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Beginning Android Application Development PDF

450 Pages·2011·21.32 MB·English
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> m o c k. o o b e w o w w. w w < k o o B e w! o W m o d fr a o nl w o D Beginning Android™ ApplicAtion development introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xv chApter 1 Getting Started with Android Programming . . . . . . . . . . . . . . . . . . . . . . . . .1 chApter 2 Activities and Intents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 chApter 3 Getting to Know the Android User Interface . . . . . . . . . . . . . . . . . . . . . . . 81 chApter 4 Designing Your User Interface Using Views . . . . . . . . . . . . . . . . . . . . . . 125 chApter 5 Displaying Pictures and Menus with Views . . . . . . . . . . . . . . . . . . . . . . . 169 chApter 6 Data Persistence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .203 chApter 7 Content Providers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .237 chApter 8 Messaging and Networking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263 chApter 9 Location-Based Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 301 chApter 10 Developing Android Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 331 chApter 11 Publishing Android Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 359 Appendix A Using Eclipse for Android Development . . . . . . . . . . . . . . . . . . . . . . . . . 381 Appendix B Using the Android Emulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393 Appendix c Answers to Exercises . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .411 index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 415 Beginning Android™ Application development Wei-Meng Lee Beginning Android™ Application Development Published by Wiley Publishing, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2011 by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN: 978-1-118-01711-1 ISBN: 978-1-118-08729-9 (ebk) ISBN: 978-1-118-08749-7 (ebk) ISBN: 978-1-118-08780-0 (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 specifically disclaim all warranties, including without limitation warranties of fitness 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 dam- ages 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 also publishes its books in a variety of electronic formats. Some content that appears in print may not be available in electronic books. Library of Congress Control Number: 2011921777 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 affiliates, in the United States and other coun- tries, 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. Wiley Publishing, Inc., is not associated with any product or vendor mentioned in this book. To my family: Thanks for the understanding and support while I worked on getting this book ready! I love you all! —Wei-Meng Lee creditS executive editor vice preSident And Robert Elliott executive group puBliSher Richard Swadley Senior project editor Ami Frank Sullivan vice preSident And executive puBliSher technicAl editor Barry Pruett Kunal Mittal ASSociAte puBliSher production editor Jim Minatel Kathleen Wisor project coordinAtor, cover copy editor Katie Crocker Luann Rouff compoSitor editoriAl director James D . Kramer, Robyn B . Siesky Happenstance Type-O-Rama editoriAl mAnAger prooFreAder Mary Beth Wakefield Nancy Carrasco FreelAncer editoriAl mAnAger indexer Rosemarie Graham Robert Swanson ASSociAte director oF mArketing cover deSigner David Mayhew Michael E . Trent production mAnAger cover imAge Tim Tate © Viktoriya Sukhanova/istockphoto .com 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 documentation. Wei-Meng is also the author of Beginning iOS 4 Application Development (Wrox), along with sev- eral other Wrox titles. You can contact Wei-Meng at [email protected]. ABout the technicAl editor kunAl mittAl serves as an Executive Director of Technology at Sony Pictures Entertainment where he is responsible for the SOA, Identity Management, and Content Management programs. Kunal is an entrepreneur who helps startups define their technology strategy, product roadmap, and develop- ment plans. He generally works in an Advisor or Consulting CTO capacity, and serves actively in the Project Management and Technical Architect functions. He has authored, and edited several books and articles on J2EE, Cloud Computing, and mobile tech- nologies. He holds a Master’s degree in Software Engineering and is an instrument-rated private pilot. AcknoWledgmentS every time i FiniSh A Book project, I always tell myself that this will be the last book that I ever write. That’s because writing books is such a time-consuming and laborious effort. However, when you receive e-mail messages from readers who want to thank you for helping them learn a new tech- nology, all the frustrations disappear. Sure enough, when I finished my previous book on iOS programming, I immediately signed on to do another book — this time about Android. Although you only see the author’s name on the book cover, a lot of people actually worked behind the scenes to make it possible. And now that the book is finally done, it is time to thank a number of those people. First, a huge thanks to Ami Sullivan, my editor, who is always a pleasure to work with. I cannot believe that we have already worked on three books together in such a short duration (only one year) and this is our fourth book! When I hear that Ami is going to be my editor, I know the project is in good hands. Thanks for the guidance, Ami; and thank you for your patience during those times when it seemed like the book was never going to be finished on schedule! I should not forget the heroes behind the scene: copy editor Luann Rouff and technical editor Kunal Mittal. They have been eagle-eye editing the book, making sure that every sentence makes sense — both grammatically as well as technically. Thanks, Luann and Kunal! I also want to take this chance to thank my editor at MobiForge.com, Ruadhan O'Donoghue, who has always been very supportive of my articles. He is always receptive of my ideas and has always been understanding when my schedule falls behind. Thanks for maintaining such a great site, Ruadhan! Last, but not least, I want to thank my parents, and my wife, Sze Wa, for all the support they have given me. They selflessly adjusted their schedules to accommodate mine when I was working on this book. My wife, as always, stayed up late with me on numerous nights as I furiously worked to meet the deadlines, and for this I am very grateful. Finally, to our lovely dog, Ookii, thanks for staying by our side. (For those readers who do not know who Ookii is, you can find two pictures of her in this book. I will leave finding them as an extra exercise for you!)

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Getting Started with Android Programming . Wei-Meng is also the author of Beginning iOS 4 Application Development (Wrox), inch phone tablet.
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