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Android Cookbook

Android Community Experts

Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo

Android Cookbook

by Android Community Experts

Printed in the United States of America.

Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.

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Editor: Ian F. Darwin

Production Editor:

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November 2011: First Edition.

Revision History for the First Edition:

See http://oreilly.com/catalog/errata.csp?isbn=9781449388416 for release details.

Android is a trademark of Google, Inc. for their open-source operating environment for mobile devices.

Linux is a trademark of Linus Torvalds. Java is a trademark of Oracle America Corporation (formerly

Sun Microsystems).

Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of

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While every precaution has been taken in the preparation of this book, the publisher and authors assume

no responsibility for errors or omissions, or for damages resulting from the use of the information con-

tained herein.

ISBN: 978-1-449-38841-6

[?]

1318018084

Table of Contents

Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xiii

1. Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Introduction: Getting Started 1

1.2 Learning the Java Language 1

1.3 Hello World - Command Line 3

1.4 Hello World - Eclipse Version 5

1.5 Set Up an Android Virtual Device for Apps Testing 10

1.6 Set Up an IDE on Windows to Develop for Android 23

1.7 Android Lifecycle 32

1.8 Opening a Web Page, Phone Number or anything else with an Intent 33

1.9 Email Text From a View

1.10 Sending an email with attachments

1.11 Installing .apk files on the emulator

1.12 Installing apps onto an Android Emulator

1.13 Android Epoch HTML/Javascript Calendar

1.14 Sharing Java classes from another Eclipse Project

1.15 Referencing libraries to implement external functionality

1.16 Use SDK Samples to Help Avoid Head Scratching

1.17 Keeping the Android SDK Updated

1.18 Five Ways to Wire Up an Event Listener

1.19 Taking a Screenshot from the Emulator/Android Device

1.20 Program: A Simple CountDownTimer example

1.21 Program: Tipster, a tip calculator for the Android OS

2. Designing a successful Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

2.1 Introduction: Designing a Successful Android application

2.2 Keeping a Service running while other apps are on display

2.3 Starting a service after phone reboot

2.4 Exception Handling

2.5 Sending/Receive broadcast message

100

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