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Swift extension to get UIColor from it hex representation
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| // | |
| // UIColor+Hex.swift | |
| // Swift extensions | |
| // | |
| import Foundation | |
| import UIKit | |
| enum ColorComponentError: ErrorType { | |
| case InvalidRedComponent | |
| case InvalidGreenComponent | |
| case InvalidBlueComponent | |
| } | |
| extension UIColor { | |
| convenience init(red: UInt8, green: UInt8, blue: UInt8) throws { | |
| if red < 0 || red > 255 { | |
| throw ColorComponentError.InvalidRedComponent | |
| } | |
| if green < 0 || green > 255 { | |
| throw ColorComponentError.InvalidGreenComponent | |
| } | |
| if blue < 0 || blue > 255 { | |
| throw ColorComponentError.InvalidBlueComponent | |
| } | |
| self.init(red: CGFloat(red) / 255.0, green: CGFloat(green) / 255.0, blue: CGFloat(blue) / 255.0, alpha: 1.0) | |
| } | |
| convenience init(hex:Int) { | |
| self.init(hex: hex, alpha:1.0) | |
| } | |
| convenience init(hex:Int, alpha: Double) { | |
| self.init( | |
| red: CGFloat((hex >> 16) & 0xff) / 255.0, | |
| green: CGFloat((hex >> 8) & 0xff) / 255.0, | |
| blue: CGFloat(hex & 0xff) / 255.0, | |
| alpha: CGFloat(alpha)) | |
| } | |
| } |
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