Question 69260 in IOS Swift Question posted in
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UIlabel NSMutableAttributedString second line not visible upon line break – Ios swift

I am trying to create a UILabel which contains two texts of different fonts where one NSMutableAttributedString sits vertically on top of the other. Upon attempting to insert a line break via swift’s n I found that the appended string disappears. I have tried a variety of lineBreakModes with no result (with and without n) along with ensuring the frame isnt constricting the texts visibility by setting a large maximumLineHeight.

I should also mention that according to Apple’s documentation when setting UILabel.attributedText to any NSAttributedText instance

When the label has an attributed string value, the system ignores the textColor, font, textAlignment, lineBreakMode, and lineBreakStrategy properties. Set the foregroundColor, font, alignment, lineBreakMode, and lineBreakStrategy properties in the attributed string instead.

Here is some of the code simplified for the sake of the question (I have also tried calling .sizeTofit() after setting the labels attributedText as well as setting different .lineBreakStrategys)

let paragraphStyle = NSMutableParagraphStyle()
paragraphStyle.alignment = .center
paragraphStyle.lineBreakMode = .byWordWrapping

let totalVisitsString = NSMutableAttributedString(string: "(visitLogs.count)n", attributes: [.font : UIFont.systemFont(ofSize: 25), .paragraphStyle : paragraphStyle])

totalVisitsString.append(NSMutableAttributedString(string: "Total visits", attributes: [.font : UIFont.systemFont(ofSize: 14)]))

totalVisitsLabel.attributedText = totalVisitsString

the label itself:

var totalVisitsLabel: UILabel = {
        let label = UILabel()
        
        label.translatesAutoresizingMaskIntoConstraints = false
        
        return label
    }()
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2

Answers


  1. 0

    By default your label’s numberOfLines is 1. You never change it so that is what you get.

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  2. 0

    Labels when created are defaulted to 1 line. You’ll need to set the number of lines to 0 (unlimited) or whatever number you want to max it at.

    var totalVisitsLabel: UILabel = {
    let label = UILabel()
    label.numberOfLines = 0
    label.translatesAutoresizingMaskIntoConstraints = false
    return label
}()
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