ffirs.indd ii ffirs.indd ii 25/01/12 8:34 AM 25/01/12 8:34 AM BEGINNING ANDROID™ 4 APPLICATION DEVELOPMENT INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xxi CHAPTER 1 Getting Started with Android Programming . . . . . . . . . . . . . . . . . . . . . . . . .1 CHAPTER 2 Activities, Fragments, and Intents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 CHAPTER 3 Getting to Know the Android User Interface . . . . . . . . . . . . . . . . . . . . . . 105 CHAPTER 4 Designing Your User Interface with Views . . . . . . . . . . . . . . . . . . . . . . . 159 CHAPTER 5 Displaying Pictures and Menus with Views . . . . . . . . . . . . . . . . . . . . . . . 219 CHAPTER 6 Data Persistence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 251 CHAPTER 7 Content Providers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293 CHAPTER 8 Messaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 321 CHAPTER 9 Location-Based Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 351 CHAPTER 10 Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393 CHAPTER 11 Developing Android Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 429 CHAPTER 12 Publishing Android Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 463 APPENDIX A Using Eclipse for Android Development . . . . . . . . . . . . . . . . . . . . . . . . . 483 APPENDIX B Using the Android Emulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 499 APPENDIX C Answers to Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 515 INDEX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 521 ffirs.indd i ffirs.indd i 25/01/12 8:34 AM 25/01/12 8:34 AM ffirs.indd ii ffirs.indd ii 25/01/12 8:34 AM 25/01/12 8:34 AM BEGINNING Android™ 4 Application Development ffirs.indd iii ffirs.indd iii 25/01/12 8:34 AM 25/01/12 8:34 AM ffirs.indd iv ffirs.indd iv 25/01/12 8:34 AM 25/01/12 8:34 AM BEGINNING Android™ 4 Application Development Wei-Meng Lee John Wiley & Sons, Inc. ffirs.indd v ffirs.indd v 25/01/12 8:34 AM 25/01/12 8:34 AM Beginning Android™ 4 Application Development Published by John Wiley & Sons, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2012 by John Wiley & Sons, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN: 978-1-118-19954-1 ISBN: 978-1-118-22824-1 (ebk) ISBN: 978-1-118-24067-0 (ebk) ISBN: 978-1-118-26538-3 (ebk) Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http://www.wiley.com/go/permissions. Limit of Liability/Disclaimer of Warranty: The publisher and the author make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifi cally disclaim all warranties, including without limitation warranties of fi tness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and strategies contained herein may not be suitable for every situation. This work is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional services. If professional assistance is required, the services of a competent professional person should be sought. Neither the publisher nor the author shall be liable for damages arising herefrom. The fact that an organization or Web site is referred to in this work as a citation and/or a potential source of further information does not mean that the author or the publisher endorses the information the organization or Web site may provide or recommendations it may make. Further, readers should be aware that Internet Web sites listed in this work may have changed or disappeared between when this work was written and when it is read. For general information on our other products and services please contact our Customer Care Department within the United States at (877) 762-2974, outside the United States at (317) 572-3993 or fax (317) 572-4002. Wiley publishes in a variety of print and electronic formats and by print-on-demand. Some material included with standard print versions of this book may not be included in e-books or in print-on-demand. If this book refers to media such as a CD or DVD that is not included in the version you purchased, you may download this material at http:// booksupport.wiley.com. For more information about Wiley products, visit www.wiley.com. Library of Congress Control Number: 2011945560 Trademarks: Wiley, the Wiley logo, Wrox, the Wrox logo, Wrox Programmer to Programmer, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affi liates, in the United States and other countries, and may not be used without written permission. Android is a trademark of Google, Inc. All other trademarks are the property of their respective owners. John Wiley & Sons, Inc., is not associated with any product or vendor mentioned in this book. ffirs.indd vi ffirs.indd vi 25/01/12 8:34 AM 25/01/12 8:34 AM To my family: Thanks for the understanding and support while I worked on getting this book ready. I love you all! ffirs.indd vii ffirs.indd vii 25/01/12 8:34 AM 25/01/12 8:34 AM ffirs.indd viii ffirs.indd viii 25/01/12 8:34 AM 25/01/12 8:34 AM ABOUT THE AUTHOR WEI-MENG LEE is a technologist and founder of Developer Learning Solutions (www.learn2develop .net), a technology company specializing in hands-on training on the latest mobile technologies. Wei-Meng has many years of training experience and his training courses place special emphasis on the learning-by-doing approach. This hands-on approach to learning programming makes understanding the subject much easier than reading books, tutorials, and other documentation. Wei-Meng is also the author of Beginning iOS 5 Application Development (Wrox, 2010) and Beginning Android Application Development (Wrox, 2011). Contact Wei-Meng at