iOS开发实战(2012.11)：BearCahill详解

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"iOS.in.Practice(2012.11) - 一本2012年11月出版的iOS开发教程，内容覆盖了iOS 6系统，由Bear Cahill撰写，Manning出版社发行。" 这篇教程《iOS in Practice》是针对2012年11月时的iOS开发环境，特别是iOS 6这一操作系统版本。在这个时期，iOS平台正在迅速发展，iOS 6带来了许多新的特性和改进，如Maps应用的更新、Passbook功能的引入以及Siri的增强等。作者Bear Cahill是一位经验丰富的iOS开发者，他在这本书中分享了98种不同的技术技巧，涵盖了iOS开发的各个方面。这些技术可能包括界面设计、编程实践、性能优化、内存管理、多线程处理、网络通信、数据持久化、以及如何利用Apple的开发工具如Xcode进行高效开发。书中详细讲解了如何利用Objective-C（当时的主要开发语言）来构建高质量的iOS应用程序，同时也可能涉及Swift的早期版本，因为Swift是在2014年首次公开发布。读者可以学习到如何创建用户友好的界面，使用UIKit框架，以及如何与Core Data框架交互来存储和检索数据。此外，这本书也可能探讨了App Store的提交流程，包括应用的测试、审核策略和发布策略。对于开发者来说，理解这些过程至关重要，因为它们直接影响到应用能否成功上架并被用户发现。在实际开发中，这本书可能还包含了错误处理、性能分析和调试技巧，这些都是开发者在解决复杂问题时不可或缺的技能。同时，为了确保应用程序能在不同设备和操作系统版本上运行良好，书中可能还讨论了设备兼容性和版本适配策略。最后，由于出版时iOS生态系统的版权和商标规定，书中的例子和代码会尊重并遵循所有相关法律，对制造商和卖家的商标标识进行恰当处理，以避免侵权。《iOS in Practice》是一本全面而深入的教程，适合初学者和有经验的iOS开发者，帮助他们掌握和应用2012年时最前沿的iOS开发技术和最佳实践。

preface

My professional coding career has gone from large to small in a variety of ways. I

started on 3279 terminals at

IBM

, and with each professional move (from Ericsson to

Travelocity and others) I went to smaller machines and smaller companies. Now I

work on computers you can fit in your pocket and at a company of one: me.

When I first started working in mobile development, I used

J2ME

on various

phones, including Blackberries. When I got the chance to work on an iPhone, I pur-

chased my first MacBook and loved it! It wasn’t until sometime later that I realized that

I had gotten in at the beginning of the mobile wave. Solving problems alone, and often

under non-disclosure agreements, I learned a lot, and as each new version of the

came out, it got easier and better. The platform quickly became more sophisticated,

and so did the user.

Then Manning approached me to talk about a book on i

development, and I

was surprised how clear and formed my opinions were about what should be included.

I had learned a lot on my own—from frameworks to widgets to the

MVC

and

more—and I felt that emphasis was often placed on the wrong areas. I also felt that

the sample code provided by Apple was underemphasized. I believe that project-based

learning is the best—at least it is for me—and seeing how the different parts of a proj-

ect come together is not only useful but necessary to make sense of the project and

put it into context.

I was flattered that Manning asked me to write this book and I hope it will help you

to learn i

development—and to put it into practice.

ABOUT

THIS

BOOK

xviii

Roadmap

Part 1 covers the groundwork needed to get started in iOS development. In chapter 1,

you’ll get to develop your first Hello World app, but we’ll also cover some of the core

areas and concepts of iOS development. Chapter 2 covers the development environ-

ment, including Xcode for editing the code and user interface along with other con-

cepts and tools.

Chapter 3 begins part 2 with your first real app project: PicDecor. In this chapter

you’ll learn about view controllers and displaying images as well as how to interface

with sending email. You’ll see how to design the

, and how to connect it to the code

you’re writing.

