The following is a code example from widget extension.
By using .environment(.colorScheme, ...), I am able to update view with correct theme aware named color.
However, I am not able to retrieve the correct RGB value, from the theme aware named color.
private func getColorScheme() -> ColorScheme {
if ... {
return ColorScheme.dark
} else {
return ColorScheme.light
}
}
@ViewBuilder
func contentView() -> some View {
// Light/ dark theme aware
let color = SwiftUI.Color("yellowNoteColor")
calculate(color)
HStack {
...
}
.background(color)
.environment(\.colorScheme, getColorScheme())
}
func calculate(_ color: SwiftUI.Color) {
var a: CGFloat = 0.0
var r: CGFloat = 0.0
var g: CGFloat = 0.0
var b: CGFloat = 0.0
let uiColor = UIColor(self)
uiColor.getRed(&r, green: &g, blue: &b, alpha: &a)
// !!! Always get the light theme color value !!!
}
Inside calculate function, the retrieved value is always in the light theme color value.
My guess is, caculate function is executed before .environment(\.colorScheme, getColorScheme()), that's why we are getting light theme color value always.
May I know, how to get correct RGB value from theme aware named color?
