On the SwiftUI side, you might go digging in these docs for Previews, which are one of its biggest selling points:
https://developer.apple.com/documentation/swiftui/previewsTake 30 seconds to read through that and the linked pages (that's all the time it will take) and see if you could figure out how to use a PreviewDevice to make your preview show a particular device.
It will tell you all the ways to initialize a PreviewDevice struct (from many different varieties of String), but you'll have no fucking idea what to do with that object.
And here's an actual code sample, via Paul Hudson:
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
Group {
ContentView()
.previewDevice(PreviewDevice(rawValue: "iPhone SE"))
.previewDisplayName("iPhone SE")
ContentView()
.previewDevice(PreviewDevice(rawValue: "iPhone XS Max"))
.previewDisplayName("iPhone XS Max")
}
}
}
It turns out what you need to do is pass the PreviewDevice instance into a previewDevice modifier that you've applied to your view inside a struct adhering to the PreviewProvider protocol. I don't think this docs page even mentions that the previewDevice modifier
exists, let alone how to put any of these pieces together to configure and display a preview.
You can find how to do this in tutorials elsewhere on Apple's site. But you can't find it in their documentation for Previews, because it's a bunch of automatically generated pages of function signatures with no explanation.