iOS Apprentice
Matthijs Hollemans
Copyright ©2016 Razeware LLC.
Notice of Rights
All rights reserved. No part of this book or corresponding materials (such as text,
images, or source code) may be reproduced or distributed by any means without
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Notice of Liability
This book and all corresponding materials (such as source code) are provided on an
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limited to the warranties of merchantability, fitness for a particular purpose, and
noninfringement. In no event shall the authors or copyright holders be liable for any
claim, damages or other liability, whether in action of contract, tort or otherwise,
arising from, out of or in connection with the software or the use of other dealing in
the software.
Trademarks
All trademarks and registered trademarks appearing in this book are the property of
their own respective owners.
License
By purchasing iOS Apprentice, you have the following license:
• You are allowed to use and/or modify the source code in iOS Apprentice in as
many apps as you want, with no attribution required.
• You are allowed to use and/or modify all art, images and designs that are
included in iOS Apprentice in as many apps as you want, but must include this
attribution line somewhere inside your app: “Artwork/images/designs: from iOS
Apprentice book, available at www.raywenderlich.com”.
• The source code included in iOS Apprentice is for your personal use only. You are
NOT allowed to distribute or sell the source code in iOS Apprentice without prior
authorization.
• This book is for your personal use only. You are NOT allowed to sell this book
without prior authorization, or distribute it to friends, coworkers or students;
they would need to purchase their own copies.
iOS Apprentice
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About the author
Matthijs Hollemans is a mystic who lives at the top of a mountain
where he spends all of his days and nights coding up awesome
apps. Actually he lives below sea level in the Netherlands and is
pretty down-to-earth but he does spend too much time in Xcode.
Check out his website at www.matthijshollemans.com.
About the cover
Striped dolphins live to about 55-60 years of age, can travel in pods numbering in
the thousands and can dive to depths of 700 m to feed on fish, cephalopods and
crustaceans. Baby dolphins don't sleep for a full a month after they’re born. That
puts two or three sleepless nights spent debugging code into perspective, doesn't
it? :]
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Table of Contents: Extended
Tutorial 1: Getting Started 6.......................................................
The language of the computer 13........................................................................................
The Bull’s Eye game 16...........................................................................................................
The one-button app 18...........................................................................................................
How does an app work? 36..................................................................................................
Working our way down the to-do list 38............................................................................
Objects, data and methods 42.............................................................................................
Adding the rest of the controls 45........................................................................................
Enough playing around… let’s make a game! 56.............................................................
Calculating the score 72.........................................................................................................
Polishing the game 85.............................................................................................................
Adding the About screen 95..................................................................................................
Making it look good 104.......................................................................................................
Running the game on your device 144................................................................................
The end… or the beginning? 150........................................................................................
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1
Tutorial 1: Getting Started
By Matthijs Hollemans
Hi! I am Matthijs Hollemans, a full-time iOS developer and tutorial team member at
www.raywenderlich.com.
You’re about to read the first tutorial from my book The iOS Apprentice: Beginning
iOS Development with Swift, Fifth Edition.
In this book you will learn how to make your own iPhone and iPad apps with Apple’s
Swift 3.0 programming language, through a series of four epic-length hands-on
tutorials.
The apps you’ll be making in The iOS Apprentice
Everybody likes games, so you’ll start with building a simple but fun iPhone game
named Bull’s Eye. It will teach you the basics of iPhone programming, and the other
tutorials will build on what you learn there.
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