How to use UITableView and NSLink together in Swift iOS?

Extension Code:

extension String
func accentTagAndLink(tags:Array<String>) -> NSMutableAttributedString

let attributedString:NSMutableAttributedString = NSMutableAttributedString(string: self)
var NSContents = self as NSString

for tagChild in tags
if !tagChild.starts(with: "<")
let range = NSContents.range(of: "#" + tagChild)
var changeString = ""

for _ in 0..<tagChild.count
changeString += "$"


NSContents = NSContents.replacingOccurrences(of: tagChild, with: changeString, options: .literal, range: range) as NSString
attributedString.addAttribute(.link, value: tagChild, range: range)
attributedString.addAttribute(.foregroundColor, value: UIColor(red: 79/255, green: 205/255, blue: 255/255, alpha: 1), range: range)



return attributedString




TableViewCell :

class PostCell: TableViewCell
@IBOutlet weak var postContent: UITextView!



in mainViewController

class PostViewController: UIViewController, UITableViewDataSource, UITableViewDelegate,UITextViewDelegate

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
let cell = postTableView.dequeueReusableCell(withIdentifier: "PostCell", for: indexPath) as! PostCell
let post = postList[indexPath.row]
let tags = (post["Content"] as! String).FindTagAtString()
cell.postContent.delegate = self
cell.postContent.isSelectable = true
cell.postContent.isEditable = false
cell.postContent.isUserInteractionEnabled = true
cell.postContent.dataDetectorTypes = UIDataDetectorTypes.link
cell.postContent.attributedText = (post["Content"] as! String).accentTagAndLink(tags: tags)
let tap = MyTapGesture(target: self, action: #selector(self.tapTextView))
tap.indexPath = indexPath
cell.postContent.addGestureRecognizer(tap)


func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool
print(URL)
return true


func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath)
print("cell tap")
movePostDetail(indexPath)

@objc func tapTextView(sender:MyTapGesture)
print("cell tap")
movePostDetail(sender.indexPath)





MyTapGesture :

class MyTapGesture: UITapGestureRecognizer
var indexPath:IndexPath!



Content is NormalText + TagText

NormalText + TagText

If tap NormalText to run movePostDetail and if tap TagText to run print(URL) but always movePostDetail when addGestureRecognizer

addGestureRecognizer

How to use together

It worked well when I took TTTAttributedLabel, but because of crash so i haven't used TTTAttributedLabel.

TTTAttributedLabel

TTTAttributedLabel

1 Answer
1

I advice you to use a CUSTOM ATTRIBUTE NAME and handle the tap by yourself.

Solution in Swift 4

override func awakeFromNib()
super.awakeFromNib()
// Initialization code
let tapGes = UITapGestureRecognizer(target: self, action: #selector(TableViewCell.handleTap(sender:)))
contentTf.addGestureRecognizer(tapGes)

let attributeName = "CustomAttributeName"
let attStr = NSAttributedString(string: "https", attributes: [NSAttributedStringKey(rawValue: attributeName):"https"])

contentTf.attributedText = attStr

@objc func handleTap(sender: UITapGestureRecognizer) -> Void
let myTextView = sender.view as! UITextView
let layoutManager = myTextView.layoutManager

// location of tap in myTextView coordinates and taking the inset into account
var location = sender.location(in: myTextView)
location.x -= myTextView.textContainerInset.left;
location.y -= myTextView.textContainerInset.top;

// character index at tap location
let characterIndex = layoutManager.characterIndex(for: location, in: myTextView.textContainer, fractionOfDistanceBetweenInsertionPoints: nil)

// if index is valid then do something.
if characterIndex < myTextView.textStorage.length

// print the character index
print("character index: (characterIndex)")

// print the character at the index
let myRange = NSRange(location: characterIndex, length: 1)
let substring = (myTextView.attributedText.string as NSString).substring(with: myRange)
print("character at index: (substring)")

// check if the tap location has a certain attribute
let attributeName = "CustomAttributeName"
let attributeValue = myTextView.attributedText.attribute(NSAttributedStringKey(rawValue: attributeName), at: characterIndex, effectiveRange: nil) as? String
if let value = attributeValue
print("You tapped on (attributeName) and the value is: (value)")






TEST

character index: 3
character at index: p
You tapped on CustomAttributeName and the value is: https


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