Label NSMutableAttributedString programmatically swift 4

问题

I have to make sure that I can click on the word "Privacy" in order to open a web link. I tried with the suggestions that I found but they are old things and they do not seem to work anymore .. I do not know how I can solve the problem

    private lazy var firstTermDescriptionLabel: UILabel = {
    let label = UILabel(frame: .zero)
    let firstTermsMessage = "I Agree to the License Terms and Privacy Policy"
    var attributedString = NSMutableAttributedString.init(string: "Privacy")
    attributedString.addAttribute(.link, value: "https://www.google.com/url?q=https://www.iubenda.com/privacy-policy/58446596&sa=D&source=hangouts&ust=1528787597335000&usg=AFQjCNEPkofPxSm7TDRMvxjOjCz5cio27w", range: NSRange(location: 0, length: 7))

    label.isUserInteractionEnabled = true
    label.text = firstTermsMessage
    label.font = UIFont.systemFont(ofSize: 13, weight: .regular)
    label.textAlignment = .left
    label.numberOfLines = 0
    label.translatesAutoresizingMaskIntoConstraints = false
    label.heightAnchor.constraint(equalToConstant: 36).isActive = true
    return label
}()

回答1:

Updated to Swift 4

Add this extension to your project

extension NSMutableAttributedString {

    public func setAsLink(textToFind:String, linkURL:String) -> Bool {

        let foundRange = self.mutableString.range(of: textToFind)
        if foundRange.location != NSNotFound {
//            self.addAttribute(NSLinkAttributeName, value: linkURL, range: foundRange)
            self.addAttributes([NSAttributedStringKey.link: URL(string: linkURL)!], range: foundRange)
            return true
        }
        return false
    }
}

Change your like below:

let firstTermsMessage = "I Agree to the License Terms and Privacy Policy"
        let attributedString = NSMutableAttributedString(string:firstTermsMessage)
        let linkWasSet = attributedString.setAsLink(textToFind: "Privacy", linkURL: "https://www.google.com/url?q=https://www.iubenda.com/privacy-policy/58446596&sa=D&source=hangouts&ust=1528787597335000&usg=AFQjCNEPkofPxSm7TDRMvxjOjCz5cio27w")

        if linkWasSet {
            // adjust more attributedString properties
        }
        lableAtt.attributedText = attributedString
        lableAtt.isUserInteractionEnabled = true
lableAtt.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleTapOnLabel(_:))))


 @objc func handleTapOnLabel(_ recognizer: UITapGestureRecognizer) {
        guard let text = lableAtt.attributedText?.string else {
            return
        }

        if let range = text.range(of:"terms") {
//            goToTermsAndConditions()
        } else if let range = text.range(of: "Privacy"){
            print(range)
            UIApplication.shared.open(URL(string: "https://www.google.com/url?q=https://www.iubenda.com/privacy-policy/58446596&sa=D&source=hangouts&ust=1528787597335000&usg=AFQjCNEPkofPxSm7TDRMvxjOjCz5cio27w")!, options: [:])
        }
    }

回答2:

If you’re up for using a bit of third-party code, TTTAttributedLabel is a widely-used “drop-in replacement for UILabel” that lets you embed a link easily!

You can find it here: https://github.com/TTTAttributedLabel/TTTAttributedLabel/

来源：https://stackoverflow.com/questions/50793833/label-nsmutableattributedstring-programmatically-swift-4

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uilabel