How to create hyperlink while selecting text in UITextView in swift? - swift

Question

I want to create a hyperlink with selected text in UITextView in swift.eg. When I type "Please click here" in UITextView and select "here" from the sentence I will open a UIAlertController with textView where I can enter the url and while tapping "Save" button on UIAlertController I want the word "here" to add the hyperlink. How do I achieve this?
This is my code for UITextView:
var textView: TextView?
override public func viewDidLoad() {
super.viewDidLoad()
textView = TextView(
editorConfig: EditorConfig(
theme: getTheme()
)
)
}
override public func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
view.backgroundColor = .white
layoutTextView()
}
private func layoutTextView() {
textView?.frame = CGRect(
x: view.safeAreaInsets.left,
y: view.safeAreaInsets.top,
width: view.bounds.width - view.safeAreaInsets.left - view.safeAreaInsets.right,
height: view.frame.size.height / 3
)
textView?.layer.borderWidth = 1
textView?.layer.borderColor = UIColor.gray.cgColor
textView?.isEditable = true
textView?.isUserInteractionEnabled = true
textView?.textColor = .black
if let textView = textView {
view.addSubview(textView)
}
}
I have a button insertLink which displays the UIAlertController. Here's the code for the Alert:
func showAlert(url: String?) {
guard let url = url else {
return
}
let attributedString = NSMutableAttributedString(string: url)
attributedString.SetAsLink(textToFind: url + alertTextView.text, linkURL: url + alertTextView.text)
let alertController = UIAlertController(title: "Link", message: nil, preferredStyle: .alert)
alertTextView.textContainerInset = UIEdgeInsets.init(top: 15, left: 5, bottom: 8, right: 35)
let saveAction = UIAlertAction(title: "Save", style: .default) { (action) in
alertController.view.removeObserver(self, forKeyPath: "bounds")
}
saveAction.isEnabled = false
let cancelAction = UIAlertAction.init(title: "Cancel", style: .default) { (action) in
alertController.view.removeObserver(self, forKeyPath: "bounds")
}
alertController.view.addObserver(self, forKeyPath: "bounds", options: NSKeyValueObservingOptions.new, context: nil)
NotificationCenter.default.addObserver(forName: UITextView.textDidChangeNotification, object: alertTextView, queue: OperationQueue.main) { (notification) in
saveAction.isEnabled = self.alertTextView.text != ""
}
alertTextView.backgroundColor = UIColor.white
alertTextView.isEditable = true
alertTextView.attributedText = attributedString
alertTextView.dataDetectorTypes = UIDataDetectorTypes.link
alertTextView.layer.cornerRadius = 20
alertController.view.addSubview(self.alertTextView)
alertController.addAction(saveAction)
alertController.addAction(cancelAction)
self.present(alertController, animated: true, completion: nil)
}
override public func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
if keyPath == "bounds"{
if let rect = (change?[NSKeyValueChangeKey.newKey] as? NSValue)?.cgRectValue {
let margin:CGFloat = 8.0
alertTextView.frame = CGRect.init(x: rect.origin.x + margin, y: rect.origin.y + margin, width: rect.width - 2*margin, height: rect.height / 2)
alertTextView.bounds = CGRect.init(x: rect.origin.x + margin, y: rect.origin.y + margin, width: rect.width - 2*margin, height: rect.height / 2 - 10)
}
}
}
So in the UIAlertController's textView(alertTextView) when I type "https://www.google.com" how do I send this link to the main UITextView and onClick of it it should open browser?