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imzyf / ios-swift-learning-notes

📝 iOS Swift Learning Notes - see Issues
MIT License
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UIColor init 十六进制 #8

Closed imzyf closed 6 years ago

imzyf commented 7 years ago 
extension UIColor {
    // 用数值初始化颜色，便于生成设计图上标明的十六进制颜色
    convenience init(valueRGB: UInt, alpha: CGFloat = 1.0) {
        self.init(
            red: CGFloat((valueRGB & 0xFF0000) >> 16) / 255.0,
            green: CGFloat((valueRGB & 0x00FF00) >> 8) / 255.0,
            blue: CGFloat(valueRGB & 0x0000FF) / 255.0,
            alpha: alpha
        )
    }
}
imzyf commented 6 years ago

R.swift