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Android Application Development

Android Application Development

Editor:Production Editor:Copyeditor:Proofreader:Indexer:Cover Designer:Interior Designer:Illustrator:

Printing History:

TM

Table of Contents

Preface ..................................................................... ix

Part I. Development Kit Walk-Through 1. Getting to Know Android ................................................. 3

2. Setting Up Your Android Development Environment ......................... 13

3. Using the Android Development Environment for Real Applications ............ 27

iii

4. Under the Covers: Startup Code and Resources in the MJAndroid Applicatio

n .... 43

5. Debugging Android Applications ......................................... 57

6. The ApiDemos Application ............................................... 81

7. Signing and Publishing Your Application ................................... 87

iv | Table of Contents

Part II. Programming Topics 8. Persistent Data Storage: SQLite Databases and Content Providers ............. 101

9. Location and Mapping ................................................. 137

10. Building a View ....................................................... 157

Table of Contents | v

11. A Widget Bestiary ..................................................... 187

12. Drawing 2D and 3D Graphics ............................................ 221

13. Inter-Process Communication ........................................... 257

vi | Table of Contents

14. Simple Phone Calls .................................................... 277

15. Telephony State Information and Android Telephony Classes ................ 287

Appendix: Wireless Protocols ................................................. 305

Index ..................................................................... 309Table of Contents | vii

Preface

Audience

ix

How This Book Is Organized

adb x | Preface

Conventions Used in This Book

Constant width

Constant width bold

Constant width italic

Using Code Examples

Preface | xi

Safari® Books Online

How to Contact Us

xii | Preface

Acknowledgments

Rick Rogers

John Lombardo

Zigurd Mednieks

Blake Meike

Preface | xiii

PART I

Development Kit Walk-Through

CHAPTER 1

Getting to Know AndroidWhy Android?

3

The Open Handset Alliance

4 | Chapter 1:ಗGetting to Know Android

The Android Execution Environment

The Android Execution Environment | 5

Components of an Android Application

6 | Chapter 1:ಗGetting to Know Android

content://contacts/people

Components of an Android Application | 7

Android Activity Lifecycle

onCreate onCreate

Bundle

Start activity

User navigates

back to activity

Process is killed

Activity comes

to foreground

Activity no longer visibleNO

YES

Activity interacts

with userActivity becomes visible

Activity exitsonCreate()

onStart()

In foreground?

onResume() onPause() onStop() onDestroy()onRestart()

8 | Chapter 1:ಗGetting to Know Android

onStart onStart onResume onStop onResume onStart onResume onPause onStop onDestroy finish

Android Activity Lifecycle | 9

Android Service Lifecycle

onCreate onStart

Context.startService(Intent)

onCreate onStart onStart onStart onResume onPause onStop onPause onResumeonStop onBind

Context.bind

Service

onCreate onStartonBind IBind onDestroy onDestroy onStart

How This Book Fits Together

10 | Chapter 1:ಗGetting to Know Android

SQLite

How This Book Fits Together | 11

12 | Chapter 1:ಗGetting to Know Android

CHAPTER 2

Setting Up Your Android

Development EnvironmentSetting Up Your Development Environment 13

Creating an Android Development Environment

chmod +x jdk-6version-linux- i586.bin

14 | Chapter 2:ಗSetting Up Your Android Development Environment

Setting Up Your Development Environment | 15

16 | Chapter 2:ಗSetting Up Your Android Development Environment

export PATH=${PATH}: your_sdk_dir /tools your_sdk_dir export PATH=${PATH}: your_sdk_dir /tools your_sdk_dir

Setting Up Your Development Environment | 17

Hello, Android

Where We're Going

Starting a New Android Application: HelloWorld

18 | Chapter 2:ಗSetting Up Your Android Development Environment

com.oreilly.helloworld Hello

WorldActivity

Hello, Android | 19

HelloWorldActivity

20 | Chapter 2:ಗSetting Up Your Android Development Environment

Hello, Android | 21

Writing HelloWorld

HelloWorldActivity.java

package com.oreilly.helloworld; import android.app.Activity; import android.os.Bundle; public class HelloWorldActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main);

22 | Chapter 2:ಗSetting Up Your Android Development Environment

Hello

WorldActivity

OnCreate

OnCreate

savedInstanceState

OnCreate

setContentView (R.layout.main);

Hello, Android | 23

android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello"

Running HelloWorld

24 | Chapter 2:ಗSetting Up Your Android Development Environment

android:text hello app_name app_name

HelloAndroid

Hello, Android | 25

26 | Chapter 2:ಗSetting Up Your Android Development Environment

CHAPTER 3

Using the Android Development

Environment for Real ApplicationsMicroJobs: This Book's Main Sample Application

Android and Social Networking

quotesdbs_dbs4.pdfusesText_8

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