iOS 6实践指南：98技术精华详解

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《iOS 6 in Practice》是一本备受iOS开发者推崇的经典之作，由BearCahill编著，专为那些想要深入理解和实践iOS 6技术的开发者设计。本书共涵盖了98个实用技巧，详细解析了苹果操作系统在第六代版本中的新特性和最佳实践。作为Manning出版社的作品，它不仅提供了丰富的技术指导，还展示了如何将这些技术融入到实际项目中，帮助开发者提升iOS应用的性能和用户体验。作者BearCahill以其扎实的理论基础和实战经验，将iOS 6的核心概念、界面设计、性能优化、框架整合等内容剖析得淋漓尽致。读者可以在这本书中找到从基础设置到高级功能的全面指南，包括但不限于故事板（Storyboard）的使用、Auto Layout的精细化布局、以及In-app Purchase和Game Center等新功能的实现策略。《iOS in Practice》系列书籍以其实践导向的特性，在业界享有很高的声誉。通过本书，读者不仅可以学习到技术细节，还能了解到如何结合Manning的在线资源进行进一步的学习和交流。如果你正在寻求提升iOS开发技能，这本书无疑是不可或缺的参考资料。购买渠道方面，想要获得此书或了解更多关于Manning出版的其他书籍，可以通过访问www.manning.com网站进行在线查询和订购，同时还可以享受到批量购买的折扣。对于更具体的信息，可以直接联系Manning Publications Co.的特别销售部门，地址位于纽约Shelter Island的20 Baldwin Road，邮编11964，或者发送邮件至orders@manning.com。版权方面，所有《iOS 6 in Practice》的内容均受到法律保护，未经Manning Publications Co.的书面许可，禁止任何形式的复制、存储或传输。此外，书中提到的一些制造商和卖家的产品名称可能是商标，Manning在知道的情况下已经标注了相应的标识。为了确保内容的持久保存，Manning出版社采取了酸碱纸张处理，以延长书籍的使用寿命。《iOS 6 in Practice》是一本既实用又有深度的iOS开发宝典，无论是初学者还是经验丰富的开发者，都能从中获益匪浅。

preface

My professional coding career has gone from large to small in a variety of ways. I

started on 3279 terminals at IBM, and with each professional move (from Ericsson to

Travelocity and others) I went to smaller machines and smaller companies. Now I

work on computers you can fit in your pocket and at a company of one: me.

When I first started working in mobile development, I used J2ME on various

phones, including Blackberries. When I got the chance to work on an iPhone, I pur-

chased my first MacBook and loved it! It wasn’t until sometime later that I realized that

I had gotten in at the beginning of the mobile wave. Solving problems alone, and often

under non-disclosure agreements, I learned a lot, and as each new version of the OS

came out, it got easier and better. The platform quickly became more sophisticated,

and so did the user.

Then Manning approached me to talk about a book on iOS development, and I

was surprised how clear and formed my opinions were about what should be included.

I had learned a lot on my own—from frameworks to widgets to the UI to MVC and

more—and I felt that emphasis was often placed on the wrong areas. I also felt that

the sample code provided by Apple was underemphasized. I believe that project-based

learning is the best—at least it is for me—and seeing how the different parts of a proj-

ect come together is not only useful but necessary to make sense of the project and

put it into context.

I was flattered that Manning asked me to write this book and I hope it will help you

to learn iOS development—and to put it into practice.

ABOUT THIS BOOKxviii

Roadmap

Part 1 covers the groundwork needed to get started in iOS development. In chapter 1,

you’ll get to develop your first Hello World app, but we’ll also cover some of the core

areas and concepts of iOS development. Chapter 2 covers the development environ-

ment, including Xcode for editing the code and user interface along with other con-

cepts and tools.

Chapter 3 begins part 2 with your first real app project: PicDecor. In this chapter

you’ll learn about view controllers and displaying images as well as how to interface

with sending email. You’ll see how to design the UI, and how to connect it to the code

you’re writing.

