How to programmatically get asset catalog color variants from Xcode 13 in SwiftUI / Swift5.5?

Question

I have a color asset catalog in Xcode 13 that defines a set of colors in both light ("Any") and dark ("Dark") variants. For example:

I would like to programmatically enumerate the different colors, meaning, I'd like to get the color ( Color("hkMagenta") ) in both variants. Just getting it by name returns the "Any" variant.

How can I get the dark variant?

I had thought this would work:

ColorManager.hkMagenta.environment(\.colorScheme, .dark)

Unfortunately, no-go...

Cannot convert value of type 'some View' to expected element type 'Array<Color>.ArrayLiteralElement' (aka 'Color')

Any ideas?

Answer 1

You can specify.colorScheme for each view depending upon your needs like

import SwiftUI

struct ContentView: View {
    var body: some View {
        VStack(spacing: 20){
            Text("Light Magenta color from asset")
                .font(.headline)
                .foregroundColor(Color("hkMagenta"))
                .environment(\.colorScheme, .light) //ColoScheme
            
            Text("Dark Magenta color from asset")
                .font(.headline)
                .foregroundColor(Color("hkMagenta"))
                .environment(\.colorScheme, .dark) //ColoScheme
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

Answer 2

Thanks to @Asperi for pointing out https://stackoverflow.com/a/66950858/12299030 .

TL;DR is, you can get the light and dark variants using UIColor.resolvedColor() like so:

let c = Color(UIColor(named: "hkMagenta").:resolvedColor(with: UITraitCollection(userInterfaceStyle. .dark)))