Chapter 4 builds on what you learned in chapter 3 about view controllers by show-

ing you table view controllers and how to access the address book.

Chapter 5 continues with access to images through the photo album and the cam-

era and how to manipulate those images. Also, in chapter 5 you’ll see how to display a

map and the user’s location and store data for later retrieval and display.

The Settings Bundle is the official way to have a user manage app settings and is

covered in chapter 6. Also covered are playing MP3s and detecting motion (particu-

larly shaking) of the device. Chapter 7 goes further in playing audio, allowing the user

to make playlists and play them via the iPad framework. This includes covering Core-

Data for database design and for storing app data.

Push notifications and in-app purchase both use external server interaction for

their functionality and are covered in chapter 8 for our Rock, Paper, Scissors game.

Chapter 9 continues the game with GameCenter interaction including leaderboards

and achievements.

Chapter 10 could be called the “iChapter” as it covers using the iTunes

API

search music, designing for the iPad, and advertising using iAds.

Finally, chapter 11 covers the more recent additions to iOS. Specifically, it covers

the collection view, Social Framework, reminders, and

state restoration.

Code conventions

There are many Objective-C code examples in this book edited with Xcode. Source

code in listings and text is in a

fixed-width

font

this

to separate it from ordi-

nary text.

Writing code for a book is challenging compared with writing code that isn’t going

to be published for the world to see. Restrictions on line length, readability, and con-

ciseness encouraged decisions I might not have made otherwise. You will find that I

may have added a method to a class that might not make the most sense, or named

some variables in less-than-perfect ways. Please concentrate on the content over form

in those cases.

As all aspects of mobile, websites, documentation, tools, and so on change regu-

larly, some images in the book may not match what you see online and elsewhere.

However, the concepts are likely to remain, and the variance you might see shouldn’t

cause confusion.

ABOUT

THIS

BOOK

xix

Source code downloads

You will need a few things to benefit from the information presented in this book,

starting with an Apple computer. Then you will need to download Xcode and the

accompanying documentation, including public/open source libraries, as well as the

source code for the examples in the book. The chapters will then direct you on what

to do, one step at a time.

You will find the source code for the working examples in this book available for

download from the publisher’s website at www.manning.com/iOSinPractice.

You can also find some of the apps developed in this book in the Apple App Store.

About the title

The title of this book communicates its two core aspects—it covers i

development

both in general and in practice. Learning happens best through examples and exer-

cises‚ as opposed to learning about theories or concepts in isolation. So I’ve included

numerous hands-on techniques and examples to get you started in i

development.

About the author

Bear Cahill has worked in i

development at Brainwash Inc. since 2008 and through

the development of several dozen apps. Prior to that, Bear worked at

IBM

, Ericsson,

and Travelocity, among other companies.

From

REXX

BASIC

C++

to Java to Objective-C, along with several other lan-

guages, Bear has worked on a variety of platforms and technologies. He now focuses on

independent work, using friends to handle related server, Android, and other work.

Bear enjoys spending time with his wife and two sons around downtown Denton,

Texas. He has too many hobbies past and future to list here, so we’ll just say he’s never

been sky diving, scuba diving, or stage diving. No diving allowed!

Author Online

The purchase of i

in Practice includes free access to a private forum run by Manning

Publications where you can make comments about the book, ask technical questions,

and receive help from the author and other users. You can access and subscribe to the

forum at www.manning.com/iOSinPractice. This page provides information on how

to get on the forum after you’re registered, what kind of help is available, and the

rules of conduct in the forum.

Manning’s commitment to our readers is to provide a venue where a meaningful

dialogue among individual readers and between readers and the author can take

place. It’s not a commitment to any specific amount of participation on the part of the

author, whose contribution to the book’s forum remains voluntary (and unpaid). We

suggest you try asking the author some challenging questions, lest his interest stray!

The Author Online forum and the archives of previous discussions will be accessi-

ble from the publisher’s website as long as the book is in print.

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iOS开发实战(2012.11)：BearCahill详解

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