CODEWITHSUNDEEP
swiftstringlabel
Kárpáti András
Kárpáti András

Reputation: 1239

Swift: string - calculating first character position at height?

I would like to shorten long strings with an ending of "see more...".

Everything goes well if the string does not have new lines.

"The cat ate the cake and went outside the house, without any problems. Then the next day something really bad happened. The owner kicked the cat out, and the little animal had no chance to go back."

becomes

"The cat ate the cake and went outside the house, without any problems. Then the see more..."

But besides this, I would like to limit the height as well. So that the string can be maximum 200pt in height, like this:

2 new lines

>

1 new line

3 new lines

>

>

0 new line

should become

2 new lines

>

1 new line

See more...

How can I determine, after which character should I to put the "See more..." text?

Code:

func shorten(maxWidth : CGFloat) -> NSMutableAttributedString {


        let font = UIFont.preferredFont(forTextStyle: UIFont.TextStyle.body)
        // If height is more than 200pt
        if self.height(withConstrainedWidth: maxWidth, font: font) > 200 {
            // Here.. how?
           return finalString
        }

        // If char is more than 400
        if self.count > 400 {
            // BLA BLA CUT TEXT
            return finalString
        }

        let finalString = NSMutableAttributedString(string: self, attributes: [NSAttributedString.Key.font : font])

        return finalString
    }

Upvotes: 0

Views: 38

Answers (1)

ManWithBear
ManWithBear

Reputation: 2875

I would highly recommend you not put see more... as plain string inside your text.

Better approach is to UIButton with see more... text right after you label.

In such case you can easily manipulate it's position, form, UI, etc

Upvotes: 1

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