I am programmatically setting the hex color with alpha but result is not looking as expected. Example: hex color #478295 with opacity 50% which is #80478295 and I am using
`
public convenience init?(hex: String) {
let r, g, b, a: CGFloat
if hex.hasPrefix("#") {
let start = hex.index(hex.startIndex, offsetBy: 1)
let hexColor = String(hex[start...])
if hexColor.count == 8 {
let scanner = Scanner(string: hexColor)
var hexNumber: UInt64 = 0
if scanner.scanHexInt64(&hexNumber) {
r = CGFloat((hexNumber & 0xff000000) >> 24) / 255
g = CGFloat((hexNumber & 0x00ff0000) >> 16) / 255
b = CGFloat((hexNumber & 0x0000ff00) >> 8) / 255
a = CGFloat(hexNumber & 0x000000ff) / 255
self.init(red: r, green: g, blue: b, alpha: a)
return
}
}
}
return nil
}
`
Expected: Red: 0.277, green: 0.511, blue: 0.583, alpha: 0.5
Actual: red 0.5019607843137255 green 0.2784313725490196 blue 0.5098039215686274 alpha 0.5843137254901961
Expected result 
Actual result 
Xcode: 13.2.1
>Solution :
In your question you put the alpha at the first 8 bits, not the last. So it goes like this:
a = CGFloat((hexNumber & 0xff000000) >> 24) / 255
r = CGFloat((hexNumber & 0x00ff0000) >> 16) / 255
g = CGFloat((hexNumber & 0x0000ff00) >> 8) / 255
b = CGFloat(hexNumber & 0x000000ff) / 255