Ios 如何从onContinueUserActivity更改WindowGroup视图？

我有一个深度链接的应用程序，所以首先我要呈现一个加载或主视图：

@main
struct AppMain: App {
    
    var body: some Scene {
        WindowGroup {
            LoadingView()
                .onContinueUserActivity(NSUserActivityTypeBrowsingWeb, perform: handleUserActivity)
        }
    }
}

但是，在响应活动的my

handleUserActivity

中，如何根据活动参数更新屏幕？例如，我提取了一个值，并希望从这里渲染视图：

private extension AppMain {
    
    func handleUserActivity(_ userActivity: NSUserActivity) {
        guard let url = userActivity.webpageURL,
              let components = NSURLComponents(url: url, resolvingAgainstBaseURL: true),
              let queryItems = components.queryItems
        else {
            return
        }
        
        if let modelID = queryItems.first(where: { $0.name == "id" })?.value {
            SmoothieView(id: modelID) // TODO: How to I render view??
        }
    }
}

---

如何替换加载视图并显示平滑视图？

这里有一种可能的方法-使用顶部视图中的应用程序状态对象和观察者根据状态进行切换

（注意：代码是在适当的位置键入的，因此可能会出现拼写错误）

class AppState:ObservableObject{
@已发布的var modelID:String？
}
@主要
结构AppMain:App{
@StateObject变量appState=appState（）
var body：一些场景{
窗口组{
ContentView（）
.environmentObject（appState）
.onContinueUserActivity（NSUserActivityTypeBrowsingWeb，执行：handleUserActivity）
}
}
}
专用扩展AppMain{
func handleUserActivity（uUserActivity:NSUserActivity）{
guard let url=userActivity.webpageURL，
让components=NSURLComponents（url:url，resolvingAgainstBaseURL:true），
让queryItems=components.queryItems
否则{
返回
}
如果让modelID=queryItems.first（其中：{$0.name==“id”}）？.value{
self.appState.modelID=modelID//
class AppState: ObservableObject {
   @Published var modelID: String?
}

@main
struct AppMain: App {
    @StateObject var appState = AppState()

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

private extension AppMain {
    
    func handleUserActivity(_ userActivity: NSUserActivity) {
        guard let url = userActivity.webpageURL,
              let components = NSURLComponents(url: url, resolvingAgainstBaseURL: true),
              let queryItems = components.queryItems
        else {
            return
        }
        
        if let modelID = queryItems.first(where: { $0.name == "id" })?.value {

            self.appState.modelID = modelID // << here !!

        }
    }
}

// as soon as you receive model id the view will be refreshed
struct ContentView: View {
   @EnvironmentObject var appState: AppState

   var body: some View {
      if appState.modelID == nil {
         LoadingView()
      } else {
         SmoothieView(id: appState.modelID!)
      }
   }
}