Malcolm Hall

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November 2022

SwiftUI

Multiple sheets in SwiftUI using subviews

If you need to show multiple sheets in SwiftUI it is best to use the framework features to your advantage. Rather than try to abstract the problem into a generic coordinator object, which you then have to unbundle again to customise each circumstance, you can simply create multiple small subview Read more…

By malhal, 6 months29th November 2022 ago
SwiftUI

Nested Property Wrappers in Swift

I designed a better way to nest property wrappers than other examples I’ve seen in this article and this Stack Overflow question. The sample below is a redesigned version of the code in the question, which I also posted as an answer. Rather than use multiple property wrappers on the Read more…

By malhal, 7 months18th November 2022 ago
SwiftUI

UITextView in a UIViewRepresentable

I’ve seen a lot of code shared online getting the Coordinator wrong so thought I’d share an example of how I believe the Coordinator should be done. makeView returning context.coordinator.textView is taken from Fruta’s PaymentButton.swift but the ideas of the lazy var and textDidChange closure are my own. This means Read more…

By malhal, 7 months17th November 2022 ago
MapKit

UIViewRepresentable with Coordinator Example

There are not many examples of correctly using a Coordinator with UIViewRepresentable so thought I would share one here. You’ll see many examples including some from Apple that return Coordinator(self) which is completely wrong because the UIViewRepresentable is a struct value type which is recreated on every state change so Read more…

By malhal, 7 months16th November 2022 ago
SwiftUI

SwiftUI List EditActions

It’s hard to find this feature in the documentation so thought I’d share an example here.

By malhal, 7 months14th November 2022 ago
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