Integrating SwiftUI

These are notes I’ve taken while watching the video of the corresponding session. They don’t have all the information contained in the video, but I’ve tried to still write the main points for my personal use cases.

SwiftUI to UIKit

Wrap SwiftUI into a controller use: UIHostingController NS ..

Wrap SwiftUI into a view: NSHostingView

Watchkit: class MyWKHostingController:WKHostingController{ override var body: MyView { return MyView() } ovverride setNeedsBodyUpdate(){//to force update

} } Add it to the storyboard and set the custom class.

• More @ SwiftUI in WatchOS

UIKit to SwiftUI

Use UIView in SwiftUI: UIView -> UIViewRepresentable NSView -> NS… WKInterfaceObject -> WK… UIViewController -> … NSV… -> …

You can also update it:

@Binding var rating: Int func updateUIView(_ uiView:UIKitCustomView,context:Context) { uiView.rating = self.rating }

SwiftUI views do not get focus by default, implement focusable to allow it: focusable(:)

Can use SwiftUI with Objective-C as you alreadt do with all the rest of your Swift code thjat you want to expose. @objc class …

Source: Integrating SwiftUI