您可以使用NavigationStack来实现这一点。
下面是示例代码。

class Coordinator: ObservableObject {
    @Published var path: [String] = []
}

struct Testing: View {
    @StateObject var coordinator = Coordinator()
    
    var body: some View {
        NavigationStack(path: $coordinator.path) {
            DefaultView()
        }
        .environmentObject(coordinator)
    }
    
}

struct DefaultView: View {
    @EnvironmentObject var coordinator: Coordinator
    @State private var isDetailViewActive = true
    
    var body: some View {
        Text("Hello world")
            .onAppear {
                if isDetailViewActive == true {
                    self.isDetailViewActive = false
                    coordinator.path.append("DetailsView")
                }
            }
            .navigationDestination(for: String.self) { view in
                DetailsView()
            }
    }
}

struct DetailsView: View {
    var body: some View {
        NavigationView {
            Text("How are you")
        }
    }
}