精通iOS 6开发：从入门到精通

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" Beginning IOS 6 Development - 由David Mark编写的iOS开发经典书籍，内容包括了从基础到高级的各种iOS应用开发技术。" 本书详细介绍了iOS 6开发的基础到高级主题，适合初学者和有一定经验的开发者。书中涵盖了一系列关键知识点，包括： 1. **欢迎来到丛林** (Chapter 1): 这一章通常会介绍iOS开发环境的设置，Xcode的基本使用，以及iOS开发的基础概念，帮助读者熟悉开发平台。 2. ** appeasing the Tiki Gods ** (Chapter 2): 这可能涉及到iOS开发中的基本编程概念和Apple的编程语言Objective-C或Swift的基础知识，包括变量、数据类型、控制流程等。 3. **处理基本交互** (Chapter 3): 这一部分会讲解如何创建用户界面元素，如按钮、文本框等，并处理用户的输入事件，实现基本的用户交互功能。 4. **更多用户界面乐趣** (Chapter 4): 深入介绍更复杂的UI设计，可能包括自定义视图、动画效果和布局管理。 5. **自动旋转和自动调整大小** (Chapter 5): 讨论如何在不同设备方向和屏幕尺寸下适当地展示内容，包括AutoLayout和AutoRotation的使用。 6. **多视图应用程序** (Chapter 6): 教授如何在应用程序中切换和管理多个视图，以及视图控制器之间的导航。 7. **TabBars和Pickers** (Chapter 7): 涉及到使用TabBarController和UIPickerView创建交互式用户界面的技巧。 8. **表格视图介绍** (Chapter 8): 引导读者了解UITableView的使用，包括数据源和代理方法，以及如何加载和显示数据。 9. **导航控制器和表格视图** (Chapter 9): 解释如何结合使用NavigationController和TableView来构建层次结构的应用界面。 10. **故事板** (Chapter 10): 介绍使用故事板进行界面设计的优势，以及如何在不同场景之间进行跳转。 11. **iPad考量** (Chapter 11): 针对iPad的特殊特性，如SplitViewController，以及如何优化iPad应用的设计。 12. **应用设置和UserDefaults** (Chapter 12): 讲解如何保存和读取用户偏好设置，使用NSUserDefaults进行轻量级数据存储。 13. **基本数据持久化** (Chapter 13): 探讨Core Data、SQLite等技术，用于应用程序的数据持久化。 14. **Hey! You! Get onto iCloud!** (Chapter 14): 教导如何集成iCloud，实现跨设备的数据同步。 15. **Grand Central Dispatch, Background Processing and You** (Chapter 15): 介绍GCD（Grand Central Dispatch）以及后台处理，帮助开发者理解多线程和并发编程。 16. **使用Quartz和OpenGL绘图** (Chapter 16): 讲述如何利用这些图形库创建自定义的视觉效果和高级图形界面。 17. **点击、触摸和手势** (Chapter 17): 深入探讨触摸事件的处理，包括识别和响应各种手势。 18. **未完待续** (Chapter 18): 书中可能还包含其他高级主题，如网络编程、推送通知、游戏开发或者性能优化等。这本书不仅提供了理论知识，还有实践示例，帮助读者通过实际操作掌握iOS开发。书中的"Contents at a Glance"部分方便读者快速定位和查阅所需内容。对于想要深入学习iOS开发的人来说，这是一本非常有价值的参考资料。

12 CHAPTER 2: Appeasing the Tiki Gods

Figure 2-1. The Xcode welcome window

The project we’re going to build in this chapter is contained in the 02 Hello World folder of the

project archive.

Before we can start, we need to launch Xcode. Xcode is the tool that we’ll use to do most of what

we do in this book, and after downloading it from the Mac App Store you’ll find it installed in the

/Applications folder as with most Mac applications. You’ll be using Xcode a lot, so you might want to

consider dragging it to your dock so you’ll have ready access to it.

If this is your first time using Xcode, don’t worry; we’ll walk you through every step involved in

creating a new project. If you’re already an old hand but haven’t worked with Xcode 4, you will find

that quite a bit has changed (mostly for the better, we think).

When you first launch Xcode, you’ll be presented with a welcome window like the one shown in

Figure 2-1. From here, you can choose to create a new project, connect to a version-control system

to check out an existing project, or select from a list of recently opened projects. The welcome

window also contains links to iOS and Mac OS X technical documentation, tutorial videos, news,

sample code, and other useful items. All of this functionality can be accessed from the Xcode menu

as well, but this window gives you a nice starting point, covering some of the most common tasks

you’re likely to want to do after launching Xcode. If you feel like poking through the information here

for a few minutes, by all means go right ahead. When you’re finished, close the window, and we’ll

proceed. If you would rather not see this window in the future, just uncheck the Show this window

when Xcode launches checkbox before closing it.

15CHAPTER 2: Appeasing the Tiki Gods

We also need to specify the Device Family. In other words, Xcode wants to know if we’re building

an app for the iPhone and iPod touch, if we’re building an app for the iPad, or if we’re building a

universal application that will run on all iOS devices. Select iPhone for the Device Family if it’s not

already selected. This tells Xcode that we’ll be targeting this particular app at the iPhone and iPod

touch, which have the same screen size. For the first part of the book, we’ll be using the iPhone

device family, but don’t worry—we’ll cover the iPad also.

There are three checkboxes on this sheet. You should check the middle option, Use Automatic

Reference Counting, but uncheck the other two. Automatic Reference Counting (ARC) is a recent

addition to the Objective-C language, introduced with iOS 5, that makes your life much easier. We’ll

talk briefly about ARC in the next chapter.

The Use Storyboard option will be covered starting in Chapter 10. The other option—Include Unit

Tests—will set up your project in such a way that you can add special pieces of code to your

project, called unit tests, which are not part of your application but run every time you create your

application to test certain functionality. Unit tests allow you to identify when a change made to your

code breaks something that was previously working. Although it can be a valuable tool, we won’t be

using automated unit testing in this book, so you can leave its box unchecked.

Click Next again, and you’ll be asked where to save your new project using a standard save sheet,

as shown in Figure 2-4. If you haven’t already done so, jump over to the Finder and create a new

master directory for these book projects, and then return to Xcode and navigate into that directory.

Before you click the Create button, make note of the the Create local git repository for this project

checkbox. We won’t be talking about git in this book, but Xcode includes some support for using git

and other kinds of source control repositories. If you are already familiar with git and want to use it,

leave this checkbox enabled, but otherwise feel free to turn it off.

Figure 2-4. Saving your project in a project folder on your hard drive

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