UILabel truncate text not working

Question

I set the numberOfLines to 1 in the IB, but when I set the text to a long string, it doesn't truncate. If I set the numberOfLines to 2, the truncate works fine.What should I do to truncate a long string into a single line?

Solution 1

simple, set the following properties:

label.adjustsFontSizeToFitWidth = NO;
label.lineBreakMode = NSLineBreakByTruncatingTail;

Solution 2

If you're using attributed string and having set paragraph style to the attributed string: make sure you're passing paragraphStyle.lineBreakMode = .byTruncatingTail.

Solution 3

If using auto layout, in my case, there was a constraint missing. The UILabel grows its width if no constraint is set on its width/trailing. Once its width is limited, for instance to its superview, the truncation occurs.

Solution 4

You probably have a constraint on a label in that section that is making things go haywire.

Double check your constraints or remove them for that label or other controls in that section.

The storyboard option for a label: "Line Breaks:Truncate Tail" will to the work you are looking for.

Solution 5

If you set the label's autoshrink to "Fixed Font Size" in IB, you will always get a truncatation when the string width beyond the label width. I guess you happened to set that to "Minimum Font Scale" or "Minimum Font Font", which will lead a resizing when the string is too long.

(Xcode 4.5, other version of Xcode and IB may be different property name)

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