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swiftfontsswiftui

Custom font size for Text in SwiftUI

I have a label in my view that I want to use the system font size in medium, with a size of 21 points.
I created a custom extension to re-use the font created:

extension Font {
    static var primaryButton: Font {
        return Font.custom("SFUIDisplay-Light", size: 21)
    }
}

However, this does not have any effect. I changed the string to HelveticaNeue-UltraLight and it did work, so I'm guessing that SFUIDisplay-Light is simply the incorrect font name.
In font book, it says SFProText-Light, but that also did not work for me.

What is the correct font name of the San Francisco font in SwiftUI?
Or: how can I set the font size using the system font?

Solution

  • You can set an explicit size for the system font with:

    .font(.system(size: 60))