How do I cut off the text view after 20 characters?

Question

I am trying to limit the number of characters inside the text view to 20. After 20 it should instead have "...". The function is not firing and I am setting the delegate correctly.

Animal class

cell.pn.text = np[indexPath.row]
cell.pn.selectable = false
cell.pn.delegate = self

Extension of Animal class

extension Animal : UITextViewDelegate{
func textView(textView: UITextView, shouldChangeTextInRange range: NSRange, replacementText text: String) -> Bool {
    return textView.text.characters.count + (text.characters.count - range.length) <= 20
    }
}

Originally I wanted 75, but forgot to change it, when I breakpoint it nothing happens. — manatee, Jun 06 '16 at 19:19

score 3 · Answer 1 · answered Jun 06 '16 at 19:26

3

Try this:

func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool {
        let text = textField.text
        let newLength = text.characters.count + string.characters.count - range.length
        return newLength <= 20
    }

answered Jun 06 '16 at 19:26

chickenparm

1,570
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Does not work, 1) when I break point on the function nothing happens, 2) I am using a text view not a text field – manatee Jun 06 '16 at 19:29

score 2 · Accepted Answer · answered Jun 06 '16 at 19:28

2

You can use something like this:

            if displayName.characters.count > 20 {
                displayName = (displayName as NSString).substringToIndex(20)
                displayName.appendContentsOf("...")
            }

answered Jun 06 '16 at 19:28

Bhavuk Jain

2,167
1
15
23

How do I cut off the text view after 20 characters?

2 Answers2