Question 72282 in IOS Swift Question posted in
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SwiftUI: How can I set a color to .foregroundColor() by using a String? i.e. "green" –> Color.green – Ios swift

So I have this String "green" inside a constant (lernset.color). I would like to set a .foregroundColor() to a symbol (systemName: "folder") inside of a list, so that it has the same color as written inside the constant (lernset.color).
The problem I get: I dont know how to convert this constant (lernset.color) which has the datatype of a String into the datatype of Color.
I already tried:

  1. … .foregroundColor(Color.lernset.color)
  2. … .foregroundColor(Color.String(lernset.color))
  3. I also tried assigning the constant to a variable… but

nothing worked.

[ So normally you would type: .foregroundColor(Color.green)
But in this case I want the List to automatically adapt, so that the Color could change the way the constant (lernset.color) changes…

Thank you for your help in advance

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2

Answers


  1. 0

    Use

    Color(lernset.color)

    It only works if the String value of lernset.color is defined as a Color Set in Assets

    This

    Color.lernset.color

    or

    Color.green

    References a static variable. You would need something like

    extension Color{
    static let yourColor: Color = Color("nameHere")
}

    Then you can call

    Color.yourColor

    With "nameHere" being the name of a Color Set

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  2. 0

    If you want to use a string you can add an extension to Color :

    extension Color {
    static subscript(name: String) -> Color {
        switch name {
            case "green":
                return Color.green
            case "white":
                return Color.white
            case "black":
                return Color.black
            default:
                return Color.accentColor
        }
    }
}

    Usage :

    Color[lernset.color]
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