UILabel text truncation vs. line breaks in text

Question

I have a UILabel that is put as titleView in the navigation bar. I want it to have 2 lines, where the first line can be truncated and the second is center align

Answer 1

change your line breakmode to ByTruncatingMiddle instead of ByTruncatingTail. Something like below,

    label.lineBreakMode = .ByTruncatingMiddle

Hope this will help :)

Answer 2

Navigation Tittle with sub-Tittle (Multiline Navigation Tittle)

Use NSMutableAttributedString with UITextView instead of UILabel

(because, if tittle is large then UILabel lineBreakMode with .byTruncatingTail is not working for first line in UILabel)

func multilineNavigation(title:String,subTitle:String) {

    DispatchQueue.main.async {
        let titleAttributedStr = NSMutableAttributedString(string: title, attributes: [NSAttributedStringKey.foregroundColor: UIColor.orange,NSAttributedStringKey.font: UIFont(name: "Helvetica Neue", size: 17.0) ?? UIFont()])
        let subTitleAttributedStr = NSMutableAttributedString(string: "\n\(subTitle)", attributes: [NSAttributedStringKey.foregroundColor: UIColor.green,NSAttributedStringKey.font: UIFont(name: "Helvetica Neue", size: 12.0) ?? UIFont()])
        titleAttributedStr.append(subTitleAttributedStr)

        let paragraphStyle = NSMutableParagraphStyle()
        paragraphStyle.lineSpacing = 1
        paragraphStyle.lineBreakMode = .byTruncatingTail

        titleAttributedStr.addAttribute(.paragraphStyle, value:paragraphStyle, range:NSMakeRange(0, titleAttributedStr.length))

        let textView = UITextView()
        textView.attributedText = titleAttributedStr
        textView.backgroundColor = .clear
        textView.isUserInteractionEnabled = false
        textView.textContainerInset = .zero
        textView.textAlignment = .center
        textView.frame = CGRect(x: 0, y: 0, width: textView.intrinsicContentSize.width, height: 44)

        self.navigationItem.titleView = textView
    }
}