TTTAttributedLabel，颜色更改仅在 Swift 中首次启动控制器时有效

Question

 self.descriptionLbl.text = actionReqdText
    let labelString = self.descriptionLbl.text as! NSString
    let contactRange1 = labelString.range(of: actionString1)
    let contactRange2 = labelString.range(of: actionString2)

    self.descriptionLbl.addLink(to: URL(string: link1), with: contactRange1)
    self.descriptionLbl.addLink(to: URL(string: link2), with: contactRange2)

    let attributedText = NSMutableAttributedString(attributedString: descriptionLbl.attributedText!)

    if  UIScreen.main.bounds.size.height < 900 {
        attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 13)!], range: contactRange1)
        attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 13)!], range: contactRange2)
    } else {
        attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 18)!], range: contactRange1)
        attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 18)!], range: contactRange2)
    }

    attributedText.addAttributes([NSAttributedString.Key(rawValue: kCTForegroundColorAttributeName as String as String): UIColor(red: 0.06, green: 0.49, blue: 0.25, alpha: 1.0)], range: contactRange1)

    attributedText.addAttributes([NSAttributedString.Key(rawValue: kCTForegroundColorAttributeName as String as String): UIColor(red: 0.06, green: 0.49, blue: 0.25, alpha: 1.0)], range: contactRange2)

    attributedText.addAttributes([NSAttributedStringKey.underlineStyle: NSUnderlineStyle.styleNone.rawValue], range: contactRange1)
    attributedText.addAttributes([NSAttributedStringKey.underlineStyle: NSUnderlineStyle.styleNone.rawValue], range: contactRange2)

    let paragraphStyle = NSMutableParagraphStyle()

    paragraphStyle.lineSpacing = 1.1 


    attributedText.addAttribute(NSAttributedStringKey.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, attributedText.length))

    descriptionLbl.attributedText = attributedText

I've been trying this code to get a text in green color and with no underline style. It works the first time I launch the view controller. The next time I get to this screen, it is in native blue and underlined. Any help will be appreciated.

Answer 1

self.descriptionLbl.text = actionReqdText
let labelString = self.descriptionLbl.text as! NSString
let contactRange1 = labelString.range(of: actionString1)
let contactRange2 = labelString.range(of: actionString2)

let attributedText = NSMutableAttributedString(attributedString: descriptionLbl.attributedText!)

var linkAttributes: [AnyHashable : Any] = [:]
linkAttributes[NSAttributedString.Key.underlineStyle] = NSUnderlineStyle.styleNone.rawValue

if  UIScreen.main.bounds.size.height < 900 {
                    attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 13)!], range: contactRange1)
                    attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 13)!], range: contactRange2)
                } else {
                    attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 18)!], range: contactRange1)
                    attributedText.addAttributes([NSAttributedStringKey.font : UIFont(name: HELVETICA_LIGHT, size: 18)!], range: contactRange2)
                }

let paragraphStyle = NSMutableParagraphStyle()

paragraphStyle.lineSpacing = 1.1 

linkAttributes[NSAttributedString.Key.foregroundColor] = UIColor(red: 0.06, green: 0.49, blue: 0.25, alpha: 1.0)

linkAttributes[NSAttributedString.Key.paragraphStyle] = paragraphStyle
self.descriptionLbl.attributedText = attributedText
self.descriptionLbl.linkAttributes = linkAttributes
self.descriptionLbl.addLink(to: URL(string: link1), with: contactRange1)
self.descriptionLbl.addLink(to: URL(string: link2), with: contactRange2)

Implemented the above code by replacing the addAttributes with link attributes and moving the addLinks after adding the attributes. This resolved the issue

TTTAttributedLabel，颜色更改仅在 Swift 中首次启动控制器时有效

TTTAttributedLabel, change of color works only the first time controller launches in Swift

xcode

ios

nsmutableattributedstring

swift

nsattributedstringkey