Question

如果我使用以下相同的函数为带有UILabel和UITextView的属性字符串设置一些属性，则两种情况下的显示看起来都相同，但是我无法点击UILabel的链接（用户交互为已启用）。

为什么UILabel不响应点击，而UITextVIew响应，如何使UILabel表现得像UITextVIew？

我看到了一个过去的问题，答案是为UILabel设置dataDetectors，但这一定是针对旧版本的Swift的，因为它不再存在，而且我也没有看到类似的替代方案。 / p>

class MyViewController: UIViewController {

    @IBOutlet weak var label1: UILabel!
    @IBOutlet weak var textView1: UITextView!

    let kTextContent = "This is some text with bold and link1 and link2 and color."
    let kBoldText = "bold"
    let kLink1Text = "link1"
    let kLink2Text = "link2"
    let kColorText = "color"
    let kUrl1 = "http://www.google.com"
    let kUrl2 = "http://www.apple.com"

    override func viewDidLoad() {
        super.viewDidLoad()

        label1.text = kTextContent
        label1.attributedText = setAttributes(theAttributedString: label1.attributedText?.mutableCopy(with: nil) as! NSMutableAttributedString)

        textView1.text = kTextContent
        textView1.attributedText = setAttributes(theAttributedString: textView1.attributedText?.mutableCopy(with: nil) as! NSMutableAttributedString)
    }

    func setAttributes(theAttributedString: NSMutableAttributedString) -> NSMutableAttributedString
    {
        let boldRange = theAttributedString.mutableString.range(of: kBoldText)
        let boldFontAttribute: [NSAttributedString.Key: Any] = [NSAttributedString.Key.font: UIFont.boldSystemFont(ofSize: 20)]
        theAttributedString.addAttributes(boldFontAttribute, range: boldRange)

        let link1Range = theAttributedString.mutableString.range(of: kLink1Text)
        theAttributedString.addAttribute(.link, value: kUrl1, range: link1Range)
        theAttributedString.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: link1Range)

        let link2Range = theAttributedString.mutableString.range(of: kLink2Text)
        theAttributedString.addAttribute(NSAttributedString.Key.link, value: kUrl2, range: link2Range)
        theAttributedString.addAttribute(NSAttributedString.Key.underlineStyle, value: NSUnderlineStyle.single.rawValue, range: link2Range)

        let colorRange = theAttributedString.mutableString.range(of: kColorText)
        theAttributedString.addAttribute(NSAttributedString.Key.foregroundColor, value: UIColor.red , range: colorRange)

        return theAttributedString
    }

Answer 1

一个能响应点击的import re rgx = "^\d*\.?\d*$" if re.match(rgx, x): print("it's a number!") x = float(x)是UILabel，我建议您将UIButton换成一个按钮并相应地设置其样式。然后，您只需将UILabel挂接到它上，它将起作用。

IBAction默认响应互动

UILabel vs UITextView和属性字符串URL链接

1 个答案: