在 UITextView 中触发超 link 文本点击和普通文本点击

Question

您好，我正在尝试为超 link 点击和 UITextView

中的普通文本点击触发单独的点击事件

如何在 UITextView

中分离超 link 文本点击和普通文本点击

希望你能理解我的问题。

这是我试过的。

     override func viewDidLoad() {
        super.viewDidLoad()
        let atributedHtmlText = """
            Hey I dont have hyper link text so trigger func A(). Click <a href="http://www.google.com">I have hyper link so trigger func b here</a> for more information.
            """
        testTV.setAttributedHtmlText(atributedHtmlText)

        let tap = UITapGestureRecognizer(target: self, action: #selector(ViewController.tapFunction))
        testTV.isUserInteractionEnabled = true
        testTV.addGestureRecognizer(tap)
        testTV.delegate = self
     }

     @objc func tapFunction(sender:UITapGestureRecognizer) {
        print("tap working")
     }

     extension ViewController: UITextViewDelegate {
        func textView(_ textView: UITextView, shouldInteractWith URL: URL,
                  in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
          print("URL Text Tapped ", URL)
          return false
    }
}

Answer 1

定义一个属性字符串，然后通过定义要点击打开 link 的范围来为其添加属性。并且不要忘记添加 textView 的委托方法，并在视图中执行 YourTextView.delegate = self 加载。

    class ViewController: UIViewController, UITextViewDelegate {
    @IBOutlet var textView: UITextView!

    override func viewDidLoad() {
        textView.delegate = self.
        let attributedString = NSMutableAttributedString(string: "want to search something on Google! Click Here")
        attributedString.addAttribute(.link, value: "www.google.com", range: NSRange(location: 36, length: 10))

        textView.attributedText = attributedString
    }

    func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
        UIApplication.shared.open(URL)
        return false
    }
}

Answer 2

一个可能的解决方案是在没有 link 属性的地方添加一个 "fake URL"（就像“内部 URL 方案看起来很相似）：

attributedText.enumerateAttribute(.link, in: NSRange(location: 0, length: attributedText.length), options: []) { (attribute, range, pointee) in
    //If there is no URL => Set our custom one
    if attribute == nil {
        attributedText.addAttribute(.link, value: "com.myapp.custom", range: range)
    }
}

并在此委托方法中，检查 URL 的值。

func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
    print("url: \(URL)")
    if url == ... {} else { ... }
    return false
}

在 UITextView 中触发超 link 文本点击和普通文本点击

Trigger hyper link text click and and normal text click in UITextView

uitextview

nsattributedstring

ios

swift