John Ray - iOS 9 Application Development in 24 Hours

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John Ray

800 East 96th Street, Indianapolis, Indiana, 46240 USA

Sams Teach Yourself iOS9 Application Development in 24 Hours

Copyright 2016 by Pearson Education, Inc.

All rights reserved. Printed in the United States of America. This publication is protected by copyright, and permission must be obtained from the publisher prior to any prohibited reproduction, storage in a retrieval system, or transmission in any form or by any means, electronic, mechanical, photocopying, recording, or likewise. For information regarding permissions, request forms, and the appropriate contacts within the Pearson Education Global Rights & Permissions Department, please visit www.pearsoned.com/permissions/. No patent liability is assumed with respect to the use of the information contained herein. Although every precaution has been taken in the preparation of this book, the publisher and author assume no responsibility for errors or omissions. Nor is any liability assumed for damages resulting from the use of the information contained herein.

ISBN-13: 978-0-672-33767-3
ISBN-10: 0-672-33767-3

Library of Congress Control Number: 2015917495
First Printing February 2016

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John Ray currently serves as the Director of the Office of Research Information Systems at The Ohio State University. He has written numerous books for Macmillan/Sams/Que, including Using TCP/IP: Special Edition, Teach Yourself Dreamweaver MX in 21 Days, Mac OS X Unleashed, My OS X El Capitan Edition, and Sams Teach Yourself iOS 8 Development in 24 Hours. As a Macintosh user since 1984, he strives to ensure that each project presents the Macintosh with the equality and depth it deserves. Even technical titles such as Using TCP/IP contain extensive information about the Macintosh and its applications and have garnered numerous positive reviews for their straightforward approach and accessibility to beginner and intermediate users.

You can visit his website at http://teachyourselfios.com or follow him on Twitter at @johnemeryray or #iOSIn24.

This book is dedicated to the stray cat living in my garage.
It appears to like the cat food I bought.

Thank you to the group at Sams PublishingLaura Norman, Keith Cline, Mark Renfrowand my Tech Editor, Anne Groves, for helping me survive another year of OS and Xcode updates. The evolution of Swift (and the Xcode tools) has been incredibly rapid, and the ride for developers is definitely a bit bumpy. The Pearson team does a great job of keeping me organized, honest, and on target.

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When you pick up an iOS device and use it, you feel connected. Whether it be an iPad, an iPhone, or an iPod, the interface acts as an extension to your fingers; it is smooth, comfortable, and invites exploration. Other competing devices offer similar features, and even sport gadgets such as wraparound screens and trackpads, but they cannot match the user experience that is iOS.

iOS and its associated development tools have changed rapidly over the past few years. iOS 7 brought us a new user interface that used depth and translucency to keep users connected to their content and aware of the context in which they are accessing it. iOS 8 surprised everyone with a brand new language for developing apps: Swift. Alongside the introduction of iOS 9, Swift became an open source language, solidifying it as the future of development on Apple platforms and beyond.