ios - Swift 4转换错误-类型'NSAttributedStringKey'没有成员'foregroundColorNSAttributedStringKey'

我将代码从Swift 3转换为Swift 4，但收到此错误:

类型“NSAttributedStringKey”没有成员“foregroundColorNSAttributedStringKey”

我的代码是:

let labelText = NSMutableAttributedString(string: (self.productDetailsInfo?.productAttributes?[indexPath.row].Name as String?)!)
labelText.append(NSAttributedString(string:"*"))
let selectedRange = NSMakeRange(labelText.length - 1, 1);
labelText.addAttribute(NSAttributedStringKey.foregroundColorNSAttributedStringKey.foregroundColor, value: UIColor.red, range: selectedRange)
labelText.addAttribute(NSAttributedStringKey.baselineOffset, value: 2, range: selectedRange)

最佳答案

更换线

  labelText.addAttribute(NSAttributedStringKey.foregroundColorNSAttributedStringKey.foregroundColor, value: UIColor.red, range: selectedRange)

与

  labelText.addAttribute(NSAttributedStringKey.foregroundColor, value: UIColor.red, range: selectedRange)

您也可以使用addAttributes方法为一个范围一次设置多个属性

  labelText.addAttributes([NSAttributedStringKey.foregroundColor:UIColor.red,NSAttributedStringKey.backgroundColor:UIColor.blue], range: selectedRange)