Cannot find type SwiftUI 'Color' in scope

Question

I added an extension to UIColor with a quick conversion function to SwiftUI's Color. It's very simple:

import Foundation
import SwiftUI
import UIKit

@available(iOS 13, macOS 10.15, *)
public extension UIColor {
    
    /// Converts the platform specific color object to a swiftUI color struct. 
    /// - Returns: Equivalent SwiftUI color
    func psoColor() -> Color {
        return Color(self)
    }
}

The compiler raises an error in release mode: 'Cannot find type 'Color' in scope'. But when compiling in debug mode I don't get that error.

The framework where it resides was originally developed in obj-c but I have been adding Swift clases with no problems since Swift 3. I'm currently using Swift 5.3 with Xcode 12.0. The deployment target is set to iOS 10.0 that's why I added the @available decorator.

I have no idea how to debug this, any help is greatly appreciate it.

user_14504866 · Answer

By adding import UIkit your problem will resolve in swift 5

user_433950 · Answer

Problem is with architecture, swiftUI is not available for armv7. When building in release mode, it included arm64 and armv7.

Reference: SwiftUI - “Use of undeclared type xxx” on deployment targets below or equal to iOS 10

Cannot find type SwiftUI 'Color' in scope

2 Answers