Learning SwiftUI can be tricky because it has a very different design to previous UI frameworks. Many make the mistake of trying to apply old design patterns which are not really compatible because of SwiftUI’s use of value semantics and Read more…
Seems to me some developers think that @MainActor means “always main thread” and has the same behaviour as DispatchQueue.main.async which I don’t think is try. For example, the code below outputs: Because the Database class is not marked as @MainActor Read more…
I came across an interesting Stack Overflow question about how to support List selection of different types when using NavigationSplitView when in regular width, e.g. on iPad landscape. This problem doesn’t arise with NavigationStackView because multiple ForEach can simply iterate Read more…
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 Read more…
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 Read more…
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 Read more…
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 Read more…
It’s hard to find this feature in the documentation so thought I’d share an example here.
Saw this interesting question on Stackoverflow and thought I would answer it. The trick is to use `DynamicProperty as an intermediary as follows:
Here is how to open a new window or re-activate an existing one in SwiftUI on macOS. In your ContentView create a button and open a URL for your app and another View e.g. Viewer to be shown in the Read more…