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ibrennan/Swift - Hex to UIColor

Forked from shadcn/gist:de147c42d7b3063ef7bc
Last active August 29, 2015 14:10
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Revisions

  1. ibrennan revised this gist Dec 2, 2014. 1 changed file with 21 additions and 23 deletions.
    44 changes: 21 additions & 23 deletions Swift - Hex to UIColor
    View file
    Original file line number Diff line number Diff line change
    @@ -1,23 +1,21 @@
    // Creates a UIColor from a Hex string.
    func colorWithHexString (hex:String) -> UIColor {
    var cString:String = hex.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()).uppercaseString

    if (cString.hasPrefix("#")) {
    cString = cString.substringFromIndex(1)
    }

    if (countElements(cString) != 6) {
    return UIColor.grayColor()
    }

    var rString = cString.substringToIndex(2)
    var gString = cString.substringFromIndex(2).substringToIndex(2)
    var bString = cString.substringFromIndex(4).substringToIndex(2)

    var r:CUnsignedInt = 0, g:CUnsignedInt = 0, b:CUnsignedInt = 0;
    NSScanner.scannerWithString(rString).scanHexInt(&r)
    NSScanner.scannerWithString(gString).scanHexInt(&g)
    NSScanner.scannerWithString(bString).scanHexInt(&b)

    return UIColor(red: Float(r) / 255.0, green: Float(g) / 255.0, blue: Float(b) / 255.0, alpha: Float(1))
    }
    func hexStringToUIColor (hex:String) -> UIColor {
    var cString:String = hex.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet() as NSCharacterSet).uppercaseString

    if (cString.hasPrefix("#")) {
    cString = cString.substringFromIndex(advance(cString.startIndex, 1))
    }

    if (countElements(cString) != 6) {
    return UIColor.grayColor()
    }

    var rgbValue:UInt32 = 0
    NSScanner(string: cString).scanHexInt(&rgbValue)

    return UIColor(
    red: CGFloat((rgbValue & 0xFF0000) >> 16) / 255.0,
    green: CGFloat((rgbValue & 0x00FF00) >> 8) / 255.0,
    blue: CGFloat(rgbValue & 0x0000FF) / 255.0,
    alpha: CGFloat(1.0)
    )
    }
  2. ibrennan renamed this gist Dec 2, 2014. 1 changed file with 0 additions and 0 deletions.
    0 gistfile1.swift → Swift - Hex to UIColor
    View file
    File renamed without changes.
  3. @shadcn shadcn revised this gist Jul 26, 2014. 1 changed file with 4 additions and 4 deletions.
    8 changes: 4 additions & 4 deletions gistfile1.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -10,14 +10,14 @@ func colorWithHexString (hex:String) -> UIColor {
    return UIColor.grayColor()
    }

    var rString = cString.substringFromIndex(0).substringToIndex(2)
    var gString = cString.substringFromIndex(2).substringToIndex(4)
    var bString = cString.substringFromIndex(4).substringToIndex(6)
    var rString = cString.substringToIndex(2)
    var gString = cString.substringFromIndex(2).substringToIndex(2)
    var bString = cString.substringFromIndex(4).substringToIndex(2)

    var r:CUnsignedInt = 0, g:CUnsignedInt = 0, b:CUnsignedInt = 0;
    NSScanner.scannerWithString(rString).scanHexInt(&r)
    NSScanner.scannerWithString(gString).scanHexInt(&g)
    NSScanner.scannerWithString(bString).scanHexInt(&b)

    return UIColor(red: Double(r) / 255.0, green: Double(g) / 255.0, blue: Double(b) / 255.0, alpha: Double(1))
    return UIColor(red: Float(r) / 255.0, green: Float(g) / 255.0, blue: Float(b) / 255.0, alpha: Float(1))
    }
  4. @shadcn shadcn created this gist Jun 5, 2014.
    23 changes: 23 additions & 0 deletions gistfile1.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,23 @@
    // Creates a UIColor from a Hex string.
    func colorWithHexString (hex:String) -> UIColor {
    var cString:String = hex.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()).uppercaseString

    if (cString.hasPrefix("#")) {
    cString = cString.substringFromIndex(1)
    }

    if (countElements(cString) != 6) {
    return UIColor.grayColor()
    }

    var rString = cString.substringFromIndex(0).substringToIndex(2)
    var gString = cString.substringFromIndex(2).substringToIndex(4)
    var bString = cString.substringFromIndex(4).substringToIndex(6)

    var r:CUnsignedInt = 0, g:CUnsignedInt = 0, b:CUnsignedInt = 0;
    NSScanner.scannerWithString(rString).scanHexInt(&r)
    NSScanner.scannerWithString(gString).scanHexInt(&g)
    NSScanner.scannerWithString(bString).scanHexInt(&b)

    return UIColor(red: Double(r) / 255.0, green: Double(g) / 255.0, blue: Double(b) / 255.0, alpha: Double(1))
    }