Gabilheri
Andreas Göransson
Dr. Jibo He
Qian He
Jason Salas
Commissioning Editor
Priya Singh
Acquisition Editor
Vivek Anantharaman
Content Development Editor
Amey Varangaonkar
Technical Editors
Utkarsha S. Kadam
Shiny Poojary
Copy Editor
Kausambhi Majumdar
Project Coordinator
Bijal Patel
Proofreader
Safis Editing
Indexer
Tejal Soni
Graphics
Jason Monteiro
Production Coordinator
Aparna Bhagat
Cover Work
Aparna Bhagat
About the Authors
Steven F. Daniel is the owner and founder of GENIESOFT STUDIOS (http://www.geniesoftstudios.com/), a software development company based in Melbourne, Victoria, that focuses primarily on developing games and business applications for the iOS, Android, Mac OS X and Windows platforms. He is an experienced software developer with more than 14 years of experience in developing desktop and web-based applications for a number of companies, including: ANZ, Department of Justice, BP Australia, and AXA Australia.
Steven is always interested in emerging technologies and is a member of the SQL Server Special Interest Group (SQLSIG), Melbourne CocoaHeads, and Java Community.
He was the cofounder and Chief Technology Officer (CTO) of SoftMpire Pty Ltd., a company that focused primarily on developing business applications for the iOS and Android platforms.
Steven is the author of various book titles, such as Xcode 4 iOS Development Beginner's Guide, iOS 5 Essentials, iPad Enterprise Application Development Blueprints, and Xcode 4 Cookbook, all by Packt Publishing. You can check out his blog at http://www.geniesoftstudios.com/blog/ or follow him on Twitter at http://twitter.com/GenieSoftStudio.
Acknowledgments
No book is the product of just the author — he just happens to be the one with his name on the cover. A number of people contributed to the success of this book and it would take more space than I have to thank each one individually.
I would personally like to thank two special people who have been an inspiration and who have provided me with so much support during the writing of this book: Vivek Anantharaman, my acquisition editor, who is the reason that this book exists, for being a wonderful guide throughout this whole process, and Amey Varangaonkar for his understanding and support, as well as his brilliant suggestive approaches during the chapter rewrites. Thank you for everything, guys.
Lastly, to my reviewers: thank you so much for your valuable suggestions and improvements, making this book what it is today. I am extremely grateful to each and every one of you.
Also, thanks to the entire Packt Publishing team for working so diligently to help bring out a high-quality product. Finally, a big thank you to the engineers at Google for creating the Android platform and providing developers with the tools to create fun and sophisticated applications.
Finally, I'd like to thank all of my friends for their support, understanding, and encouragement during the writing process. It is a privilege to know each and every one of you.
About the Reviewers
Marcus Gabilheri is a computer science student at Oklahoma State University. He was born in Brazil but lived in Spain for 11 years. He moved to the United States to be with his wife, Carissa Gabilheri, and decided to go back to school in the U.S. to follow his passion for programming. As a student at OSU, he has won the University's Mobile App Competition 2 years in a row. Marcus actively participates in the developer community as a Google Developer Group organizer and advocates Android development as well other technologies. He works as a mobile and web developer for Oklahoma State University and enjoys developing Android apps in his spare time. His latest achievement was in the Google Fit developer's challenge, where he was one of the 12 grand-prize winners of the challenge with his fitness app, FitHub.
I would like to thank my wife, Carissa Gabilheri, for understanding and putting up with all the late nights and uncountable hours that I spend in front of my computer. I would also like to say special thanks to my mother, Adriana Andreo, and my grandmother, Maria Antonia Andreo, for raising me by themselves and to my parents-in-law, Randy and Donna Wilson, for accepting me into their family when I moved from Brazil to the U.S.
Andreas Göransson has been programming mobile phones since before smartphones became popular. He has previously written two books on Android development and has been involved in several open source projects. Beyond his interest in working on the family farm, he is very interested in emerging technologies, specifically, Internet of Things, wearable devices, and cloud-based services.
Dr. Jibo He is currently an assistant professor at Wichita State University. He graduated from Peking University in 2007 and the University of Illinois in 2012 with a research specialty in engineering psychology. He won the Star of Tomorrow Award from Microsoft and was voted the Most Valuable Graduate by the University of Illinois. He directs the Human Automation Interaction Lab at Wichita State University. His lab does research on user experience, mobile devices, driving safety, aviation psychology, and human computer interaction. The goal of his research is to understand the human cognitive processes and develop technologies to improve performance, increase user experience, and mitigate human error. He has experience in developing for Google Glass, Android, iPhone, and smartwatches.
Qian He is an enthusiastic digital gadget lover and experienced software engineer. He got his bachelor's degree in software engineering from Beijing Institute of Technology. After working at IBM and studying at University of Chinese Academy of Sciences, he decided to pursue a doctorate degree in the United States. Currently, he is studying computer science at Worcester Polytechnic Institute. His main research fields are ubiquitous computing and mobile health. Over the last few years, Qian has been interested in wearable devices and has built several famous fitness apps for Android / Android Wear / Pebble.
