使用Android 3.0 SDK构建移动应用

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"Pro Android_3 是一本关于使用Android 3.0 SDK构建实际应用和娱乐移动应用的专业指南，由Satya Komatineni、Dave MacLean和Sayed Y. Hashimi合著。" 在《Pro Android 3》这本书中，作者们深入浅出地介绍了Android 3.0 SDK的开发知识，这是一版专门针对当时最新Android操作系统的开发者指南。Android 3.0（代号Honeycomb）是Google专门为平板电脑设计的一个版本，带来了许多针对大屏幕优化的特性和API。这本书的主要目标读者是对Android开发感兴趣的程序员，无论是初学者还是经验丰富的开发者，都能从中获取到宝贵的实践经验和技巧。书中涵盖了以下关键知识点： 1. **Android开发环境搭建**：如何配置Android Studio（尽管此书出版时可能使用的是Eclipse和ADT），包括SDK下载、安装和更新，以及建立第一个Hello World项目。 2. **Android应用程序结构**：讲解了Android应用的基本架构，如Activity、Intent、Service、BroadcastReceiver和ContentProvider，以及它们在应用中的作用和交互方式。 3. **用户界面设计**：详细介绍了使用XML布局文件创建用户界面的方法，包括控件的使用、布局管理器、触摸事件处理和手势识别。特别强调了对平板设备的适配，如使用Fragment来支持多窗格视图。 4. **数据存储**：涵盖了SQLite数据库的使用，包括创建数据库、表，以及执行CRUD（创建、读取、更新、删除）操作。同时，也讨论了SharedPreferences和内部/外部存储的使用。 5. **网络编程**：讲解如何使用HttpURLConnection或Volley库进行网络请求，处理JSON或XML数据，实现同步和异步通信。 6. **多媒体支持**：介绍了如何集成音频、视频和图像处理功能，如播放本地和在线媒体，以及使用Camera API拍照和录制视频。 7. **传感器与位置服务**：探讨了如何利用加速度计、陀螺仪等传感器数据，以及如何集成Google Maps API实现定位和地图显示。 8. **通知和推送服务**：讲解了如何使用Notification API创建和管理通知，以及如何集成Google Cloud Messaging (GCM) 或Firebase Cloud Messaging (FCM) 实现后台消息推送。 9. **性能优化**：提供性能调优的策略，如使用ProGuard进行代码压缩，避免内存泄漏，以及多线程和异步任务的处理。 10. **测试与调试**：介绍了单元测试、集成测试和UI自动化测试的方法，以及使用Android Debug Bridge (ADB) 和Logcat进行调试。通过这本书，读者不仅可以学习到Android 3.0的开发技术，还能掌握软件工程的最佳实践，从而能够开发出高效、稳定且用户体验良好的Android应用。虽然Android操作系统已经迭代到了更高版本，但书中很多基础概念和最佳实践仍然适用于当前的Android开发。

■ CONTENTS

Temperature Sensors .................................................................................................................................... 907



Pressure Sensors ........................................................................................................................................... 907

Gyroscope Sensors ........................................................................................................................................ 907

Accelerometers .............................................................................................................................................. 908

Magnetic Field Sensors ................................................................................................................................. 914

Using Accelerometers and Magnetic Field Sensors Together ....................................................................... 915

Orientation Sensors ................................................................................................................................ ....... 915

Magnetic Declination and GeomagneticField ................................................................................................ 922

Gravity Sensors .............................................................................................................................................. 923

Linear Acceleration Sensors .......................................................................................................................... 923

Rotation Vector Sensors ................................................................................................................................ 923

Near Field Communication Sensors ............................................................................................................... 923

References .......................................................................................................................................................... 934

Summary ............................................................................................................................................................ 935

■

Chapter 27: Exploring the Contacts API ...................................................... 937

Understanding Accounts ..................................................................................................................................... 938

A Quick Tour of Account Screens .................................................................................................................. 938

Relevance of Accounts to Contacts ............................................................................................................... 942

Enumerating Accounts ................................................................................................................................... 943 

Understanding Contacts Application ................................................................................................................... 944 

