It’s actually pretty straightforward to turn a UIButton into a toggle button. (checkbox, switch, whatever you prefer to call it!) We can make use of the isSelected property that UIButton inherits from UIControl. All we need to do is connect…
Blog Archives
Tiling a background image – sans code!
I recently wrote an article on a simple custom UIView class you can use to tile an image. Unfortunately – this doesn’t help us in a LaunchScreen, where custom classes are not allowed. Fortunately – there’s another way to tile…
Tiled background image in custom UIView class
Sometimes you need a repeated or tiled image in your app, often for a background. Something like these rain-drops for example: Here’s a simple UIView subclass that accepts an image parameter, and renders a repeated tiled image, even in the…
Presentation Style default in iOS 13
This week is International Week of the Deaf, so to thank the community that have been a big part of my app Subtitles Viewer‘s success, Subtitles Viewer PRO is free for the whole week. Coincidentally, and perhaps unfortunately, iOS 13 is…
Property Wrappers and User Defaults
I love magical new features that help us abstract away boiler-plate code and let us focus on the unique features of our apps. Property wrappers is such a feature, and seriously – it just feels like magic! Let’s take a…
SF Symbols in iOS 13
I was playing with the amazing SwiftUI with Apple’s tutorials (stay tuned, I hope to write something on SwiftUI soon) when I noticed something interesting: Where does this “star.fill” come from, I wondered… There’s no “star.fill” in the asset catalog?!…
Swift 5 – it’s alive!
It’s been a couple of weeks now since Swift 5 has arrived, with a bunch of features, such as: ABI stability source compatibility isMultiple – a fancy technique for checking if a number is a multiple of another number. Dictionary…
Optionals in Swift explained – with a cat in a box!
If you’ve come to Swift from a language that doesn’t use optionals, you might find the concept a little strange and the syntax unfamiliar at first. Sometimes it helps to learn the unfamiliar with something familiar – in my lightning tour…
Get a continent from longitude-latitude
For a project I’m working on I needed to know if a point (latitude,longitude) was in a continent, and if so, which one! To do this, first I set up a Continent enum to work with, making it a String…
Getting the keyboard height
Some time ago I answered a question in StackOverflow comparing the keyboard height on the iPhone X and the iPhone 8: I got these heights by: 1. Adding an observer of the UIResponder.keyboardWillShowNotification notification: (In fact, if we want all keyboard frame…