Jason Salas is a product manager, developer, sportscaster, author, and filmmaker who enjoys a perpetual summer on the island of Guam.
He runs the R&D group for Guam's largest media company, where he also co-anchors the nightly news.
Jason coauthored Designing and Developing for Google Glass (http://www.amazon.com/dp/1491946458/ref=cm_sw_su_dp), by O'Reilly Media, published an e-book about the trials and tribulations of a season in a semipro football league, and previously contributed to a book on Microsoft Hailstorm. He's also a member of the Football Writers Association of America.
You can find Jason at https://plus.google.com/+JasonSalas/posts.
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To my favorite uncle, Benjamin Jacob Daniel, for always making me smile and inspiring me to work hard and achieve my dreams, I miss you a lot.
Chan Ban Guan, for the continued patience, encouragement, and support, and most of all for believing in me during the writing of this book.
To my family, for their love and support, and always believing in me throughout the writing of this book.
This book would not have been possible without everyone's love and understanding and I would like to thank you all from the bottom of my heart.
Preface
Android Wear is becoming extremely popular, and offers a great opportunity for developers to learn how to build applications for the Android Wear platform, which is a special version of the core Android OS, and has been tailored for wearable computing devices such as smartwatches. These wearable devices come with a brand new user interface, which is the result of Google working with their customers to understand how they use their phones today and how they can be more in touch with their environment.
Android Wearable Programming provides a practical approach to developing and building Android apps using the Android Studio Integrated Development Environment. The new Android Studio IDE has introduced a specialized development environment that has been welcomed by the emerging Android community. This IDE is perfect to develop Android Wear apps because of the tight integration it has with the Wear development APIs, and also the streamlined build cycle with Gradle that helps to minimize a lot of manual configuration that the developer would need to do in other IDEs.
In this book, I have tried my best to keep the code simple and easy to understand by providing a step-by-step approach, with lots of screenshots at each step to make it easier to follow. You will soon be mastering the different aspects of Android Wear programming, as well as the technology and skills needed to create your own applications for the Android Wear platform.
Feel free to contact me at <[email protected]> if you have any queries, or if you just want to drop by and say "Hello".
What this book covers
Chapter 1, Understanding Android Wearables and Building Your First Android Wear App, describes the background of the Android Wear platform architecture and shows you how to set up and configure the Android development environment, before finally looking at how to create a simple Android Wear app.
Chapter 2, Creating Notifications, introduces you to Android notifications, where you will learn how to create basic and custom notification messages. You will learn how to incorporate voice capabilities to read out the content of the notification, before learning how to group multiple notification messages using page-stacking.
Chapter 3, Creating, Debugging, and Packaging Wearable Apps, focuses on designing and creating custom watch faces to present information within the Android wearable watch area. You will learn how to effectively debug your app over Bluetooth, before finally learning how to package your wearable app so that it can be used within the handheld mobile device.
Chapter 4, Sending and Syncing Data, introduces you to the Data Layer API and the Message API frameworks, so that you can synchronize image data from the handheld device with the wearable, as well as use the Message API to communicate between the handheld and the wearable to send and receive messages.
Chapter 5, Working with Google Glass, explores how to build effective user interfaces for the Google Glass platform by creating user interfaces that display content that responds to voice input commands, before finally learning how we can access the Glass camera to take a snapshot and save the image to local storage.
Chapter 6, Designing and Customizing Interfaces for Android TV, provides you with the background and understanding of how to effectively present your app within the main user interface and how you can design your app by following the Android TV UI Patterns to help users get the content they want quickly. Also, you will learn how to create and use fragments that allow information to be presented within the Android TV interface to represent your content.
What you need for this book
For this book, you need a computer running a Windows, Mac OS, or Linux system. You will also need to have the Android Studio IDE and both Java and Java Runtime Environment installed on your system.
Who this book is for
This book is intended for developers who have a working experience of the application development principles for the Android platform and wish to expand their Android capabilities by developing applications for Android wearables using the key features of Android Studio. It's assumed that you are familiar with object-oriented programming and the Java programming language.
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Chapter 1. Understanding Android Wearables and Building Your First Android Wear App
When Google announced Android Wear at their Google I/O conference back in March 2014, developers were excited and started embracing this technology to see what types of applications they could create to communicate between the Android handheld device and Android wearable, while making our day-to-day lives a lot easier.
Android wearables bring a personal touch by allowing consumers to interact with their devices on a different level, and are aimed at reducing people's interaction with their mobile phones. This could include receiving a simple notification message reminding you to pick up something on your way home from work, or that you have an upcoming appointment. There is even an ability to receive messages from your favorite social networking application, for example, Facebook.
This chapter provides you with a theoretical background of Android, and how to develop applications for the Android Wear platform from Google. This platform allows your Android wearable device to communicate with your phone wirelessly over Bluetooth, and many manufactures like Samsung and LG have embraced this technology and created wearable devices, such as the Samsung Gear Live and the LG G Watch R smartwatches.
In later chapters, we will be working with some of these APIs and seeing how we can incorporate these in our applications to communicate between our Android phone and Android Wear devices.
This chapter includes the following topics:
