I am updating the icons in my app. After I heard Apple released an icon font named SF Symbols
with iOS 13, I was wondering if I can only use them in iOS 13 or if it is possible to use them in lower versions of iOS too.
If I want to use them, do I have to implement a fallback for older versions?
This icon set is based on SF Symbols https://framework7.io/icons/
I made a tools can export sfsymbols to Xcode easily:
https://happycoding.app
SF Symbols is a system only supported on iOS 13 or later - it's not possible to use them on iOS 12 or below. You'll need to use fallbacks for those older operating systems.
See Human Interface Guidelines
You can open .svg use Figma. Then select the Regular-M and export as PDF or PNG.
Work around in progress
I did not manage to find the solution, I gave up, but actually I went pretty far in investigating. Maybe someone luckier than me will be able to figure out hpw to continue the work I started:
In Apple documentation, it is said that, in order to easily browse all the new iOS 13 SF Symbols, you can dowmload the SF Symbols app : https://developer.apple.com/design/human-interface-guidelines/sf-symbols/overview/
Once instaled you can go in
Application > SF Symbols > showPackage content
From there, under
content > Resources
we can find an interesting file namedSFSymbolsFallback.ttf
And if you try to open this file on https://fontdrop.info/ you can see that it contains all the font glyphs that are released in iOS 13 as SF Font, with associated unicodes
Bingo? not so fast...
From there I tried to import this .ttf into my project in iOS 12, on XCode 10.2.1, but it seems that it is never properly imported. It is not retrievable in the list of available fonts when calling
UIFont.familyNames
More interesting, if I try to import this font in Font Book app, I receive a warning that says that it contains duplication, some kind of conflict with an existing font
From there?
My guess is that there is another font that prevent SF Symbols to be installed, in Font Book and on Xcode.
One of the solution could be to find the one that is in conflict in XCode package and delete it ( this may be
Symbols
font orSan Francisco
that are causing problems idk)I also tried to open the font file with a font editor and change its Name and family Name without success.
If anyone want to continue investigating..
Hope this can help someone !
You can not use SFSymbols natively in iOS versions older than iOS 13.
However if you are interested in using the graphics you can use the SFSymbols app to export SVG versions of the icon. Then use some graphics tool to convert them to icons you can import into your asset catalog.
According to the Human Interface Guidelines you should not use the new icons in older iOS releases though: