我正在尝试将SwiftUI集成到我的项目中，并且我目前正在使用一个故事板，该故事板通过我的应用程序委托启动，代码如下：

_rootNavigiationController = [[UINavigationController alloc] init];
_rootNavigiationController.navigationBarHidden = YES;

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:StoryboardLoginRegister bundle:nil];
BasicInformation *basicInfo = (BasicInformation *)[storyboard instantiateViewControllerWithIdentifier:@"basic-info"];
[self.rootNavigiationController setViewControllers:@[basicInfo]];

因此，本质上我的App委托位于objective-c中，Windows根控制器是UINavigation控制器。
我的BasicInformation类如下所示：

class BasicInfo: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        self.navigationController?.isNavigationBarHidden = true;
        // Do any additional setup after loading the view.
    }
    
    @IBSegueAction func addSwiftUi(_ coder: NSCoder) -> UIViewController? {
        let BasicInfoUI = BasicInfo_UI();
        let hostingController = UIHostingController(coder: coder, rootView: BasicInfoUI);
        hostingController?.navigationController?.isNavigationBarHidden = true;
        return hostingController;
    }
    
    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
    }
    */

}

基本信息的Swift界面如下：

struct BasicInfo_UI: View {
    @State var username: String = ""
    @State var isPrivate: Bool = true
    @State var notificationsEnabled: Bool = false
    @State private var previewIndex = 0
    var previewOptions = ["Always", "When Unlocked", "Never"]

    var body: some View {
        Form {
            Section(header: Text("PROFILE")) {
                TextField("Username", text: $username)
                Toggle(isOn: $isPrivate) {
                    Text("Private Account")
                }
            }
            
            Section(header: Text("NOTIFICATIONS")) {
                Toggle(isOn: $notificationsEnabled) {
                    Text("Enabled")
                }
                Picker(selection: $previewIndex, label: Text("Show Previews")) {
                    ForEach(0 ..< previewOptions.count) {
                        Text(self.previewOptions[$0])
                    }
                }
            }
            
            Section(header: Text("ABOUT")) {
                HStack {
                    Text("Version")
                    Spacer()
                    Text("2.2.1")
                }
            }
            
            Section {
                Button(action: {
                    print("Perform an action here...")
                }) {
                    Text("Reset All Settings")
                }
            }
        }
    }
}

struct BasicInfo_UI_Previews: PreviewProvider {
    static var previews: some View {
        BasicInfo_UI()
    }
}

我唯一的问题是，我似乎不明白为什么我的应用程序UI的顶部有一个导航栏

希望有人能给我解释一下为什么在我的控制器事件的顶部会有一个导航栏，尽管我已经在应用程序的多个地方显式地将navigationbarhidden设置为true