UITextView href link 不工作

Question

这是要显示的文本：

© Gregory A. Dunbar <a href=\"http://gregoryadunbar.com\" rel=\"nofollow\">gregoryadunbar.com</a>\n

这是我用来显示 UITextView 和触发器的代码 link :

这里p.caption就是上面的字符串

textViewCaption = UITextView(frame: CGRect(x: labelPadding, y: 0.0, width: self.bounds.size.width - labelPadding * 2.0, height: self.bounds.size.height))
        textViewCaption.delegate = self
        textViewCaption.autoresizingMask = [.flexibleWidth, .flexibleHeight]
        textViewCaption.isOpaque = false
        textViewCaption.backgroundColor = UIColor.black
        textViewCaption.textAlignment = NSTextAlignment.center

        textViewCaption.textColor = UIColor.white
        textViewCaption.font = UIFont.systemFont(ofSize: 17.0)
        textViewCaption.isEditable = false
        textViewCaption.isSelectable = true
        textViewCaption.dataDetectorTypes = .link

        if let p = media  {
            let htmlData = NSString(string:String(format: "<HTML><body><font size='4'>%@</font></body></HTML>", p.caption)).data(using: String.Encoding.unicode.rawValue)

            let attributedString = try! NSAttributedString(data: htmlData!, options: [.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil)
            textViewCaption.attributedText = attributedString
        }

        self.addSubview(textViewCaption)

这是检查 link 的委托调用：

public func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange) -> Bool {

            if #available(iOS 10.0, *) {
                UIApplication.shared.open(URL, options: [:])
            } else {
                UIApplication.shared.openURL(URL)
            }

        return true
    }

注意：所有这些都在自定义视图中。

这是回应：

所以我这里有两个问题：

Text not shown completely.

Link not clickable.

Answer 1

默认情况下会阻止带有 http 而不是 https 的链接。您需要在 info.plist

中添加例外

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>gregoryadunbar.com</key>
        <dict>
            <key>NSIncludesSubdomains</key>
            <true/>
        </dict>
    </dict>
</dict>

或允许所有不安全的 links

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

此外，还有更简单的方法可以将可点击的 link 添加到属性字符串，而不是构建 HTML 文档，您可以

let text = "your full string including link gregoryadunbar.com"
let range = text.range(of: "gregoryadunbar.com")

let attributedText = NSMutableAttributedString(string: text)
attributedText.addAttribute(.link, value: "http://gregoryadunbar.com", range: range)
attributedText.addAttribute(.font, value: someFont, range: Range(location: 0, length: text.characters.count))
attributedText.addAttribute(.foregroundColor, value: UIColor.white range: Range(location: 0, length: text.characters.count))

如果你不设置 UITextView 的委托，这应该默认工作

如果您的 link 包含在 a href 标签中，您可以像这样去除 link 中的所有 HTML 标签：

let link = "A. Dunbar <a href=\"http://gregoryadunbar.com\" rel=\"nofollow\">gregoryadunbar.com</a>\n"
let linkWithoutHtmlTags = link.replacingOccurrences(of: "<[^>]+>", with: "", options: .regularExpression, range: nil) // gregoryadunbar.com

UITextView href link 不工作

UITextView href link not working

ios

swift

uitextview

nsattributedstring