iOS 7编程基础：Objective-C, Xcode与Cocoa入门

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"iOS 7 Programming Fundamentals 是一本英文原版的教程，专注于教授iOS 7的编程基础，包括Objective-C、Xcode和Cocoa Basics。该书由Matt Neuburg撰写，适合iOS和iPhone编程的学习者。" 在本书中，作者Matt Neuburg深入浅出地介绍了iOS 7开发所需的关键技术，包括以下几个核心知识点： 1. **Objective-C**：Objective-C是iOS应用开发的基础语言，书中详细讲解了其语法特性，如消息传递、类别、协议、面向对象编程等概念。读者将学会如何编写Objective-C代码，理解其与C语言的结合以及如何利用Objective-C进行程序设计。 2. **Xcode**：作为苹果官方的集成开发环境（IDE），Xcode是iOS开发者不可或缺的工具。书中涵盖了Xcode的使用技巧，包括创建项目、界面设计、调试、构建和部署应用等。这将帮助读者掌握高效的开发流程。 3. **Cocoa Basics**：Cocoa Touch是iOS开发的核心框架，它提供了实现用户界面和应用程序逻辑的API。书中会介绍UIKit、Core Data、Core Animation等相关组件，让读者了解如何构建触摸驱动的交互式界面，管理数据模型，以及实现流畅的动画效果。 4. **iOS 7特性**：iOS 7带来了许多新特性和设计风格的变化，如扁平化设计、控制中心、多任务处理等。本书将阐述这些新功能如何融入到应用开发中，帮助开发者适应新的设计原则和用户体验标准。 5. **编程实践**：通过一系列的实例和练习，读者将有机会实践所学知识，包括创建简单的应用，处理用户输入，实现网络通信，以及访问设备硬件功能等。 6. **软件工程**：除了技术细节，书中还会涉及软件开发的最佳实践，如代码组织、版本控制、测试和性能优化，这些都是成为一名专业iOS开发者必备的技能。 7. **资源和社区**：书中可能还会介绍一些开发者社区、论坛和在线资源，帮助读者持续学习和解决遇到的问题。《iOS 7 Programming Fundamentals》是一本全面介绍iOS开发基础的教程，无论你是初学者还是有经验的开发者，都能从中获益，提升自己的iOS开发能力。

Acknowledgments

My thanks go first and foremost to the people at O’Reilly Media who have made writing

a book so delightfully easy: Rachel Roumeliotis, Sarah Schneider, Kristen Brown, and

Adam Witwer come particularly to mind. And let’s not forget my first and long-standing

editor, Brian Jepson, who had nothing whatever to do with this edition, but whose

influence is present throughout.

I have been saved from many embarrassing errors by the sharp and dedicated eyes of

Peter Olsen, a long-time reader who faithfully posts notes to the book’s online Errata

page, apparently just because that’s the kind of amazing and dedicated person he is.

As in the past, I have been greatly aided by some fantastic software, whose excellences

I have appreciated at every moment of the process of writing this book. I should like to

mention, in particular:

• git (http://git-scm.com)

• SourceTree (http://www.sourcetreeapp.com)

•

TextMate (http://macromates.com)

• AsciiDoc (http://www.methods.co.nz/asciidoc)

• BBEdit (http://barebones.com/products/bbedit/)

• Snapz Pro X (http://www.ambrosiasw.com)

• GraphicConverter (http://www.lemkesoft.com)

•

OmniGraffle (http://www.omnigroup.com)

The book was typed and edited entirely on my faithful Unicomp Model M keyboard

(http://pckeyboard.com), without which I could never have done so much writing over

so long a period so painlessly. For more about my physical work environment, see http://

matt.neuburg.usesthis.com.

From the Programming iOS 4 Preface

The popularity of the iPhone, with its largely free or very inexpensive apps, and the

subsequent popularity of the iPad, have brought and will continue to bring into the fold

many new programmers who see programming for these devices as worthwhile and

doable, even though they may not have felt the same way about OS X. Apple’s own annual

WWDC developer conventions have reflected this trend, with their emphasis shifted

from OS X to iOS instruction.

The widespread eagerness to program iOS, however, though delightful on the one hand,

has also fostered a certain tendency to try to run without first learning to walk. iOS gives

the programmer mighty powers that can seem as limitless as imagination itself, but it

also has fundamentals. I often see questions online from programmers who are evidently

xiv | Preface

deep into the creation of some interesting app, but who are stymied in a way that reveals

quite clearly that they are unfamiliar with the basics of the very world in which they are

so happily cavorting.

It is this state of affairs that has motivated me to write this book, which is intended to

ground the reader in the fundamentals of iOS. I love Cocoa and have long wished to

write about it, but it is iOS and its popularity that has given me a proximate excuse to

do so. Here I have attempted to marshal and expound, in what I hope is a pedagogically

helpful and instructive yet ruthlessly Euclidean and logical order, the principles on

which sound iOS programming rests, including a good basic knowledge of Objective-

C (starting with C itself) and the nature of object-oriented programming, advice on the

use of the tools, the full story on how Cocoa objects are instantiated, referred to, put in

communication with one another, and managed over their lifetimes, and a survey of

the primary interface widgets and other common tasks. My hope, as with my previous

books, is that you will both read this book cover to cover (learning something new often

enough to keep you turning the pages) and keep it by you as a handy reference.

This book is not intended to disparage Apple’s own documentation and example

projects. They are wonderful resources and have become more wonderful as time goes

on. I have depended heavily on them in the preparation of this book. But I also find that

they don’t fulfill the same function as a reasoned, ordered presentation of the facts. The

online documentation must make assumptions as to how much you already know; it

can’t guarantee that you’ll approach it in a given order. And online documentation is

more suitable to reference than to instruction. A fully written example, no matter how

well commented, is difficult to follow; it demonstrates, but it does not teach.

A book, on the other hand, has numbered chapters and sequential pages; I can assume

you know C before you know Objective-C for the simple reason that Chapter 1 precedes

Chapter 2. And along with facts, I also bring to the table a degree of experience, which

I try to communicate to you. Throughout this book you’ll see me referring to “common

beginner mistakes”; in most cases, these are mistakes that I have made myself, in addition

to seeing others make them. I try to tell you what the pitfalls are because I assume that,

in the course of things, you will otherwise fall into them just as naturally as I did as I

was learning. You’ll also see me construct many examples piece by piece or extract and

explain just one tiny portion of a larger app. It is not a massive finished program that

teaches programming, but an exposition of the thought process that developed that

program. It is this thought process, more than anything else, that I hope you will gain

from reading this book.

Conventions Used in This Book

The following typographical conventions are used in this book:

Italic

Indicates new terms, URLs, email addresses, filenames, and file extensions.

Preface | xv

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