Change UILabel attributed String

Question

I use this code to add attributed strings to a label:

let attrString = NSMutableAttributedString(string: text)
// add some attributes
myLabel.attributedText = attrString

Now is it possible to change only the text of the attributed string myLabel and keeping the attributes?

Answer 1

Through it's mutableString property

Example:

let astrMessage = NSMutableAttributedString(string: "Hello World")

//set some attributes
astrMessage.addAttribute(NSAttributedStringKey.foregroundColor,
                         value: UIColor.blue,
                         range: NSRange(location: 0, length: 5))
astrMessage.addAttribute(NSAttributedStringKey.foregroundColor,
                         value: UIColor.red,
                         range: NSRange(location: 6, length: 5))

//update
astrMessage.mutableString.setString("World Welcome")

NOTE: Only the first attribute will be applied to the updated text.