Writing
The public notebook: Swift, iOS, Flutter, and a long trail of “I will definitely remember this.”
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Making a simple toggle button with UIButton
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…
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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…
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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…
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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…
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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 –…
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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…
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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…
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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…
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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…
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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:…