iOS6开发基础教程：高清英文PDF指南

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"这是一本关于iOS6开发的基础教程，提供高清英文PDF版本。" 本书旨在引导初学者进入iOS应用开发的世界，特别针对iOS6这一版本进行深入讲解。内容涵盖从入门到进阶的各种主题，适合对iOS开发感兴趣的读者。书中通过清晰的章节划分，逐步介绍了iOS开发的核心概念和技术。作者和审阅者在业界具有丰富的经验，确保了教程的专业性和准确性。书中的章节包括： 1. 第一章“欢迎来到丛林”：介绍iOS开发环境的搭建，Xcode的使用，以及iOS开发的基本概念。 2. 第二章“安抚图腾神灵”：讲解Objective-C语言基础，Apple的开发工具和编程模型。 3. 第三章“处理基本交互”：涉及UI元素的创建和用户交互事件的响应，如按钮、文本框等。 4. 第四章“更多用户界面乐趣”：深入讨论更复杂的UI组件，如图像视图、滑块、开关等。 5. 第五章“自动旋转和自适应大小”：探讨如何让应用适配不同设备的方向和屏幕尺寸。 6. 第六章“多视图应用程序”：介绍如何在应用中切换和管理多个视图。 7. 第七章“标签栏和选择器”：讲解如何使用TabBar和PickerView来提升用户体验。 8. 第八章“表格视图简介”：深入学习UITableView的使用，包括数据源和代理方法。 9. 第九章“导航控制器和表格视图”：结合NavigationController来构建层级结构的界面。 10. 第十章“故事板”：介绍使用Storyboard进行界面设计和逻辑连接的方法。 11. 第十一章“iPad开发注意事项”：专门讨论针对iPad设备的特定设计和优化。 12. 第十二章“应用设置和UserDefaults”：学习存储用户偏好和简单数据的方法。 13. 第十三章“基本数据持久化”：讲解SQLite数据库和文件系统的使用，实现数据的长期存储。 14. 第十四章“嘿！上云！”：介绍Apple的iCloud服务，以及如何在应用中集成云同步功能。 15. 第十五章“大中央调度，后台处理与你”：探讨GrandCentralDispatch和后台任务处理，提高应用性能。 16. 第十六章“用Quartz和OpenGL绘图”：深入图形绘制技术，包括2D和3D渲染。 17. 第十七章“轻触、触摸和手势”：讲解触摸事件处理和手势识别，增强用户交互体验。 18. 第十八章“我在哪里？利用CoreLocation和MapKit定位”：使用GPS和其他定位技术，集成地图功能。 19. 第十九章“哇！陀螺仪和加速度计”：介绍利用硬件传感器实现动态感应和运动检测。每一章都包含了详细的教学内容，通过实例和实践项目帮助读者掌握每个主题。此外，书中的索引和目录（Contents at a Glance）提供了快速查找和跳转的功能，方便读者查阅和学习。这本书是iOS6开发者入门和进阶的理想资源，无论你是新手还是有一定经验的开发者，都能从中受益匪浅，掌握iOS应用开发的关键技能。

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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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