Chapter 4 builds on what you learned in chapter 3 about view controllers by show-

ing you table view controllers and how to access the address book.

Chapter 5 continues with access to images through the photo album and the cam-

era and how to manipulate those images. Also, in chapter 5 you’ll see how to display a

map and the user’s location and store data for later retrieval and display.

The Settings Bundle is the official way to have a user manage app settings and is

covered in chapter 6. Also covered are playing MP3s and detecting motion (particu-

larly shaking) of the device. Chapter 7 goes further in playing audio, allowing the user

to make playlists and play them via the iPad framework. This includes covering Core-

Data for database design and for storing app data.

Push notifications and in-app purchase both use external server interaction for

their functionality and are covered in chapter 8 for our Rock, Paper, Scissors game.

Chapter 9 continues the game with GameCenter interaction including leaderboards

and achievements.

Chapter 10 could be called the “iChapter” as it covers using the iTunes

API to

search music, designing for the iPad, and advertising using iAds.

Finally, chapter 11 covers the more recent additions to iOS. Specifically, it covers

the collection view, Social Framework, reminders, and UI state restoration.

Code conventions

There are many Objective-C code examples in this book edited with Xcode. Source

code in listings and text is in a

fixed-width

font

this

to separate it from ordi-

nary text.

Writing code for a book is challenging compared with writing code that isn’t going

to be published for the world to see. Restrictions on line length, readability, and con-

ciseness encouraged decisions I might not have made otherwise. You will find that I

may have added a method to a class that might not make the most sense, or named

some variables in less-than-perfect ways. Please concentrate on the content over form

in those cases.

As all aspects of mobile, websites, documentation, tools, and so on change regu-

larly, some images in the book may not match what you see online and elsewhere.

However, the concepts are likely to remain, and the variance you might see shouldn’t

cause confusion.

ABOUT THIS BOOK xix

Source code downloads

You will need a few things to benefit from the information presented in this book,

starting with an Apple computer. Then you will need to download Xcode and the

accompanying documentation, including public/open source libraries, as well as the

source code for the examples in the book. The chapters will then direct you on what

to do, one step at a time.

You will find the source code for the working examples in this book available for

download from the publisher’s website at www.manning.com/iOSinPractice.

You can also find some of the apps developed in this book in the Apple App Store.

About the title

The title of this book communicates its two core aspects—it covers iOS development

both in general and in practice. Learning happens best through examples and exer-

cises‚ as opposed to learning about theories or concepts in isolation. So I’ve included

numerous hands-on techniques and examples to get you started in iOS development.

About the author

Bear Cahill has worked in iOS development at Brainwash Inc. since 2008 and through

the development of several dozen apps. Prior to that, Bear worked at IBM, Ericsson,

and Travelocity, among other companies.

From REXX to BASIC to C++ to Java to Objective-C, along with several other lan-

guages, Bear has worked on a variety of platforms and technologies. He now focuses on

independent work, using friends to handle related server, Android, and other work.

Bear enjoys spending time with his wife and two sons around downtown Denton,

Texas. He has too many hobbies past and future to list here, so we’ll just say he’s never

been sky diving, scuba diving, or stage diving. No diving allowed!

Author Online

The purchase of iOS in Practice includes free access to a private forum run by Manning

Publications where you can make comments about the book, ask technical questions,

and receive help from the author and other users. You can access and subscribe to the

forum at www.manning.com/iOSinPractice. This page provides information on how

to get on the forum after you’re registered, what kind of help is available, and the

rules of conduct in the forum.

Manning’s commitment to our readers is to provide a venue where a meaningful

dialogue among individual readers and between readers and the author can take

place. It’s not a commitment to any specific amount of participation on the part of the

author, whose contribution to the book’s forum remains voluntary (and unpaid). We

suggest you try asking the author some challenging questions, lest his interest stray!

The Author Online forum and the archives of previous discussions will be accessi-

ble from the publisher’s website as long as the book is in print.

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iOS 6实践指南：98技术精华详解

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