iOS 6 By Tutorials ---第一章--【第一彈】-【翻譯】

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iOS 6 By Tutorials(pdf 文檔)  By the raywenderlich.com Tutorial Team  備忘：本人沒有怎麼翻譯過技術型的文章，慢慢翻之。---這本書總共是27章， Chapter 1:Introduction  --第一章：入門介紹

iOS 6 introduces an abundance of great new APIs and technologies that all iOS developers should learn – from Auto Layout, to Collection Views, to Passbook, to the new literal syntax that makes code so much more compact – and that’s just the start! In fact, there’s so much new stuff that learning it all via the official API docs can be time-consuming and difficult – especially when you have other responsibilities beckoning. 

iOS6 引入了大量的新的api和技術，需要所有的iOS開發人員學習-從自動布局，到collectionView、passwork(這是一款可以存放登機證、會員卡和電影票的工具)、新的字面量，這些技術是代碼更簡潔，並且這僅僅知識開始！實際上，通過官方的api文檔學習這些新技術是非常耗時和困難的，尤其是當你還有其他的事情要做。

This is where iOS 6 by Tutorials comes to the rescue! In this book, you will be able to learn these new topics in a much more efficient way – by building real apps through fun and easy-to-read tutorials! 

這就是這本書要做的！在這本書中，你將會用更有效方式學會這些新技術--通過又去簡單的教程 建立真正的項目。

And when it comes to tutorials, you’re in the right place. The tutorials in this book guide you from being an iOS 6 API beginner to a master. You’ll go far beyond the mere surface of a subject and will dive in deep – you’ll find material here you simply won’t find anywhere else. Through hands-on practice you’ll gain the knowledge you need to apply these new APIs in your apps – and you’ll have a ton of fun along the way! 

當開始這個教程的時候，你應該在正確的地方。這本書的教程將會協助你從一個iOS6 API的新手到精通。你將會深刻的理解這些技術而不是表面理解--你將會在這裡發現其他地方沒有的例子。你需要在你的應用中使用這些新的APIs，通過實踐獲得這些知識，在這個過程中你會得到很多快樂。

The raywenderlich.com Tutorial Team and I have been excited about iOS 6 from the very first day it was announced at WWDC. We hit the ground running, taking a “divide and conquer” approach where we each selected just a few topics to pursue with intense focus. This allowed each of us to spend our energy concentrating on a small set of topics in detail, rather than spreading our research too thin and tiring ourselves out in the process. 

The raywenderlich.com團隊和我在WWDC大會上宣布iOS6的第一天起就十分興奮。我們立即快馬加鞭地開始，採用了“分而治之”的方法,我們每個人選擇不同的方面深入研究。這需要我們每個人花費大量的精力在一個方面的研究上，而不是研究的很寬，但深度不夠並且還讓自己很累！

 In the end, this is a huge benefit for YOU – you’ll be able to learn these new APIs and technologies from someone who’s really spent a lot of time digging into it, in an easy and fun way. You’ll learn the material in a fraction of the time it took us, and avoid much of the learning curve and common mistakes. 

 最後，這對你將是一個巨大的好處-你將會在那些真正花費了大量時間深入研究這些新的APIs和技術的人那學習，這將會是一個簡單有趣的方法。在我們這裡，你可以花費較少的時間並且避免走一些彎路。

So get ready for your personal tour through the amazing new features of iOS 6! By the time you are done, your iOS knowledge will be completely up-to-date, and you’ll be ready to add this exciting, spanking-new functionality to your own apps.

Sit back, relax, and prepare for some fun and informative tutorials! 

 所以，準備開始你的探索iOS6新特徵之旅吧！當你學完的時候，你的iOS的技術將會是最新的，你就可以在你的項目用添加這些令人激動的、嶄新的功能。

坐下來，放輕鬆，準備開始有趣和翔實的教程吧！

Who this book is for

This book is for intermediate or advanced iOS developers, who already know the basics of iOS development but want to upgrade their skills for iOS 6.

If you’re a complete beginner, you can follow along with this book as well, because the tutorials always walk you through in a step-by-step manner. But there may be some missing gaps in your knowledge. To fill in these gaps, you might want to go through the iOS Apprentice series available through the raywenderlich.com store. 

 這本書是為誰準備的？

這本書是為中級或進階iOS開發人員，他們已經知道iOS開發的基礎但是想要提升自己的iOS6的技能。

如果你是一個新手，你也可以跟隨這本書，因為這本書是循序漸進的。但是你的知識可能會有一些殘缺。為了彌補這些不足，你可以通過raywenderlich.com商店學習iOS學徒系列的技術。

iOS 5 by Tutorials

Last year, the Tutorial Team came out with its first book, iOS 5 by Tutorials. The book was a great success, hence the writing of this book – effectively its sequel.

Note that iOS 5 by Tutorials and iOS 6 by Tutorials are completely different books, with completely different content.

iOS 5 by Tutorials covers the new APIs introduced in iOS 5, and similarly iOS 6 by Tutorials covers the new APIs introduced in iOS 6. There are so many new APIs introduced with each version of iOS, that each release warrants an entirely new book with unique chapters.

iOS 5 by Tutorials is not required reading for this book, although if you haven’t mastered the new APIs introduced in iOS 5 (like Storyboards, ARC, or Core Image), reading it would definitely help. In many respects, this book picks up in knowledge where the other book left off. 

 iOS5 教程

去年，本教程團隊出版了第一本書，iOS教程。這本書獲得了巨大的成功，因此，這本書的編寫相當於iOS5教程的續集。

注意：iOS5教程和iOS6教程是兩個完全不同的書籍，內容完全不同。

iOS 5的教程涵蓋了iOS 5中引入的新api,類似的iOS 6教程涵蓋了iOS 6中引入的新api。每個版本的iOS都有新的APIs引入，每次發行都是一本新書的認證。

雖然閱讀它會有一定的協助，你也沒有掌握iOS5引入的新的APIs（Storyboards，ARC，CoreImage）,但是你並不需要iOS5教程這本書。 在許多方面，這本書裡的知識是其他的書中沒有涉及到或是不要的！

 How to use this book

This is the biggest book we’ve ever written – currently at over 1,200 pages and counting! It’s the equivalent of two or more average books in terms of page count – making this book a great value, packed with content.

This book is large because we wanted to provide you with the most detailed information possible on these topics, so that you really understand how to use these APIs in your own apps. However, we realize everyone has busy schedules, and it is unlikely most readers will have time to read this entire massive tome cover-to-cover.

As such, we suggest a pragmatic approach – pick and choose the subjects that interest you the most, or the ones you need for your projects, and jump directly to  those chapters. Most chapters are self-contained, so there will not be a problem if

 you go through them in non-sequential order.

Looking for some recommendations of important chapters to start with? Here’s our suggested Core Reading List:

• Chapter 2, “Programming in Modern Objective-C”

• Chapter 3, “Beginning Auto Layout”
• Chapter 5, “Beginning UICollectionView”
• Chapter 7, “Beginning Passbook”

That covers the “Big 4” topics of iOS 6, and from there you can dig into other topicsthat are particularly interesting to you. 

如何使用這本書

這是目前我們寫的最大的一本書--目前是1200多頁！相當於至少兩本普通書籍的頁數，這也使得這本書價值大，內容多。

這本書大的原因是，每個知識點我們都想提供最詳細的資訊，這樣你可以在你的項目中真正使用這些APIs。但是，我們發現每個人都很忙，對於大多數讀者來說沒有時間一章一章讀完。

所以我們有一個實際的建議-選擇你最感興趣或是你的項目中需要的技術，直接跳到這些章節。大多數的章節都是獨立的，所以你不是按順序閱讀也不會有影響。

尋找先開始那些重要的章節建議？下面是我們建議的核心閱讀的列表：

•第二章：“現代OC編程”

•第三章 ”開始自動布局“

•第五章 "開始CollectionView"

•第七章 "開始Passbook"

這涵蓋了iOS 6的“四大”的主題，並且從這些你可以鑽研其他你感興趣的技術。

iOS 6 By Tutorials ---第一章--【第一彈】-【翻譯】