Apress Beginning Android Tablet Programming, Starting with Android Honeycomb for Tablets (2011).pdf

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Beginning Android Tablet
Programming
Starting with Android Honeycomb for Tablets
Robbie Matthews
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Beginning Android Tablet Programming: Starting with Android Honeycomb for Tablets
Copyright © 2011 by Robbie Matthews
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): 978-1-4302-3783-9
ISBN-13 (electronic): 978-1-4302-3784-6
Trademarked names, logos, and images may appear in this book. Rather than use a trademark symbol
with every occurrence of a trademarked name, logo, or image we use the names, logos, and images only
in an editorial fashion and to the benefit of the trademark owner, with no intention of infringement of
the trademark.
The use in this publication of trade names, trademarks, service marks, and similar terms, even if they are
not identified as such, is not to be taken as an expression of opinion as to whether or not they are subject
to proprietary rights.
President and Publisher: Paul Manning
Lead Editor: Steve Anglin and Tom Welsh
Technical Reviewer: Stephen Bull and Peter Brownlow
Editorial Board: Steve Anglin, Mark Beckner, Ewan Buckingham, Gary Cornell, Morgan Engel,
Jonathan Gennick, Jonathan Hassell, Robert Hutchinson, Michelle Lowman, James Markham,
Matthew Moodie, Jeff Olson, Jeffrey Pepper, Douglas Pundick, Ben Renow-Clarke, Dominic
Shakeshaft, Gwenan Spearing, Matt Wade, Tom Welsh
Coordinating Editor: Anita Castro
Copy Editor: Mary Ann Fugate
Compositor: Bytheway Publishing Services
Indexer: SPI Global
Artist: SPI Global
Cover Designer: Anna Ishchenko
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6th Floor, New York, NY 10013. Phone 1-800-SPRINGER, fax (201) 348-4505, e-mail orders-ny@springer-
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The information in this book is distributed on an “as is” basis, without warranty. Although every
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The source code for this book is available to readers at www.apress.com. You will need to answer
questions pertaining to this book in order to successfully download the code.
Contents at a Glance
About the Author.................................................................................................. xiv
About the Technical Reviewer .............................................................................. xv
Acknowledgments ............................................................................................... xvi
Some Notes on Using the Downloaded Code ...................................................... xvii
Chapter 1: Getting Started ......................................................................................1
Chapter 2: How Android Works.............................................................................27
Chapter 3: What Can You Do with an Android Tablet?.........................................53
Chapter 4: Beyond Java: Programming in Python and Friends ............................79
Chapter 5: Project 1: Media Player .....................................................................105
Chapter 6: Explorer .............................................................................................123
Chapter 7: Contact Manager ...............................................................................151
Chapter 8: Dude, Where’s My Car? .....................................................................175
Chapter 10: Remind Me ......................................................................................221
Chapter 11: Everything Else................................................................................243
Index ...................................................................................................................269
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Contents
About the Author.................................................................................................. xiv
About the Technical Reviewer .............................................................................. xv
Acknowledgments ............................................................................................... xvi
Some Notes on Using the Downloaded Code ...................................................... xvii
Chapter 1: Getting Started ......................................................................................1
A Short, Personal History of Portable Programming..........................................................1
The Advent of Android .......................................................................................................3
Preparing Your Computer ..................................................................................................4
Installing Your Development Environment................................................................................................ 4
Creating an Emulator Instance ................................................................................................................. 5
Setting Your Path...................................................................................................................................... 6
Your First Android Program ...............................................................................................6
Oh, No! Java! .....................................................................................................................9
A Quick Guide to Java......................................................................................................10
Structure................................................................................................................................................. 11
Primitives................................................................................................................................................ 12
Flow Control ........................................................................................................................................... 12
Objects.................................................................................................................................................... 13
Constructors, Initializers, and Overloading............................................................................................. 17
Where’s “Free”? ..................................................................................................................................... 19
String Handling....................................................................................................................................... 20
v
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CONTENTS
Packages ................................................................................................................................................ 21
Lists and Maps ....................................................................................................................................... 22
Generics.................................................................................................................................................. 23
Inheritance and Interfaces...................................................................................................................... 24
Annotations............................................................................................................................................. 25
And Many More ...................................................................................................................................... 26
Summary ......................................................................................................................... 26
Chapter 2: How Android Works.............................................................................27
Basic Structure of Android Programs ..............................................................................27
Lifecycle ................................................................................................................................................. 38
Intents: What, Where, Why, and Are They Honorable? .................................................... 42
Intent Filters ........................................................................................................................................... 47
Common Intents ..................................................................................................................................... 48
Finally ..................................................................................................................................................... 48
Secretly Linux .................................................................................................................. 49
Summary ......................................................................................................................... 51
Chapter 3: What Can You Do with an Android Tablet?.........................................53
More Sensors Than the CIA .............................................................................................54
Lights, Camera, Action..................................................................................................... 63
Browsing for Fun and Profit.............................................................................................64
Managing Your Assets ............................................................................................................................ 66
Getting Fancy.......................................................................................................................................... 67
My Little Black Book—Managing Contacts .....................................................................69
Accessing Contacts ................................................................................................................................ 69
A Quick Side Trip into Lists..................................................................................................................... 72
Different Things to Access...................................................................................................................... 74
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