无法将颜色设置为分段控件



我有这样的颜色"CC0000">

现在,要将这种颜色分配给我选择的片段,我首先尝试使用此扩展名。

extension UIColor {
// MARK: - Initialization
convenience init?(hex: String) {
var hexSanitized = hex.trimmingCharacters(in: .whitespacesAndNewlines)
hexSanitized = hexSanitized.replacingOccurrences(of: "#", with: "")
var rgb: UInt32 = 0
var r: CGFloat = 0.0
var g: CGFloat = 0.0
var b: CGFloat = 0.0
var a: CGFloat = 1.0
let length = hexSanitized.count
guard Scanner(string: hexSanitized).scanHexInt32(&rgb) else { return nil }
if length == 6 {
r = CGFloat((rgb & 0xFF0000) >> 16) / 255.0
g = CGFloat((rgb & 0x00FF00) >> 8) / 255.0
b = CGFloat(rgb & 0x0000FF) / 255.0
} else if length == 8 {
r = CGFloat((rgb & 0xFF000000) >> 24) / 255.0
g = CGFloat((rgb & 0x00FF0000) >> 16) / 255.0
b = CGFloat((rgb & 0x0000FF00) >> 8) / 255.0
a = CGFloat(rgb & 0x000000FF) / 255.0
} else {
return nil
}
self.init(red: r, green: g, blue: b, alpha: a)
}
// MARK: - Computed Properties
var toHex: String? {
return toHex()
}
// MARK: - From UIColor to String
func toHex(alpha: Bool = false) -> String? {
guard let components = cgColor.components, components.count >= 3 else {
return nil
}
let r = Float(components[0])
let g = Float(components[1])
let b = Float(components[2])
var a = Float(1.0)
if components.count >= 4 {
a = Float(components[3])
}
if alpha {
return String(format: "%02lX%02lX%02lX%02lX", lroundf(r * 255), lroundf(g * 255), lroundf(b * 255), lroundf(a * 255))
} else {
return String(format: "%02lX%02lX%02lX", lroundf(r * 255), lroundf(g * 255), lroundf(b * 255))
}
}

}

我像这样使用它..

let color = UIColor(hex: selectedColor).//"selectedColor" 是 "CC0000">

但是现在当我打印color时,我得到了Optional(UIExtendedSRGBColorSpace 0.8 0 0 1)

但我不确定如何将此颜色设置为我的 segmentControl 的tintColor。如果我做类似self.segCriticalityABCD.tintColor = color的事情,它不会显示任何颜色。

扩展创建的颜色工作正常:

guard let color = UIColor(hex: "#CC0000") else { return }

这将设置所选句段的文本颜色:

segmentedControl.setTitleTextAttributes([.foregroundColor: color], for: .selected)

这将设置所选段的颜色:

segmentedControl.selectedSegmentTintColor = color

其他有价值的信息可在此处获得:

如何为单个段设置 UISegmented控件色调颜色

在这里:

https://developer.apple.com/documentation/uikit/uisegmentedcontrol

最新更新