shouldInteractWithURL called twice on 3d touch - uitextview

Question

Below is the issue that i am trying to fix. I have a textView whose text is an attributed string with link attribute. On clicking the link, i should go to other screen. So, I am performing that screen navigation on shouldInteractWithURL() delegate method of the textView. Everything works fine except on force touching the textView, the next page is loading twice. That means shouldInteractWithURL() is called twice on force tap. I fixed it by checking the stack of the view controllers and if the last VC is the one that is about to load, I am returning from there. But, I wanted to know if there is any other solution other than this. Below is the code snippet
textView.text = ""
guard var str = myStr else {
return nil
}
let linkAttribute = [NSLinkAttributeName: NSURL(string: "")!]
var attributedStr:NSMutableAttributedString?
if delay {
str += " "
attributedStr = NSMutableAttributedString(string: str)
let ctaStr = kSuccessStr
let ctaAttributedString = NSAttributedString(string: ctaStr, attributes: linkAttribute)
attributedStr!.appendAttributedString(ctaAttributedString)
} else {
let ctaStr = kFailedStr
attributedStr = NSMutableAttributedString(string: ctaStr, attributes: linkAttribute)
}
textView.linkTextAttributes = [NSForegroundColorAttributeName: UIColor.grayColor()]
textView.attributedText = attributedStr
textView.delegate = thisTableViewDelegate
func textView(textView: UITextView, shouldInteractWithURL URL: NSURL, inRange characterRange: NSRange) -> Bool
{
if let textLink = textView.text
{
if (textLink.rangeOfString(str1) != nil) ||
(textLink.rangeOfString(str2) != nil)
{
showSignUpForm(self)
}
else
{
showSuccessfulForm()
}
}
return true
}

Answer 1

Use textView:shouldInteractWithURL:inRange:interaction: instead.
Check if interaction != UITextItemInteractionInvokeDefaultAction and return NO.
See https://developer.apple.com/reference/uikit/uitextviewdelegate/1618606-textview?language=objc

Answer 2

I handle only invokeDefaultAction and it works for me:
func textView(_ textView: UITextView, shouldInteractWith URL: URL, in characterRange: NSRange, interaction: UITextItemInteraction) -> Bool {
if interaction == .invokeDefaultAction {
//do some stuff
}
return false
}