CODEWITHSUNDEEP
swiftuitextviewuitextviewdelegate
Akash Shindhe
Akash Shindhe

Reputation: 576

Replace text with attributed text and add action to it

I have array of strings [apple,mango,banana,kiwi,orange] while the user is typing on textview if the last word is matched to any of the words in the array it should be underlined and have tap gesture added to it . I am using the 

         func textView(_ textView: UITextView, shouldChangeTextIn range: NSRange, replacementText text: String) -> Bool { 
let lastword = textviewtext.lastword()//i have last word i have to replace

        if myarray.contains(lastword) {
    //here code for replacing the text and underline it and add tap gesture 
    }

how to do this exapmle - user if typed - " orange apple are good for health " here the orange and apple should be underlined and should have tap enabled with some actions .like alert with "orange tapped" or "apple tapped"

Upvotes: 0

Views: 2124

Answers (1)

brimstone
brimstone

Reputation: 3400

To underline certain words, you're going to want to use rangeOfString to get an NSRange of the word in your text view and create a new attributed string to apply to the text view. Here's an example:

let at = NSMutableAttributedString(string: textView.text)
words.forEach { word in
    if let range = textView.text.range(of: word) {
        at.addAttribute(NSUnderlineColorAttributeName, value: UIColor.red, range: range)
    }
}

textView.attributedText = at

To recognize when the word is tapped, see this answer.

Upvotes: 1

Related Questions