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 window we will open: In your App add another WindowGroup Read more…
Update 30/6/2022: I realised we shouldn’t be initing NSPredicate objects inside body so need a new approach. I was reading Paul Hudson’s article Dynamically filtering @FetchRequest with SwiftUI and thought I would share an improvement for declaring the singers @FetchRequest property that supports a dynamic predicate for filtering: FilteredList.swift ContentView.swift
If we want to use @AppStorage but with a dynamic key passed to the View we can do this: DynamicKeyApp.swift ContentView.swift
Here is one way to implement @AppStorage using a custom UserDefaults suite by way of the defaultAppStorage View modifier and a class extension. GroupDefaultsTestApp.swift ContentView.swift