Hi, this is my code : import SwiftUI struct ColorManager { // create static variables for custom colors static let spotifyGreen = Color("SpotifyGreen") //... add the rest of your colors here} // Or you can use an extension// this will allow you to just type .spotifyGreen and you wont have to use ColorManager.spotifyGreenextension Color { static let spotifyGreen = Color("SpotifyGreen") // ... add the rest of your colors here}

Yes it is,

I can't save the color there next to the appicon in the small color square with the white color, while I set the color(any) to the large Universal squares.

One large window underneath is gray and has a warning on it: not assigned. On the other large squares I have marked the color(whatever).

How can I assign color settings to unassigned children so that the custom colors are visible in the app in the font background and foreground ?

Xcode version is 12.3 swift 5. I'm sure I chose the color as you write. Maybe it needs to type the right command in the terminal ? I named the color and selected the color in color settings, but it doesn't want to color with this color the little square next to appicon color(color name) is still white.

I probably need to assign a color name with swift code 5. The color in the little square next to the appicon is already there.

I solved the problem, thank you.

I am giving up on notifications, instead I would like to remove the code error: cannot use instance member 'number' within property initializer; property initializers run before 'self' is available from code: let number = "same number" let absolute = abs(number)

At first I want to check without code if it works. after removing this error it should work on a blank screen.

Defining struct alone did not help, the error still occurs.

Again, the error appears : Closure containing a declaration cannot be used with result builder 'ViewBuilder' : struct ContentView_Previews: PreviewProvider { // <- error Closure containing a declaration cannot be used with result builder 'ViewBuilder' and  Struct 'ViewBuilder' declared here (SwiftUI.ViewBuilder)     static var previews: some View {         ContentView()     } }     static var previews: some View {         ContentView()     }        }

After correcting the error, this error appeared: Cannot find '$contentData' in scope

Can you give me an example of an argument ?

The body is already defined,