Swift 3 - Adjust Font Size to Fit Width, Multiple Lines

Question

I have a UILabel and it is set to 42.0 pt font, and the width of the label is set using autoconstraints based on factors other than the label itself (aka the things to the right

Answer 1

This will work..

• Set minimum scale factor for your label. as shown in this image.
• Set number of lines = 2 // or zero (0) if you want more number of lines
• Set line breaking mode to '.byTruncatingTail' for 2 lines

Swift 3
Set number of lines zero for dynamic text information, it will be useful for varying text.

var label = UILabel()
let stringValue = "A label\nwith\nmultiline text."
label.text = stringValue
label.numberOfLines = 2 // 0
label.lineBreakMode = .byTruncatingTail // or .byWrappingWord
label.minimumScaleFactor = 0.5 // It is not required but nice to have a minimum scale factor to fit text into label frame

Also, don't set height constraint for your label more than 2 lines.