CODEWITHSUNDEEP
iosswiftuitextviewemoji
cb428
cb428

Reputation: 495

UITextView character limit count is incorrect with emoji

I have an issue with my UITextView character limit where the count double, triple, or quadruple counts emoji. I want emoji to count as 1 character, the way they do in the Twitter iOS app. Here is the code I have in my shouldChangeTextInRange method

let characters = textView.text.characters.count + (text.characters.count - range.length)
        if characters <= self.characterLimit {
            // update character limit label as we type
            self.characterLimitLabel.text = String(characters) + "/" + String(self.characterLimit)
            return true
        } else {
            return false
        }

What should I change to produce the proper result when accounting for emoji?

Upvotes: 2

Views: 1315

Answers (2)

Grigor Hakobyan
Grigor Hakobyan

Reputation: 852

Use NSString length instead of String count 

    let newString: NSString = currentString.replacingCharacters(in: range, with: text) as NSString
    let characters = newString.length
    if characters <= self.characterLimit {
        // update character limit label as we type
        self.characterLimitLabel.text = String(characters) + "/" + String(self.characterLimit)
        return true
    } else {
        return false
    }

Upvotes: 1

LuKenneth
LuKenneth

Reputation: 2237

I don't think it's going to be an easy solution... You will have to check the unicode values to see if each character is an emoji. You will have to hard code those cases, and then you will have to update them every time new emojis are released. My recommendation is that you should just forget about emojis costing more characters... If you want more information, there's a github repo that can check for emojis pretty simply.. but then again, it may become outdated (if not already outdated).

https://github.com/woxtu/NSString-RemoveEmoji

Upvotes: 1

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