How can I open my SwiftUI app and perform a function using NSUseractivity from within Siri Intent Extension?

Question

My Problem

My app has its own Shortcuts actions created using Intents Extensions. They perform background actions perfectly.

For some actions, I\'m trying to m

Answer 1

Like you already commented you can use func scene(_ scene: UIScene, continue userActivity: NSUserActivity) to continue the NSUserActivity when the app is still in the background.

However when the app is closed you can implement let userActvity = connectionOptions.userActivities.first inside the scene(_:willConnectTo:options:) method inside the SceneDelegate to access the activity the user wants to continue.

Just adding this piece of code to the standard implementation of this method would look like this:

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
    // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
    // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
    // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).

    // Use a UIHostingController as window root view controller
    if let windowScene = scene as? UIWindowScene {
        let window = UIWindow(windowScene: windowScene)
        window.rootViewController = UIHostingController(rootView: ContentView())
        self.window = window
        window.makeKeyAndVisible()

        //Standard implementation until here
        if let userActvity = connectionOptions.userActivities.first {
            if let intent = userActivity.interaction?.intent as? YourIntent {
                print(“do something”)
            }
        }
    }
}

This works for Siri Intents with Swift 5 Xcode 11.

For Handoff though the .userActivities should not be used as the documentation says, instead the associated delegate methods will be called (scene(_:continue:)):

This property does not contain user activity objects related to Handoff. At connection time, UIKit delivers only the type of a Handoff interaction in the handoffUserActivityType property. Later, it calls additional methods of the delegate to deliver the NSUserActivity object itself.