How to incorporate Framework SwiftUI

Question

We can use Framework SwiftUI only from iOS 13.0+. So how to incorporate this framework from the deployment Target 10.0 or at least 12.0.

Answer 1

Build Phases → Link Binary With Libraries → Add SwiftUI.framework (Status: Optional)

import SwiftUI

@available(iOS 13.0, *)
struct SwiftUIView : View {
    var body: some View {
        Text("Hello World!")
    }
}

@available(iOS 13.0, *)
struct SwiftUIView_Previews : PreviewProvider {
    static var previews: some View {
        SwiftUIView()
    }
}

etc.

SwiftUI preview for this target doesnʼt work, but you can add a special target “SwiftUI Preview”.