iOS 7开发基础：Objective-C、Xcode与Cocoa入门指南

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《iOS 7编程基础：Objective-C、Xcode与Cocoa基础知识》是一本由Matt Neuburg所著的实用指南，专为iOS开发初学者以及希望深化理解基本概念的开发者设计。该书出版于2013年10月，由O'Reilly Media发行，以英文撰写，ISBN-10: 1491945575和ISBN-13: 978-1491945575。书中内容涵盖了Objective-C语言的核心，帮助读者理解这种面向对象的语言如何在iOS开发中运作。作者指导读者探索Objective-C的基本概念，如对象的创建及其重要性，深入剖析Xcode项目的生命历程，从项目的初始化到App Store发布。通过学习如何使用nibs和 nib编辑器构建用户界面，读者能够掌握Cocoa框架下Objective-C语言的特性运用。 Cocoa框架利用Objective-C的语义特性，展示了事件驱动模型和主要设计模式的应用。此外，书中的章节还会介绍访问器、key-value coding和属性的作用，以及自动引用计数（ARC）在对象内存管理中的关键角色。作者还将教导读者如何在Cocoa对象之间发送消息和数据传输。值得注意的是，虽然本书详尽地讲解了iOS 7的基础，但它并不是孤立的教程，而是作为作者后续作品《Programming iOS 7》（预计2013年12月发布）的前置基础。这表明作者的系列旨在提供一个循序渐进的学习路径，确保读者在掌握基础后能够顺利进入更复杂的iOS应用开发。版权信息显示，所有权利归作者Matt Neuburg所有，本书在美国印刷，O'Reilly Media出版社负责编辑、生产和发行工作，同时也提供了在线版本供读者选择。读者可以联系O'Reilly的机构销售部门获取更多详情或获取电子版。《iOS 7编程基础：Objective-C、Xcode与Cocoa Basics》是一本实用的入门书籍，不仅提供了理论知识，还辅以GitHub上的示例项目，为iOS开发者提供了一个扎实的起点，帮助他们逐步掌握iOS应用程序开发的核心技术和工具。

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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