Swift String to UIColor(16进制字符串转颜色值)

发布时间：2020-12-14 01:59:14 所属栏目：百科来源：网络整理

导读：func colorWithHexString (hex: String ) - UIColor { var cString: String = hex . stringByTrimmingCharactersInSet(NSCharacterSet . whitespaceAndNewlineCharacterSet()) . uppercaseString if (cString . hasPrefix( " # " )) { cString = cString . s

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 2)2)
	var bString 4)2)

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

	return UIColor(red: Float(r) / 255.Float(g) / 255Float(b) Float(1))
	}

（编辑：李大同）

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