NEW! Master Swift design patterns with my latest book! >>

< Previous: Overview   Next: Preparing for action >

Setting up

As we're just before the half-way point of this series, it's time to introduce one of the most important techniques in iOS development: animation. Sadly, many people don't consider animation important at all, which makes for some thoroughly awful user interface design.

Animation – making things move, scale, and so on – of your views is not only about making things pretty, although that's certainly a large part. Its main purpose is to give users a sense of what's changing and why, and it helps them make sense of a state change in your program.

When we use a navigation controller to show a new view controller, we don't just want it to appear. Instead, we want it to slide in, making it clear that the old screen hasn't gone away, it's just to the left of where we were.

You're almost certainly tired of hearing me say this, but iOS has a ridiculously powerful animation toolkit that's also easy to use. I know, I'm a broken record, right?

Well, don't just take my word for it – let's try out some animation together so you can see exactly how it works. You're also going to meet switch/case for the first time and learn about the CGAffineTransform struct, both of which will serve you just as well as animations. So, create a new Single View App project in Xcode, naming it Project15.

Please download the files for this project from GitHub (https://github.com/twostraws/HackingWithSwift) and copy its Content folder into your Xcode project. Finally, set it to work on landscape iPads only. Animation of course works on all devices and in all orientations, but it's easier to work with a fixed size for now.

Learn Server-Side Swift now!

Take your Swift code to the server and become a full-stack developer with my latest book: Server-Side Swift!

< Previous: Overview   Next: Preparing for action >
MASTER SWIFT NOW
Buy Practical iOS 12 Buy Pro Swift Buy Swift Design Patterns Buy Practical iOS 11 Buy Swift Coding Challenges Buy Server-Side Swift (Vapor Edition) Buy Server-Side Swift (Kitura Edition) Buy Hacking with macOS Buy Advanced iOS Volume One Buy Hacking with watchOS Buy Hacking with tvOS Buy Hacking with Swift Buy Dive Into SpriteKit Buy Swift in Sixty Seconds Buy Objective-C for Swift Developers Buy Beyond Code

Was this page useful? Let me know!

Click here to visit the Hacking with Swift store >>