Table Of Content

Covers Swift 4, Xcode 9, and iOS 11 Craig Grummitt M A N N I N G Devices, orientation, and multitasking modes for iOS size classes Horizontal (width) Compact Regular iPhone 4S, 5, 6, 7, 8, iPhone 6 Plus, 7 Plus, SE landscape 8 Plus landscape ct a p m o C iPhone portrait iPad portrait/landscape ht) g ei h al ( c erti iPad landscape: iPad landscape: V split-view secondary app/ split-view primary app slide-over ar ul g e R iPad portrait: iPad landscape: split-view/slide-over side-by-side Licensed to john catao <[email protected]> iOS Development with Swift Licensed to john catao <[email protected]> ii Licensed to john catao <[email protected]> iOS Development with Swift CRAIG GRUMMITT MANNING SHELTER ISLAND Licensed to john catao <[email protected]> For online information and ordering of this and other Manning books, please visit www.manning.com. The publisher offers discounts on this book when ordered in quantity. For more information, please contact Special Sales Department Manning Publications Co. 20 Baldwin Road PO Box 761 Shelter Island, NY 11964 Email: [email protected] ©2018 by Manning Publications Co. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by means electronic, mechanical, photocopying, or otherwise, without prior written permission of the publisher. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in the book, and Manning Publications was aware of a trademark claim, the designations have been printed in initial caps or all caps. Recognizing the importance of preserving what has been written, it is Manning’s policy to have the books we publish printed on acid-free paper, and we exert our best efforts to that end. Recognizing also our responsibility to conserve the resources of our planet, Manning books are printed on paper that is at least 15 percent recycled and processed without the use of elemental chlorine. Manning Publications Co. Development editor: Helen Stergius 20 Baldwin Road Review editor: Aleksandar Dragosavljevic´ PO Box 761 Technical development editor: Doug Sparling Shelter Island, NY 11964 Project editor: Kevin Sullivan Copyeditor: Katie Petito Proofreader: Katie Tennant Technical proofreader: Doug Warren Typesetter and cover design: Marija Tudor ISBN 9781617294075 Printed in the United States of America 1 2 3 4 5 6 7 8 9 10 – EBM – 22 21 20 19 18 17 Licensed to john catao <[email protected]> brief contents PART 1 INTRODUCING XCODE AND SWIFT ................................... 1 1 ■ Your first iOS application 3 2 ■ Introduction to Swift playgrounds 29 3 ■ Swift objects 55 PART 2 BUILDING YOUR INTERFACE .......................................... 81 4 ■ View controllers, views, and outlets 83 5 ■ User interaction 105 6 ■ Adaptive layout 133 7 ■ More adaptive layout 167 8 ■ Keyboard notifications, animation, and scrolling 199 PART 3 BUILDING YOUR APP ................................................... 225 9 ■ Tables and navigation 227 10 ■ Collections, searching, sorting, and tab bars 263 11 ■ Local data persistence 297 12 ■ Data persistence in iCloud 337 13 ■ Graphics and media 371 14 ■ Networking 409 15 ■ Debugging and testing 439 v Licensed to john catao <[email protected]> vi BRIEF CONTENTS PART 4 FINALIZING YOUR APP ................................................. 479 16 ■ Distributing your app 481 17 ■ What’s next? 513 Licensed to john catao <[email protected]> contents preface xv acknowledgments xviii about this book xix about the author xxiii about the cover illustration xxiv PART 1 INTRODUCING XCODE AND SWIFT .................... 1 1 Your first iOS application 3 1.1 Exploring iOS SDK 3 1.2 Creating an Xcode project 5 Templates 6 ■ Project options 9 1.3 Exploring the Xcode interface 10 Toolbar area 11 ■ Utility area 12 ■ Navigator area 12 Editor area 13 ■ Debug area 15 1.4 Editing your app’s interface 15 Storyboards and nibs 15 ■ View controllers and views 16 Interface Builder 16 ■ Object Library 17 ■ Document Outline 18 ■ Inspectors 19 1.5 Running your app 22 Running your app on a device 22 ■ Running your app in the simulator 22 ■ Running your app 23 ■ Simulator features 23 vii Licensed to john catao <[email protected]> viii CONTENTS 1.6 Peeking at a completed app 24 Checking out a repository in Xcode 24 ■ Peeking at the completed app’s storyboard 24 ■ Tweaking the code 25 1.7 Summary 26 2 Introduction to Swift playgrounds 29 2.1 Xcode playground 30 Results sidebar 31 ■ Automatic compiling 32 Console 32 2.2 Type safety and type inference 33 Converting numeric types 35 ■ Concatenating strings 36 2.3 Collections 36 Arrays 36 ■ Sets 37 ■ Dictionaries 38 2.4 Control Flow 38 for-in 39 ■ switch statement 40 2.5 Functions 41 Modifying external parameter names 41 ■ Omitting external parameter names 42 ■ Default parameter names 42 2.6 Optionals 42 Declaring an optional 44 ■ Unwrapping an optional 44 Optional chaining 48 ■ Final comments on optionals 49 2.7 Tuples 49 Tuples as return values 50 ■ Tuple magic 50 2.8 Higher-order functions 51 map 51 ■ Closures 52 ■ filter 53 ■ reduce 53 sorted 54 2.9 Summary 54 3 Swift objects 55 3.1 Classes 56 Defining a class 56 ■ Properties 57 ■ Initializers 58 Methods 59 ■ Computed properties 63 ■ Class inheritance 65 Protocols 68 3.2 Structures 71 Structures vs. classes 72 Licensed to john catao <[email protected]>