Show Contacts ............................................................................................................................................... 944

Show Contact Detail ....................................................................................................................................... 945

Edit Contact Details ........................................................................................................................................ 946

Setting a Contact’s Photo .............................................................................................................................. 948

Exporting Contacts ......................................................................................................................................... 949

Various Contact Data Types ........................................................................................................................... 951

Understanding Contacts ...................................................................................................................................... 952 

Examining the Contents SQLite Database ...................................................................................................... 952

Raw Contacts ................................................................................................................................................. 953

Data Table ...................................................................................................................................................... 955

Aggregated Contacts ..................................................................................................................................... 956

view_contacts ................................................................................................................................................ 958 

contact_entities_view ................................................................................................................................... 959

Working with the Contacts API ........................................................................................................................... 960 

Exploring Accounts ........................................................................................................................................ 960

Exploring Aggregated Contacts ...................................................................................................................... 968

Exploring Raw Contacts ................................................................................................................................. 977

Exploring Raw Contact Data .......................................................................................................................... 982

Adding a Contact and Its Details .................................................................................................................... 985

Controlling Aggregation ...................................................................................................................................... 988

Impacts of Syncing ................................................................................................................................ ............. 989 

References .......................................................................................................................................................... 990

Summary ............................................................................................................................................................ 991

■

Chapter 28: Deploying Your Application: Android Market and Beyond ....... 993

Becoming a Publisher ......................................................................................................................................... 994

Following the Rules ....................................................................................................................................... 994

Developer Console ......................................................................................................................................... 997

Preparing Your Application for Sale .................................................................................................................. 1001

Testing for Different Devices ....................................................................................................................... 1001

Supporting Different Screen Sizes ............................................................................................................... 1001

Preparing AndroidManifest.xml for Uploading ............................................................................................. 1002

Localizing Your Application .......................................................................................................................... 1003

■ CONTENTS

xvi

Preparing Your Application Icon ................................................................................................................... 1004



Considerations for Making Money From Apps ............................................................................................. 1004

Directing Users Back to the Market ............................................................................................................. 1005

The Android Licensing Service .................................................................................................................... 1006

Preparing Your .apk File for Uploading ........................................................................................................ 1007

Uploading Your Application ............................................................................................................................... 1007

User Experience on Android Market ................................................................................................................. 1010

Beyond Android Market .................................................................................................................................... 1012

References ........................................................................................................................................................ 1013

Summary .......................................................................................................................................................... 1013

■

Chapter 29: Fragments for Tablets and More ............................................ 1015

What is a Fragment? ......................................................................................................................................... 1015

When to Use Fragments ............................................................................................................................... 1016

The Structure of a Fragment ........................................................................................................................ 1017

A Fragment’s Lifecycle ................................................................................................................................ 1018

Sample Fragment App Showing the Lifecycle ............................................................................................. 1024

FragmentTransactions and the Fragment Back Stack ...................................................................................... 1032

Fragment Transaction Transitions and Animations ..................................................................................... 1034

The FragmentManager ...................................................................................................................................... 1035

Caution When Referencing Fragments ........................................................................................................ 1037

ListFragments and <fragment> .................................................................................................................. 1037

Invoking a Separate Activity When Needed ................................................................................................. 1041

Persistence of Fragments ............................................................................................................................ 1044

Understanding Dialog Fragments ..................................................................................................................... 1044

DialogFragment Basics ................................................................................................................................ 1045

DialogFragment Sample Application ............................................................................................................ 1050

More Communications with Fragments ............................................................................................................ 1063

Using startActivity() and setTargetFragment() ............................................................................................. 1064

Custom Animations with ObjectAnimator ......................................................................................................... 1064

References ........................................................................................................................................................ 1067

Summary .......................................................................................................................................................... 1068

■

Chapter 30: Exploring ActionBar ............................................................... 1069

Anatomy of an ActionBar .................................................................................................................................. 1070

Tabbed Navigation Action Bar Activity .............................................................................................................. 1071

Implementing Base Activity Classes ............................................................................................................ 1073

Assigning Uniform Behavior for the ActionBar ............................................................................................. 1075

