Swift 4 Conversion error - Type 'NSAttributedStringKey' has no member 'foregroundColorNSAttributedStringKey'

Question

I converted my code from Swift 3 to Swift 4 but getting this error:

Type 'NSAttributedStringKey' has no member 'foregroundColorNSAttributedStringKey'

My code is:

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)

Answer 1

Replace line

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

with

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

Also you can use addAttributes method to set more than 1 attribute at a time for a range

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