'Convert from SwiftUI.Font to UIFont

I have a UIViewRepresentable with a UITextView and I want to set the font on the UITextView using the current Font from the SwiftUI environment. I just need a simple init like:

UIFont(_ swiftUIFont: Font)

But I can't find any such thing. And the Font type doesn't seem to have any information I can use to try to implement one. Anyone know of a way to convert between the two font representations?

Solution 1:^[1]

A bit of a hack but works (doing the other direction is left as an exercise to the reader).

extension UIFont {
    class func preferredFont(from font: Font) -> UIFont {
        let uiFont: UIFont
        
        switch font {
        case .largeTitle:
            uiFont = UIFont.preferredFont(forTextStyle: .largeTitle)
        case .title:
            uiFont = UIFont.preferredFont(forTextStyle: .title1)
        case .title2:
            uiFont = UIFont.preferredFont(forTextStyle: .title2)
        case .title3:
            uiFont = UIFont.preferredFont(forTextStyle: .title3)
        case .headline:
            uiFont = UIFont.preferredFont(forTextStyle: .headline)
        case .subheadline:
            uiFont = UIFont.preferredFont(forTextStyle: .subheadline)
        case .callout:
            uiFont = UIFont.preferredFont(forTextStyle: .callout)
        case .caption:
            uiFont = UIFont.preferredFont(forTextStyle: .caption1)
        case .caption2:
            uiFont = UIFont.preferredFont(forTextStyle: .caption2)
        case .footnote:
            uiFont = UIFont.preferredFont(forTextStyle: .footnote)
        case .body:
            fallthrough
        default:
            uiFont = UIFont.preferredFont(forTextStyle: .body)
        }
        
        return uiFont
    }
}

Solution 2:^[2]

No you can't, you have to use the params you passed to the Font to create UIFont

Solution 3:^[3]

Here is a reformatting of Luke Howard's solution to reduce the amount of text

extension UIFont {
  class func preferredFont(from font: Font) -> UIFont {
    let style: UIFont.TextStyle
      switch font {
        case .largeTitle:  style = .largeTitle
        case .title:       style = .title1
        case .title2:      style = .title2
        case .title3:      style = .title3
        case .headline:    style = .headline
        case .subheadline: style = .subheadline
        case .callout:     style = .callout
        case .caption:     style = .caption1
        case .caption2:    style = .caption2
        case .footnote:    style = .footnote
        case .body: fallthrough
        default:           style = .body
     }
     return  UIFont.preferredFont(forTextStyle: style)
   }
}

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution	Source
Solution 1
Solution 2	JIE WANG
Solution 3

'Convert from SwiftUI.Font to UIFont

Solution 1:[1]

Solution 2:[2]

Solution 3:[3]

Sources

Related Questions

Solution 1:^[1]

Solution 2:^[2]

Solution 3:^[3]