Implementing the Tabbed Listener .............................................................................................................. 1077

Implementing the Tabbed Action Bar Activity .............................................................................................. 1078

Scrollable Debug Text View Layout .............................................................................................................. 1080

Action Bar and Menu Interaction ................................................................................................................. 1081

Android Manifest File ................................................................................................................................... 1083

Examining the Tabbed Action Bar Activity ................................................................................................... 1084

List Navigation Action Bar Activity .................................................................................................................... 1084

Creating a SpinnerAdapter ........................................................................................................................... 1085

Creating a List Listener ................................................................................................................................ 1086

Setting Up a List Action Bar ......................................................................................................................... 1086

Making Changes to BaseActionBarActivity .................................................................................................. 1087

Making Changes to AndroidManifest.xml .................................................................................................... 1087

Examining the List Action Bar Activity ......................................................................................................... 1088

Standard Navigation Action Bar Activity ........................................................................................................... 1090 

Standard Navigation Action Bar Activity ...................................................................................................... 1090

Making Changes to BaseActionBarActivity .................................................................................................. 1091

■ CONTENTS

xvii

Making Changes to AndroidManifest.xml .................................................................................................... 1092



Examining the Standard Action Bar activity ................................................................................................. 1092

References ........................................................................................................................................................ 1093

Summary .......................................................................................................................................................... 1094

■

Chapter 31: Additional Topics in 3.0 ......................................................... 1097

List-Based Home Screen Widgets .................................................................................................................... 1097

New Remote Views in 3.0 ............................................................................................................................ 1098

Working with Lists in Remote Views ............................................................................................................ 1099

Working Sample: Test Home Screen List Widget ......................................................................................... 1114

Testing the Test List Widget ........................................................................................................................ 1122

Drag and Drop ................................................................................................................................................... 1124 

Basics of Drag and Drop in 3.0 .................................................................................................................... 1124

Drag and Drop Sample Application .............................................................................................................. 1125

Testing the Sample Drag-and-Drop Application .......................................................................................... 1137

References ........................................................................................................................................................ 1138

Summary .......................................................................................................................................................... 1139

Index ............................................................................................................. 1141

xix

About the Authors

Satya Komatineni (www.satyakomatineni.com ) has over 20 years of programming

experience working with small and large corporations. Satya has published over

30 articles on web development using Java, .NET, and database technologies. He

is a frequent speaker at industry conferences on innovative technologies and a

regular contributor to the weblogs on Java.net. He is the author of AspireWeb

(www.activeintellect.com/aspire), a simplified open source tool for Java web

development, and the creator of Aspire Knowledge Central

(www.knowledgefolders.com), an open source personal web operating system with

a focus on individual productivity and publishing. Satya is also a contributing

member to a number of Small Business Innovation Research Programs (SBIR). He received a

bachelor’s degree in electrical engineering from Andhra University, Visakhapatnam, and a master’s

degree in electrical engineering from the Indian Institute of Technology, New Delhi. You can

contact him at satya.komatineni@gmail.com.

Dave MacLean is a software engineer and architect currently living and

working in Jacksonville, Florida. Since 1980, he has programmed in many

languages, developing solutions ranging from robot automation systems to

data warehousing, from web self-service applications to EDI transaction

processors. Dave has worked for Sun Microsystems, IBM, Trimble Navigation,

General Motors, and several small companies. He graduated from the

University of Waterloo in Canada with a degree in systems design engineering.

Visit his blog at http://davemac327.blogspot.com or contact him at

davemac327@gmail.com.

Sayed Y. Hashimi was born in Afghanistan and now resides in Jacksonville,

Florida. His expertise spans the fields of health care, financials, logistics, and

service-oriented architecture. In his professional career, Sayed has developed

large-scale distributed applications with a variety of programming languages

and platforms, including C/C++, MFC, J2EE, and .NET. He has published

articles in major software journals and has written several other popular Apress

titles. Sayed holds a master’s degree in engineering from the University of

Florida. You can reach him by visiting www.sayedhashimi.com.

Please visit the authors at their web site: www.androidbook.com.

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