Getting UILabel to produce an ellipsis rather than shrinking the font
Solution 1
Set the following properties:
Objective C
label.adjustsFontSizeToFitWidth = NO;
label.lineBreakMode = NSLineBreakByTruncatingTail;
Swift
label.adjustsFontSizeToFitWidth = false
label.lineBreakMode = .byTruncatingTail
You can also set these properties in interface builder.
Solution 2
I had an issue producing ellipsis after I styled a UILabel and needed to use UILabel.attributedText
instead of UILabel.text
. There is a line break mode on the paragraph style that will overwrite the UILabel.lineBreakMode
when using attributed text. You'll need to set the lineBreakMode
to .byTruncatingTail
on the attributed string's paragraph style if you want to achieve ellipsis.
e.g.
let text = "example long string that should be truncated"
let attributedText = NSMutableAttributedString(
string: text,
attributes: [.backgroundColor : UIColor.blue.cgColor]
)
let range = NSRange(location: 0, length: attributedText.length)
let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.lineBreakMode = .byTruncatingTail
attributedText.addAttribute(.paragraphStyle, value: paragraphStyle, range: range)
uiLabel.attributedText = attributedText
Solution 3
Swift solution:
label.lineBreakMode = .ByTruncatingTail
Swift 3:
label.lineBreakMode = .byTruncatingTail
Eric Brotto
Updated on May 06, 2021Comments
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Eric Brotto about 3 years
When I dynamically change the text of a UILabel I would prefer to get an ellipsis (dot, dot, dot) rather then have the text be automatically resized. How does one do this?
In other words, if I have UILabel with the word
Cat
with size font 14 and then I change the word toHippopotamus
the font shrinks to fit all the word. I would rather the word be automatically truncated followed by an ellipsis.I assume there is a parameter that can be changed within my UILabel object. I'd rather not do this programmatically.
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jbat100 almost 11 yearsUILineBreakModeTailTruncation is marked as deprecated, docs recommend using NSLineBreakByTruncatingTail. Which does the same thing.
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Jeff Grimes almost 11 yearsI also believe that the default for UILabels is to have adjustsFontSizeToFitWidth set to NO
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Victor Engel over 9 yearsWhat if you have two labels side by side and want one to be able to truncate with an ellipsis and the other one to neither adjust font size nor truncate (assume there is enough space for the text). Their frames adjust using constraints. Is there a constraint that will force a size to be at least as big as the content size needs to be to prevent an ellipsis or truncation?
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Ky - over 8 yearscan't you just do
label.lineBreakMode = .ByTruncatingTail
? -
dijipiji over 8 yearsLooks like it - yes :)
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Koen about 3 yearsWhat is the textString your referencing? Is that supposed to be the "example long strong" ?
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Jacob Lange about 3 yearsSorry I can see how that was confusing, just fixed up the example and confirmed it works in a playground.