5回答

• 

  Kalpa晓

  2016-04-06 22:52:20

  已采纳

  func UIColorFromRGB (hex:String) -> UIColor {

          var cString:String = hex.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceAndNewlineCharacterSet()).uppercaseString

          

          if (cString.hasPrefix("#")) {

              cString = (cString as NSString).substringFromIndex(1)

          }

          let rString = (cString as NSString).substringToIndex(2)

          let gString = ((cString as NSString).substringFromIndex(2) as NSString).substringToIndex(2)

          let bString = ((cString as NSString).substringFromIndex(4) as NSString).substringToIndex(2)

          

          var r:CUnsignedInt = 0, g:CUnsignedInt = 0, b:CUnsignedInt = 0;

          NSScanner(string: rString).scanHexInt(&r)

          NSScanner(string: gString).scanHexInt(&g)

          NSScanner(string: bString).scanHexInt(&b)

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

      }

  
  

  eg:

  self.setTitleColor(UIColorFromRGB("0xec8c00"), forState: .Selected)

  
  

  1 0

  恩格贝

  非常感谢！

  2016-04-27 16:03:32

  共 1 条回复 >

• 

  拾稻子

  2016-11-23 15:35:43

  已用粗体标出。
  

  0 0
• 

  拾稻子

  2016-11-23 15:35:05

  func UIColorFromRGB (hex:String) -> UIColor {       
          var cString:String = hex.trimmingCharacters(in: NSCharacterSet.whitespacesAndNewlines)
          if (cString.hasPrefix("#")) {        
              cString = (cString as NSString).substring(from: 1)
          }    
          let rString = (cString as NSString).substring(to: 2)
          let gString = ((cString as NSString).substring(from: 2) as NSString).substring(to: 2)
          let bString = ((cString as NSString).substring(from: 4) as NSString).substring(to: 2)
          var r:CUnsignedInt = 0, g:CUnsignedInt = 0, b:CUnsignedInt = 0;
          Scanner(string: rString).scanHexInt32(&r)
          Scanner(string: gString).scanHexInt32(&g)
          Scanner(string: bString).scanHexInt32(&b)
          return UIColor(red: CGFloat(r) / 255.0, green: CGFloat(g) / 255.0, blue: CGFloat(b) / 255.0, alpha: CGFloat(1)) 
      }
  这些需要改动的。
  

  0 0
• 

  拾稻子

  2016-11-23 15:31:59

  亲测，可以使用谢谢！不过swift3的语法略微有些变化，需要稍微修改下。
  

  0 0
• 

  白云蓝天

  2016-02-17 19:32:18

  这个还需要转换成UIColor里面三色才能使用

  0 0