iOS 6实战指南：98技术详解

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"iOS in Practice" 是一本针对iOS开发者的重要教程，专为那些想要深入了解iOS应用开发的读者精心设计。该书由BearCahill撰写，涵盖了iOS 6版本的所有核心内容，这是在2013年发行的一本经典之作。书中包含98个实用的技术技巧，全面深入地讲解了iOS平台的各种开发策略和技术细节。作者 BearCahill以其丰富的经验和深厚的专业知识，确保了读者能够掌握从基础到高级的iOS开发技能。本书不仅适合初次接触iOS开发的新手，也对有经验的开发者提供有价值的参考和更新的知识点，帮助他们在iOS 6的时代保持竞争力。 "iOS in Practice" 不仅是一本技术手册，还包含了对于iOS平台架构、界面设计、用户体验、性能优化等方面的深度解析。读者可以从中学习如何构建高效、稳定的iOS应用，并了解苹果公司在那个时代的最佳实践。此外，Manning出版社出版的电子版清晰易读，提供了方便的学习体验。对于想要批量订购或获取更多优惠的读者，可以通过访问曼宁公司的官方网站www.manning.com获取详情，并通过电子邮件orders@manning.com联系特殊销售部门进行咨询。版权方面，该书受到Manning Publications Co.的严格保护，未经出版商书面许可，任何复制、存储或传输行为都必须遵守版权法规定。书中提及的产品名称和制造商商标通常表示其品牌所有权，Manning在印刷时尊重了这些商标声明。为了确保作品的持久价值，Manning采用了酸性纸张，这是一种抗化学降解的优质材料，有助于延长书籍的使用寿命，体现了出版社对知识传承的重视。"iOS in Practice" 是iOS开发者必备的参考资料，是探索iOS 6世界及其后续版本的最佳指南。

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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