Swift 在SwitUI中显示UIImage为深色-Apple Watch

我不明白为什么汽车systemName图像没有出现在Apple Watch模拟器上。（它是黑色的）

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（屏幕完全是黑色的，就像没有向视图添加任何内容一样）

我想应该是这样的

struct ContentView: View {
    var body: some View {
        Image(systemName: "car") // < Native SwiftUI
    }
}

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一个解决方案是将UIImage颜色设置为白色，这样它将是可见的

Image(uiImage: UIImage(systemName: "car")!.maskWithColor(color: .white)!)

maskWithColor来自哪里

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@FirsfNameLastname出于好奇，为什么是UIImage？要在UIKit目标上共享？

Image(uiImage: UIImage(systemName: "car")!).colorInvert()

Image(uiImage: UIImage(systemName: "car")!.maskWithColor(color: .white)!)

extension UIImage {

    func maskWithColor(color: UIColor) -> UIImage? {
        let maskImage = cgImage!

        let width = size.width
        let height = size.height
        let bounds = CGRect(x: 0, y: 0, width: width, height: height)

        let colorSpace = CGColorSpaceCreateDeviceRGB()
        let bitmapInfo = CGBitmapInfo(rawValue: CGImageAlphaInfo.premultipliedLast.rawValue)
        let context = CGContext(data: nil, width: Int(width), height: Int(height), bitsPerComponent: 8, bytesPerRow: 0, space: colorSpace, bitmapInfo: bitmapInfo.rawValue)!

        context.clip(to: bounds, mask: maskImage)
        context.setFillColor(color.cgColor)
        context.fill(bounds)

        if let cgImage = context.makeImage() {
            let coloredImage = UIImage(cgImage: cgImage)
            return coloredImage
        } else {
            return nil
        }
    }

}