Is SwiftUI backwards-compatible with iOS 12.x and older?

Question

If I have an app made with SwiftUI, will it work for iOS below iOS 13?

Answer 1

only works for ios 13 or later

you can still attach your SwiftUI code by using

@available(iOS 13.0, *)

if you still using Xcode below Xcode 11 and have SwiftUI code, you can wrap it with

#if canImport(SwiftUI)
...
#endif

This can fix the issue when compiling with Xcode below Xcode 11