How to honor Dynamic Type Accessibility Sizes with a custom font in an iOS storyboard

Question

How can I use the dynamic type text style \"Title 1\" and set the font face to the built-in font Chalkboard SE for a UILabel in a storyboard?

I need to honor the Dynamic

Answer 1

Try my solution without need to listening for NSNotification.Name.UIContentSizeCategoryDidChange.

Simply override traitCollectionDidChange on any UIView or UITableViewCell and update/calulate the fontsize with the similar TextStyle.

You can simply test it with any simulated Device and the Accessibility Inspector on MacOS.

 override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
       super.traitCollectionDidChange(previousTraitCollection)

        let pointSize = UIFontDescriptor.preferredFontDescriptor(withTextStyle: .title1).pointSize
        titleLabel.font = titleLabel.font.withSize(pointSize)
    }