Companion ebook Available Pro Android Includes Android 1.5 SOURCE CODE ONLINE US $44.99

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1 The EXPERT s VOIce in Open Source Pro Android Covers Google s Android Platform and its fundamental APIs, from basic concepts such as Android resources, intents, and content providers to advanced topics such as OpenGL 3D graphics Sayed Y. Hashimi and Satya Komatineni

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3 Pro Android Sayed Y. Hashimi and Satya Komatineni

4 Pro Android Copyright 2009 by Sayed Y. Hashimi and Satya Komatineni All rights reserved. No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher. ISBN-13 (pbk): ISBN-13 (electronic): Printed and bound in the United States of America Trademarked names may appear in this book. Rather than use a trademark symbol with every occurrence of a trademarked name, we use the names only in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of the trademark. Java and all Java -based marks are trademarks or registered trademarks of Sun Microsystems, Inc., in the United States and other countries. Apress, Inc., is not affiliated with Sun Microsystems, Inc., and this book was written without endorsement from Sun Microsystems, Inc. Lead Editor: Steve Anglin Development Editor: Douglas Pundick Technical Reviewer: Vikram Goyal Editorial Board: Clay Andres, Steve Anglin, Mark Beckner, Ewan Buckingham, Tony Campbell, Gary Cornell, Jonathan Gennick, Michelle Lowman, Matthew Moodie, Jeffrey Pepper, Frank Pohlmann, Ben Renow-Clarke, Dominic Shakeshaft, Matt Wade, Tom Welsh Project Manager: Richard Dal Porto Copy Editor: Nina Goldschlager Perry Associate Production Director: Kari Brooks-Copony Production Editor: Candace English Compositor: Patrick Cunningham Proofreader: Lisa Hamilton Indexer: Ron Strauss Artist: April Milne Cover Designer: Kurt Krames Manufacturing Director: Tom Debolski Distributed to the book trade worldwide by Springer-Verlag New York, Inc., 233 Spring Street, 6th Floor, New York, NY Phone SPRINGER, fax , orders-ny@springer-sbm.com, or visit For information on translations, please contact Apress directly at 2855 Telegraph Avenue, Suite 600, Berkeley, CA Phone , fax , info@apress.com, or visit apress.com. Apress and friends of ED books may be purchased in bulk for academic, corporate, or promotional use. ebook versions and licenses are also available for most titles. For more information, reference our Special Bulk Sales ebook Licensing web page at The information in this book is distributed on an as is basis, without warranty. Although every precaution has been taken in the preparation of this work, neither the author(s) nor Apress shall have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by the information contained in this work. The source code for this book is available to readers at

5 To my son: Sayed-Adieb Sayed Y. Hashimi To my family: Narayan Komatineni, Kavitha Komatineni, Nikolas Perez, Ashley Perez, and AnnMarie Komatineni Satya Komatineni

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7 Contents at a Glance About the Authors xv About the Technical Reviewer xvii Acknowledgments...xix Introduction xxi Chapter 1 Introducing the Android Computing Platform...1 Chapter 2 Getting Your Feet Wet Chapter 3 Using Resources, Content Providers, and Intents...43 Chapter 4 Building User Interfaces and Using Controls Chapter 5 Working with Menus and Dialogs Chapter 6 Unveiling 2D Animation Chapter 7 Exploring Security and Location-Based Services Chapter 8 Building and Consuming Services Chapter 9 Using the Media Framework and Telephony APIs Chapter 10 Programming 3D Graphics with OpenGL Chapter 11 Managing and Organizing Preferences Chapter 12 Coming to Grips with Chapter 13 Simplifying OpenGL and Exploring Live Folders INDEX v

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9 Contents About the Authors xv About the Technical Reviewer xvii Acknowledgments...xix Introduction xxi Chapter 1 Introducing the Android Computing Platform...1 History of Android Delving into the Dalvik VM...4 Comparing Android and Java ME Understanding the Android Software Stack Developing an End-User Application with the Android SDK...9 The Android Emulator The Android UI The Android Foundational Components...11 Advanced UI Concepts Android Service Components...13 Android Media and Telephony Components Android Java Packages...15 Taking Advantage of Android Source Code...18 Summary...19 Chapter 2 Getting Your Feet Wet...21 Setting Up Your Environment...21 Downloading JDK 6 and Eclipse Downloading the Android SDK...22 Installing Android Development Tools (ADT)...22 Learning the Fundamental Components View Activity...24 Intent Content Provider...25 Service...25 AndroidManifest.xml vii

10 viii CONTENTS Hello World! Exploring the Structure of an Android Application...28 Analyzing the Notepad Application...30 Loading and Running the Notepad Application...31 Dissecting the Application Examining the Application Lifecycle...38 Debugging Your App...41 Summary...42 Chapter 3 Using Resources, Content Providers, and Intents Understanding Resources String Resources Layout Resources...45 Resource-Reference Syntax...47 Defining Your Own Resource IDs for Later Use Compiled and Noncompiled Android Resources...48 Enumerating Key Android Resources...49 Working with Arbitrary XML Resource Files Working with Raw Resources Working with Assets Reviewing the Resources Directory Structure...60 Understanding Content Providers...60 Exploring Android s Built-in Providers Architecture of Content Providers...67 Implementing Content Providers...79 Understanding Intents...91 Available Intents in Android Intents and Data URIs Generic Actions Using Extra Information...96 Using Components to Directly Invoke an Activity...97 Best Practice for Component Designers Understanding Intent Categories...99 The Rules for Resolving Intents to Their Components Exercising the ACTION_PICK Exercising the GET_CONTENT Action Summary...106