在UiTextView中插入一个数字并检测该数字

Question

我有一个UITextView，它包含很多结尾带有数字的文本。我正在尝试检测文本视图中的数字，但无法实现。我只能找到解决方案，只能找到链接。

我正在使用NSAttributedString来显示文本。

.dataDetectorTypes似乎不起作用。有人能帮我吗？

我正试着这样做。

let middleTextView: UITextView = {
        let tv = UITextView();
        let attributedText = NSMutableAttributedString(string: "Your NetCode will be sent to", attributes: [NSAttributedStringKey.font : UIFont.systemFont(ofSize: 14)]);
        attributedText.append(NSAttributedString(string: "\n\nXXXX XXX 252", attributes: [NSAttributedStringKey.font: UIFont.boldSystemFont(ofSize: 16)]));
        attributedText.append(NSMutableAttributedString(string: "\n\n To update you mobile number call tel://13 2221", attributes: [NSAttributedStringKey.font: UIFont.systemFont(ofSize: 12)]));
//        let url = NSURL(string: "tel://\(1234)");
//        tv.text = url;
        tv.attributedText = attributedText;
        tv.textAlignment = .center
        tv.backgroundColor = UIColor.clear;
        tv.dataDetectorTypes = .phoneNumber;
        tv.isEditable = false;
        tv.isSelectable = false;
        tv.translatesAutoresizingMaskIntoConstraints = false;
        return tv;
    }();

Answer 1

我看到您使用的是Swift 4的NSAttributedStringKey，所以我在您的问题中添加了这个标签。

您必须手动创建电话URL并设置isSelectable = true，否则在文本视图中不会发生交互：

let middleTextView: UITextView = {
    let attributedText = NSMutableAttributedString(string: "Your NetCode will be sent to", attributes: [.font : UIFont.systemFont(ofSize: 14)])
    attributedText.append(NSAttributedString(string: "\n\nXXXX XXX 252", attributes: [.font: UIFont.boldSystemFont(ofSize: 16)]))
    attributedText.append(NSAttributedString(string: "\n\n To update you mobile number ", attributes: [.font: UIFont.systemFont(ofSize: 12)]))

    let phoneNumber = "13 2221"
    let phoneNumberAttributes: [NSAttributedStringKey: Any] = [
        .font: UIFont.systemFont(ofSize: 12),
        .foregroundColor: UIColor.blue,
        .link: URL(string: "tel://" + phoneNumber.replacingOccurrences(of: " ", with: ""))!,
    ]
    attributedText.append(NSAttributedString(string: phoneNumber, attributes: phoneNumberAttributes))

    tv.attributedText = attributedText
    tv.textAlignment = .center
    tv.backgroundColor = UIColor.clear
    tv.isEditable = false
    tv.isSelectable = true // you must set this to true
    return tv
}()