Swift version: 5.1
iOS 13 lets us use icons from a range of over 1500 designed by Apple, all of which come in a variety of weights and sizes. These icons form part of new
UIImage API, and they are vector-based so you can us them at a range of sizes without loss of quality.
Note: This is a stringly typed API, so you should download the new SF Symbols app that lists all variants – download it here.
To load a system icon you use the new
UIImage(systemName:) initializer. In its most basic form it looks like this:
let paperPlane = UIImage(systemName: "paperplane.fill") let action = UIImage(systemName: "square.and.arrow.down")
You can request specific weights of your icon by creating an instance of
UIImage.SymbolConfiguration like this:
let boldConfig = UIImage.SymbolConfiguration(weight: .bold) let boldBell = UIImage(systemName: "bell", withConfiguration: boldConfig)
More usefully, you can also tell UIKit what kind of text is being rendered nearby so it can ensure the icon is sized appropriately, like this:
let largeConfig = UIImage.SymbolConfiguration(textStyle: .largeTitle) let largeBolt = UIImage(systemName: "bolt", withConfiguration: largeConfig)
This ensures your icons work correctly alongside your other Dynamic Type code.
SPONSORED Instabug helps you identify and resolve severe crashes quickly. You can retrace in-app events and know exactly which line of code caused the crash along with environment details, network logs, repro steps, and the session profiler. Ask more questions or keep users up-to-date with in-app replies straight from your dashboard. Instabug takes data privacy seriously, so no one sees your data but you! See more detailed features comparison and try Instabug's crash reporting SDK for free.
The biggest ever Hacking with Swift sale is now on, letting you save 50% on all books and bundles. Learn something new with Swift and enjoy great savings while the sale lasts!
Available from iOS 13.0
This is part of the Swift Knowledge Base, a free, searchable collection of solutions for common iOS questions.