How to display clickable links in UITextView - ios

Question

I am trying to display an attributed string in a UITextview with clickable links. I've created a simple test project to see where I'm going wrong and still can't figure it out. I've tried enabling user interaction and setting the shouldInteractWithURLs delegate method, but it's still not working. Here's my code (for a view controller that only contains a textview)
#IBOutlet weak var textView: UITextView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let string = "Google"
let linkString = NSMutableAttributedString(string: string)
linkString.addAttribute(NSLinkAttributeName, value: NSURL(string: "https://www.google.com")!, range: NSMakeRange(0, string.characters.count))
linkString.addAttribute(NSFontAttributeName, value: UIFont(name: "HelveticaNeue", size: 25.0)!, range: NSMakeRange(0, string.characters.count))
textView.attributedText = linkString
textView.delegate = self
textView.selectable = true
textView.userInteractionEnabled = true
}
And here are the delegate methods I've implemented:
func textViewShouldBeginEditing(textView: UITextView) -> Bool {
return false
}
func textView(textView: UITextView, shouldInteractWithURL URL: NSURL, inRange characterRange: NSRange) -> Bool {
return true
}
This still isn't working. I've searched on this topic and nothing has helped yet. Thanks so much in advance.

Answer 1

Just select the UITextView in your storyboard and go to "Show Attributes inspector" and select selectable and links. As the image below shows. Make sure Editable is unchecked.

Answer 2

For swift3.0
override func viewDidLoad() {
super.viewDidLoad()
let linkAttributes = [
NSLinkAttributeName: NSURL(string: "http://stalwartitsolution.co.in/luminutri_flow/terms-condition")!
] as [String : Any]
let attributedString = NSMutableAttributedString(string: "Please tick box to confirm you agree to our Terms & Conditions, Privacy Policy, Disclaimer. ")
attributedString.setAttributes(linkAttributes, range: NSMakeRange(44, 18))
attributedString.addAttribute(NSUnderlineStyleAttributeName, value: NSNumber(value: 1), range: NSMakeRange(44, 18))
textview.delegate = self
textview.attributedText = attributedString
textview.linkTextAttributes = [NSForegroundColorAttributeName: UIColor.red]
textview.textColor = UIColor.white
}
func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
return true
}

Answer 3

Swift 3 iOS 10: Here's Clickable extended UITextView that detect websites inside the textview automatically as long as the link start with www. for example: www.exmaple.com if it exist anywhere in the text will be clickable. Here's the class:
import Foundation
import UIKit
public class ClickableTextView:UITextView{
var tap:UITapGestureRecognizer!
override public init(frame: CGRect, textContainer: NSTextContainer?) {
super.init(frame: frame, textContainer: textContainer)
print("init")
setup()
}
required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
setup()
}
func setup(){
// Add tap gesture recognizer to Text View
tap = UITapGestureRecognizer(target: self, action: #selector(self.myMethodToHandleTap(sender:)))
// tap.delegate = self
self.addGestureRecognizer(tap)
}
func myMethodToHandleTap(sender: UITapGestureRecognizer){
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 {
let orgString = myTextView.attributedText.string
//Find the WWW
var didFind = false
var count:Int = characterIndex
while(count > 2 && didFind == false){
let myRange = NSRange(location: count-1, length: 2)
let substring = (orgString as NSString).substring(with: myRange)
// print(substring,count)
if substring == " w" || (substring == "w." && count == 3){
didFind = true
// print("Did find",count)
var count2 = count
while(count2 < orgString.characters.count){
let myRange = NSRange(location: count2 - 1, length: 2)
let substring = (orgString as NSString).substring(with: myRange)
// print("Did 2",count2,substring)
count2 += 1
//If it was at the end of textView
if count2 == orgString.characters.count {
let length = orgString.characters.count - count
let myRange = NSRange(location: count, length: length)
let substring = (orgString as NSString).substring(with: myRange)
openLink(link: substring)
print("It's a Link",substring)
return
}
//If it's in the middle
if substring.hasSuffix(" "){
let length = count2 - count
let myRange = NSRange(location: count, length: length)
let substring = (orgString as NSString).substring(with: myRange)
openLink(link: substring)
print("It's a Link",substring)
return
}
}
return
}
if substring.hasPrefix(" "){
print("Not a link")
return
}
count -= 1
}
}
}
func openLink(link:String){
if let checkURL = URL(string: "http://\(link.replacingOccurrences(of: " ", with: ""))") {
if UIApplication.shared.canOpenURL(checkURL) {
UIApplication.shared.open(checkURL, options: [:], completionHandler: nil)
print("url successfully opened")
}
} else {
print("invalid url")
}
}
public override func didMoveToWindow() {
if self.window == nil{
self.removeGestureRecognizer(tap)
print("ClickableTextView View removed from")
}
}
}