Kevin McNeish is author of the new book “Learn to Code in Swift” as well as the “iOS App Development for Non-Programmers” book series (www.iOSAppsForNonProgrammers.com), winner of the Publishing Innovation Award. Kevin is also an award-winning app developer, software architect, and conference speaker in the U.S. and abroad. He has spent much of his career making difficult concepts easy to understand. Follow Kevin on Twitter: @kjmcneish.
By Kevin McNeish
Access Control is one of the late-breaking features added to the Swift language. It allows you to specify the parts of your code you want to make public, and the parts you want to hide. It's an important tool in creating easy-to-use, and easy-to-understand interfaces.
By Kevin McNeish
In this second part of my two-part post on Demystifying Swift's Initializers, I explain the concepts of initializer chaining, two-phase initialization, and initializer inheritance using hands-on examples that walk you through some of these deeper concepts. You can read part 1 of this post at this link.
If you would like to follow along and perform the step-by-step instructions with this post (highly recommended) you can download the project we have completed so far at this link.
By Kevin McNeish
Now that Apple has officially released Xcode 6 and the NDA has been lifted, it's time to dive deeper into Swift—Apple's new language for building iOS apps. Learning how to properly use initializers in Swift can be daunting at first. Swift's requirement that all stored properties in a class are initialized adds complexity to the initialization process. In the first part of this two-part post I'm going to demystify initializers as I provide a hands-on approach to learning how to best implement initializers in your custom classes.
By Kevin McNeish
The Swift programming language has a new feature called optionals that were not previously available in Objective-C. They are similar to optional types in Java and nullable types in the C# programming language.
By Kevin McNeish
As promised, here is my first installment on learning to program in the new Swift language!
The following code shows an example of a Swift class definition:
To declare a class in Swift, you use the class keyword followed by the name of the class. If it has a superclass, you add a colon and the name of the superclass. The beginning and end of the class are indicated by the opening and closing curly braces.
By Kevin McNeish
Over the years I have literally taught tens of thousands of people how to write code in Objective-C through training classes, conferences, online forums, and my book series. Based on the mountain of feedback I have received, I can tell you some key points that make Swift much easier to learn than Objective-C.
If Objective-C is the only language you have ever coded in, I have one thing to say about moving to Swift. Welcome to the 21st century.
By Kevin McNeish
Apple, notorious for its secrecy, has loosened up its restrictive NDA (Non-Disclosure Agreement) for the beta versions of iOS 8, OS X, and Xcode 6. In the latest version of the iOS Developer Program License Agreement, they have added the following statement in the Confidentiality section under the topic 10.1 Information Deemed Apple Confidential:
By Kevin McNeish
When Tim Cook opened up by saying that iOS 8 accompanies the biggest release of the Apple SDK since the launch of the App Store, I thought it might just be hyperbole. It wasn't. There are tremendous changes in store for iOS app developers that will drastically change the way you create apps. I'll start with the biggest change first.
By Kevin McNeish
Do you have an idea for an app but lack the programming knowledge to begin building it? In this weekly blog series, I will take you, the beginner app developer, step by step through the process of creating apps for the iPhone, iPod touch, and iPad. Join me each week on this adventure and you will experience how much fun turning your app ideas into reality can be! This is part 41 of the series. If you are just getting started, check out the beginning of the series at this link.
These days, more and more iOS apps offer users the option of logging in with Facebook. If you want your app to go viral, this is a great first step. In fact, 80 percent of the top-grossing iOS apps use social media logins. As stated in the Facebook documentation:
By Kevin McNeish
Do you have an idea for an app but lack the programming knowledge to begin building it? In this weekly blog series, I will take you, the beginner app developer, step by step through the process of creating apps for the iPhone, iPod touch, and iPad. Join me each week on this adventure and you will experience how much fun turning your app ideas into reality can be! This is part 40 of the series. If you are just getting started, check out the beginning of the series here.
One of the hottest technologies to come out of iOS 7 is iBeacon. In case you haven't heard, iBeacon is Apple's trademark for what it calls "a new class of low-powered, low-cost transmitters that can notify nearby iOS 7 devices of their presence." This new technology solves one of the biggest problems with Location Services on iOS devices—pinpointing the location of a device when it's indoors. Unlike GPS technology that determines a device's absolute location in terms of latitude and longitude, the iBeacon technology measures a device's relative distance to an iBeacon in an established location. Since iBeacons work without the need for a WiFi or cellular connection, it makes them ideal for indoor use.
