swift - 链接到 TextView 并可以编辑 TextView (Swift 4)

Question

我有一个 TextView。

我怎样才能使链接有效并且您可以编辑TextView？

我怎样才能做到这一点，当我发布一个指向 TextView 的链接时，就可以点击它并浏览它(并用不同的颜色突出显示它)。

我尝试在设置中包含链接，但无法编辑 TextView。

Answer 1

为了能够检测来自 textView 的链接，您需要将 editable 设置为 false。您可以做的是向您的 textView 添加一个手势识别器来检测点击，并且该手势识别器将忽略链接上的点击。下面的示例(阅读注释以获取解释):

class ViewController: UIViewController, UITextViewDelegate {
    // create an outlet for your textView
    @IBOutlet weak var textView: UITextView!

    override func viewDidLoad() {
        super.viewDidLoad()
        textView.delegate = self

        // add a tap gesture to your textView
        let tap = UITapGestureRecognizer(target: self, action: #selector(textViewTapped))
        textView.addGestureRecognizer(tap)

        //add a tap recognizer to stop editing when you tap outside your textView (if you want to)
        let viewTap = UITapGestureRecognizer(target: self, action: #selector(viewTapped))
        self.view.addGestureRecognizer(viewTap)
    }

    @objc func viewTapped(_ aRecognizer: UITapGestureRecognizer) {
        self.view.endEditing(true)
    }

    // when you tap on your textView you set the property isEditable to true and you´ll be able to edit the text. If you click on a link you´ll browse to that link instead
    @objc func textViewTapped(_ aRecognizer: UITapGestureRecognizer) {
        textView.dataDetectorTypes = []
        textView.isEditable = true
        textView.becomeFirstResponder()
    }

    // this delegate method restes the isEditable property when your done editing
    func textViewDidEndEditing(_ textView: UITextView) {
        textView.isEditable = false
        textView.dataDetectorTypes = .all
    }
}

textView 具有以下属性:

和here是指向我创建的示例项目的链接。