从SwiftUI.Font转换为UIFont [英] Convert from SwiftUI.Font to UIFont

问题描述

我有一个 UIViewRepresentable 和一个 UITextView ，并且我想使用当前的 Font 设置字体在 UITextView 上代码>来自SwiftUI环境.我只需要一个简单的初始化，如:

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)

但是我找不到任何这样的东西.而且 Font 类型似乎没有任何我可以用来实现的信息.有人知道在两种字体表示之间进行转换的方法吗?

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?

推荐答案

有些破绽，但可以解决(做另一个方向留给读者练习).

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
    }
}

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