How to get UIApplication and options dictionary when handling url callbacks in SwiftUI-CodePudding

I understand that in SwiftUI lifecycle, we can handle url callbacks as follow:

var body: some Scene {
    WindowGroup {
        ContentView()
            .onOpenURL { (url) in
                        // Handle url here
                }
        }
}

However, I wonder how do we access the UIApplication instance and the options dictionary in the UIKit AppDelegate lifecycle method, i.e.

func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {

In some cases, third party SDK requires passing in those fields, and I wonder how do we do that in SwiftUI.

CodePudding user response：

You’re right, some features that previously required an app delegate in UIKit world now have alternative approaches in SwiftUI. However, in some cases we do still need an app delegate; but whereas one is created for you in the starting code for new UIKit apps, for SwiftUI apps we have to create it for ourselves.

First, create a class that inherits from NSObject and conforms to UIApplicationDelegate:

class AppDelegate: NSObject, UIApplicationDelegate {
  func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey : Any]? = nil
  ) -> Bool {
    // your code goes here
    return true
  }
}

Then, in your SwiftUI App struct, use the @UIApplicationDelegateAdaptor property wrapper to connect the class to your app:

@main
struct MyApp: App {
    @UIApplicationDelegateAdaptor(AppDelegate.self) var appDelegate

    var body: some Scene {
        WindowGroup {
            ContentView()
        }
    }
}

CodePudding user response：

Use onContinueUserActivity

@main
struct TestApp: App {

    var body: some Scene {
        WindowGroup {
            ContentView()
            .onContinueUserActivity(NSUserActivityTypeBrowsingWeb, perform: handleUserActivity)
        }
    }

    func handleUserActivity(_ userActivity: NSUserActivity) {
        print(userActivity.webpageURL)
        print(userActivity.userInfo)
    }
}