iOS Barcodes：融合数字与物理世界的高清指南

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《高清彩版Manning：条形码与iOS：将数字与物理世界融合》本书由Oliver Drobnik撰写，是Manning出版社推出的一本专著，旨在探索如何利用iOS平台将数字世界与实体世界紧密相连，通过条形码技术实现两者间的无缝互动。"Barcodes with iOS"这一主题，聚焦于移动设备上的条形码技术应用，包括但不限于产品追踪、库存管理、物联网(IoT)整合以及增强现实(AR)体验等。作者Oliver Drobnik以其丰富的经验和深入理解，带领读者了解如何设计和实现基于iOS的条形码解决方案，包括如何开发应用程序来读取、解析和生成条形码，以及如何利用这些技术提高业务效率，提升用户体验。书中不仅涵盖了基础原理和技术细节，还可能包括实际项目案例和最佳实践，帮助开发者在iOS平台上构建具有竞争力的创新应用。此外，书中还可能讨论了版权和法律问题，强调在使用条形码技术时必须遵守相关的知识产权规定，确保合规性。对于购买者，Manning出版社提供了在线购买链接和折扣信息，并提供了客户服务邮箱，以便于读者获取更多关于图书的促销信息或解决疑问。《高清彩版Manning：条形码与iOS》是一本深入浅出的指南，不仅适合iOS开发者提升其技术能力，也对那些寻求将条形码技术应用于商业场景的企业或产品经理具有很高的参考价值。通过阅读这本书，读者将能够掌握在iOS设备上利用条形码进行数据交换和交互的最新趋势和实践。

about this book

This book is intended for intermediate-level iOS developers who know their way around

Xcode and have built a few apps already. This allows me to provide instructions in a

terse, tutorial-like style, as readers of my blog, cocoanetics.com, have come to appreci-

ate. By focusing on a more experienced audience, I don’t have to waste your time with

OS development basics that are well covered in other books.

Roadmap

The topic of barcodes serves as the common thread running through the chapters of

this book, but you can dive into specific chapters to learn about particular technolo-

gies. Here’s a quick overview of what you will find in each of the chapters.

Chapter 1 introduces you to the barcode types that are natively supported starting

with i

OS 7. You’ll become a barcode guru and be able to hold your own in any conver-

sation about barcodes, their promises, and their limitations. If you like a good story,

flip to appendix A, which recounts the curious history of the mother of all barcodes:

the

UPC.

Chapter 2 gives you a solid introduction to AV Foundation media capture. You’ll

become familiar with the components of this framework, which we’ll use to build a

camera app.

Chapter 3 introduces you to the metadata detectors for scanning barcodes, build-

ing on the camera preview from chapter 2. At this point, you’ll have a reusable bar-

code scanner that you can employ in all your apps.

ABOUT THIS BOOK

xvi

Chapter 4 deals with Apple’s main reason for pushing forward with barcode sup-

port in iOS: Passbook. You’ll learn how to generate Passbook tickets with Ruby and

how to validate them in an i

OS app without the need for server infrastructure.

Chapter 5 looks at how you can generate your own barcodes for display on devices

and how you can print them to physical media via AirPrint. You’ll learn about the use

of Core Image for generating

QR Codes and BarCodeKit for all kinds of 1D barcodes.

Chapter 6 dives into retrieving metadata for scanned barcodes, in particular how

to use

NSURLSession

for creating a web service wrapper. The second half of this chap-

ter is about creating a custom

NSURLProtocol

and how to stub network requests for

unit testing without the need to call an actual server over the internet.

Chapter 7 then rounds out the book by adding contextual information about the

user who’s scanning barcodes. Core Location and iBeacons let you magically adapt

your app’s

UI to your user’s needs.

Three appendixes provide additional background and other useful information.

Code conventions and downloads

All source code in listings or in text is in a

fixed-width

font

this

to separate it

from ordinary text. Code annotations accompany many of the listings, highlighting

important concepts. In some cases, numbered bullets link to explanations that follow

the listing.

Source code for all working examples in this book is available for download from

the publisher’s website at www.manning.com/Barcodeswithi

OS.

Author Online

Purchase of Barcodes with iOS includes free access to a private web forum run by Man-

ning Publications, where you can make comments about the book, ask technical ques-

tions, and receive help from the author and from other users. To access the forum

and subscribe to it, point your web browser to www.manning.com/Barcodeswithi

OS.

This page provides information on how to get on the forum once you are registered,

what kind of help is available, and the rules of conduct on the forum.

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

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

place. It is 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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