CODEWITHSUNDEEP
swiftxcodetextviewswift4nsattributedstring
diego
diego

Reputation: 428

UITextView : the foregroundColor of link attributes dont change (NSAttributedStringKey)

I have a problem with NSAttributedStringKey and UITextView

In fact, I am trying to do this :

enter image description here

Here is the code that should theoretically work 

class ViewController: UIViewController,UITextViewDelegate {
 @IBOutlet weak var txtView: UITextView!
 override func viewDidLoad() {
    super.viewDidLoad()
    txtView.delegate = self;
    let linkAttributes : [NSAttributedStringKey : Any] = [
            .link: URL(string: "https://exemple.com")!,
            .font:UIFont.boldSystemFont(ofSize: 18),
            .foregroundColor: UIColor.blue] ;
    let attributedString = NSMutableAttributedString(string: "Just 
     click here to do stuff...")
    attributedString.setAttributes(linkAttributes, range: 
    NSMakeRange(5, 10))
     txtView.attributedText = attributedString;
}}

but this code displays this

enter image description here

so I tried to solve the problem by adding two extra lines of code : 

 let linkAttributes : [NSAttributedStringKey : Any] = [
            .link: URL(string: "https://exemple.com")!,
            .font:UIFont.boldSystemFont(ofSize: 18),
            .foregroundColor: UIColor.blue,
            .strokeColor : UIColor.black,//new line
            .strokeWidth : -1,//new line
           ] ;

Unfortunately, the display wasn't what I wanted.

enter image description here

Someone to help me on this problem, I searched the internet but found nothing.

Thanks in advance

INFO : the first image I took of this publication :Link in UITextView not working in Swift 4

Upvotes: 4

Views: 819

Answers (2)

iMike
iMike

Reputation: 178

seems that ".link" uses the tintColor of UITextView. Try setting the tintColor...

Upvotes: 6

Michael Dautermann
Michael Dautermann

Reputation: 89549

I got your code to work with minimal tweaking:

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    let basicAttributes : [NSAttributedStringKey : Any] = [
        .font: UIFont.systemFont(ofSize: 18),
        .foregroundColor: UIColor.black]
    let linkAttributes : [NSAttributedStringKey : Any] = [
        .link: URL(string: "https://www.stackoverflow.com")!,
        .font:UIFont.boldSystemFont(ofSize: 18),
        .foregroundColor: UIColor.blue]
    let attributedString = NSMutableAttributedString(string: "Just click here to do stuff...", attributes: basicAttributes)
    attributedString.addAttributes(linkAttributes, range: NSMakeRange(5, 10))
    textView.attributedText = attributedString
}

You probably notice I set the font for the entire string (which is probably not necessary, especially if you already set the UITextView object's font in your XIB or storyboard), but I'm guessing the real solution is to use addAttributes, which adds the link attributes to the other attributes in the attributed string.

Upvotes: 2

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