CrystalThemeType

public protocol CrystalThemeType

Represent a theme type.

// A concrete theme type.
struct AppTheme: CrystalThemeType {
    var textColor: UIColor?

    static var light: AppTheme {
        return AppTheme(textColor: .blue)
    }

    public static var entry: CrystalThemeType {
        return Self.light
    }
}

Conform to this protocol to make your concrete theme type. You should only create one concrete theme type to satisfy Crystal, otherwise some inconsistent errors may occur.

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  • The theme that Crystal applies to your app when the app launches.

    In practice, this property should represent the user’s preferred theme. Crystal applies this theme to the app when the app launches. If you want to apply a different theme to the app later, assign the theme to Crystal.shared.theme property or call Crystal.shared.setTheme(_:animated:) method.

    Declaration

    Swift

    static var entry: CrystalThemeType { get }
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