Cocoa与Objective-C实战指南

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"Cocoa 和 Objective-C 是苹果操作系统（如 macOS 和 iOS）开发中的核心框架和技术。本书《Cocoa and Objective-C: Up and Running》由 Scott Stevenson 编写，旨在帮助开发者快速上手并深入理解这两者。" 《Cocoa and Objective-C: Up and Running》是一本针对初学者和有一定经验的开发者准备的教程，它涵盖了Cocoa框架和Objective-C语言的基础知识，旨在让读者能够快速构建功能丰富的 macOS 和 iOS 应用程序。Objective-C 是一种面向对象的编程语言，它是苹果生态系统中的主要编程语言，为开发Cocoa应用提供了基础。在本书中，Scott Stevenson 将详细介绍以下关键知识点： 1. **Objective-C 基础**：讲解Objective-C的基本语法，包括消息传递、类、对象、协议、继承等概念，以及如何使用Xcode IDE进行项目设置和调试。 2. **Cocoa 框架**：Cocoa是苹果操作系统的核心框架，包含众多用于UI设计、事件处理、数据存储等的类库。书中会介绍NSApplication、NSWindow、NSView等基本组件，以及Model-View-Controller (MVC) 设计模式的应用。 3. **用户界面设计**：学习如何使用Interface Builder来创建和设计应用程序的图形用户界面，以及如何将界面元素与代码逻辑连接起来。 4. **事件处理**：了解事件驱动编程，包括鼠标点击、键盘输入等事件的处理方法。 5. **Core Data**：苹果提供的数据管理框架，用于持久化应用程序的数据。书中会介绍如何设置数据模型，以及如何在代码中使用Core Data进行增删查改操作。 6. **网络编程**：讲解如何在Objective-C中实现网络通信，如HTTP请求、JSON解析等。 7. **测试和调试**：介绍如何编写单元测试，以及使用Xcode的调试工具进行代码调试。 8. **性能优化**：讨论如何提高Cocoa应用的性能，减少内存消耗，以及优化代码执行效率。 9. **最佳实践**：分享Cocoa和Objective-C开发中的最佳实践，以帮助开发者编写出更高效、更易于维护的代码。通过阅读本书，读者不仅能掌握Objective-C语言和Cocoa框架的基本知识，还能了解到如何利用这些知识来构建实际的应用程序，从而在苹果平台上开发出高质量的软件产品。无论是对苹果开发感兴趣的初学者还是寻求技术提升的开发者，都能从中受益。

Chapter 11

Now that you’ve read through the book, you’re ready to write some apps. This

short chapter gives you a few last pointers to help you on your way.

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.

Constant width

Used for program listings, as well as within paragraphs to refer to program elements

such as variable or function names, databases, data types, environment variables,

statements, and keywords.

Constant width bold

Shows commands or other text that should be typed literally by the user.

Constant width italic

Shows text that should be replaced with user-supplied values or by values deter-

mined by context.

This icon signifies a tip, suggestion, or general note.

This icon indicates a warning or caution.

Using Code Examples

This book is here to help you get your job done. In general, you may use the code in

this book in your programs and documentation. You do not need to contact us for

permission unless you’re reproducing a significant portion of the code. For example,

writing a program that uses several chunks of code from this book does not require

permission. Selling or distributing a CD-ROM of examples from O’Reilly books does

require permission. Answering a question by citing this book and quoting example

code does not require permission. Incorporating a significant amount of example code

from this book into your product’s documentation does require permission.

We appreciate, but do not require, attribution. An attribution usually includes the title,

author, publisher, and ISBN. For example: “Cocoa and Objective-C: Up and Running

xiv | Preface

For more information about our books, conferences, Resource Centers, and the

O’Reilly Network, see our website at:

http://www.oreilly.com

Acknowledgments

My education didn’t follow the normal path. I taught myself how to program and

learned how to run a business mostly by trial and error. In the end, I think this is the

only option that would have worked for me, but it was possible only because of my

extremely patient and understanding family: my mom, Peggy; my dad, Alan; and my

sister, Jamie. You would not be reading this now if it was not for their support.

There are so many people that have helped me in my work life, but there are a few that

have had a direct impact on this book.

Michael Lopp and Angela Muller were ongoing sources of encouragement and inspi-

ration. This book first came into being over lunch when Michael mentioned something

along the lines of “everyone wants an animal on the cover of their book,” referring to

the iconic O’Reilly covers. By incredible coincidence, Brian from O’Reilly emailed me

about two weeks later. Had Michael not made that comment, this might not have

happened.

I had world-class tech reviewers for this project: Joar Wingfors, Michael Jurewitz, Rob

Rhyne, and Tim Triemstra. Joar, who I originally met through the tutorials I posted

online, tirelessly reviewed an ever-changing book, provided a wealth of essential com-

ments and suggestions, and even helped me fix some bugs in the code. He’s one of the

most talented engineers I know, and I am thrilled to have been able to get his help on

this.

Though he wasn’t involved in this project, I owe a lot to John Mora. He has an ability

to look an impossibly large task in the face and just do it, despite the usual doubts about

whether you know enough or have enough time. It is one of the most impressive traits

I know of, and John has it in spades. Thankfully, I think some of that rubbed off on

me over the 15 years I’ve known him.

Thanks to Kip Krueger for patiently helping me figure out the low-level details of mem-

ory and offering pointers when I was learning C. His mentoring is the reason I’m able

to teach these topics to you now.

When I first started learning Cocoa, there were only two books out on the topic. I chose

Aaron Hillegass’s book Cocoa Programming for Mac OS X ( A d d i s o n - W e s l e y ) . N o t o n l y

was it the first Mac programming book I read, it was the first technical book I actually

enjoyed. His book proved to me that you could write in a direct and personal style and

still be taken seriously. Having spent time with him in person, I can also add that he’s

a great guy. There’s no doubt that his influence is weaved into the tutorials I’ve written.

xvi | Preface

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