replace contents of NSMutableAttributedString after appended

Asked Jun 03 '18 at 09:52

Active Jun 03 '18 at 16:45

Viewed 36 times

I want to change a contents of NSMutableAttributedString object which was already appended to anonter NSMutableAttributedString (which is displayed in UITextView). The following code did not updating text on the screen:

var my_text = NSMutableAttributedString.init(string: "")
my_text_view.attributedText = my_text

let ats = NSMutableAttributedString.init(string: ":"+sml+":", attributes: [.font:UIFont.systemFont(ofSize: 16),.foregroundColor:UIColor.gray])
my_text.append(ats)
my_text_view.attributedText = my_text // this refreshes all attachments

...

ats.mutableString.setString("") // The text on the screen did not changed
my_text_view.attributedText = my_text //  Still no changes

All of the image attachments are updating, so this is not an UITextView issue. So, how to update a text in NSMutableAttributedString?

edited Jun 03 '18 at 16:45

Anton Belousov

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asked Jun 03 '18 at 09:52

Pavel

I suggest instead of updating the existing mutable string, just create a new one. – Dejan Skledar Jun 03 '18 at 09:55
First change your my_text attributed string then set it to your text view – Tanvir Nayem Jun 03 '18 at 09:58
4

When you append `ats` to `my_text`, it just copies the data. It doesn't keep a *live copy* of `ats`, so modifying `ats` after the fact has no further effect on `my_text`. – vacawama Jun 03 '18 at 09:58

replace contents of NSMutableAttributedString after appended

0 Answers0