swiftui - 由于从tabview到多个视图内部观察到视图模型，视图自动弹出到swift ui中的上一个视图？

Question

我在将 1 个视图推送到另一个视图时遇到问题。让我解释一下层次结构。

ContentView -> 2 个选项卡，TabAView 和 TabBView 在 TabBView 内。有 1 个视图使用了 ConnectView：连接按钮在哪里。点击 Connect 按钮后，用户移动到另一个视图，称为 UserAppView。

这是更好地理解我的问题的代码。

内容视图.swift

struct ContentView: View {
    enum AppPage: Int {
        case TabA=0, TabB=1
    }
    
    @StateObject var settings = Settings()
    @ObservedObject var userViewModel: UserViewModel
    @ObservedObject var userAppViewModel: UserAppViewModel
    
    var body: some View {
        NavigationView {
            TabView(selection: $settings.tabItem) {
                TabAView(userViewModel: userViewModel, userAppViewModel: userAppViewModel)
                    .tabItem {
                        Text("TabA")
                    }
                    .tag(AppPage.TabA)
                
                TabBView(userViewModel: userViewModel, userAppViewModel: userAppViewModel)
                    .tabItem {
                        Text("Apps")
                    }
                    .tag(AppPage.TabB)
            }
            .accentColor(.white)
            .edgesIgnoringSafeArea(.top)
            .onAppear(perform: {
                settings.tabItem = .TabA
            })
            .navigationBarTitleDisplayMode(.inline)
        }
        .environmentObject(settings)
    }
}

这是 TabAView：

 struct TabAView: View {
    
    @ObservedObject var userViewModel: UserViewModel
    @ObservedObject var userAppViewModel: UserAppViewModel
    @EnvironmentObject var settings: Settings
    
    init(userViewModel: UserViewModel, userAppViewModel: UserAppViewModel) {
        self.userViewModel = userViewModel
        self.userAppViewModel =  userAppViewModel
    }
    
    var body: some View {
        Vstack {
            /// code
        }
        .onAppear(perform: {
            /// code
        })
        .environmentObject(settings)
    }
}

这是另一个 TabBView：

struct TabBView: View {
    
    @ObservedObject var userViewModel: UserViewModel
    @ObservedObject var userAppViewModel: UserAppViewModel
    
    init(userViewModel: UserViewModel, userAppViewModel: UserAppViewModel) {
        self.userViewModel = userViewModel
        self.userAppViewModel =  userAppViewModel
    }
    
    var body: some View {
        VStack (spacing: 10) {
            NavigationLink(destination: ConnectView(viewModel: ConnectViewModel(id: id!), userViewModel: userViewModel, userAppViewModel: userAppViewModel)) {
                UserCardWidget()
            }
        }
    }
}

TabBView 上使用了 1 个 connectView，用户将通过该 connectView 进行连接。此处使用 ConnectViewModel 来调用连接 API。

class ConnectViewModel: ObservableObject {
    
    var id: String?
    
    init(id: String) {
        self.id = id
    }
    
    func connect(completion: @escaping () -> Void) {
        APIService.shared.connectApp(id: self.id!) { connected in
            DispatchQueue.main.async {
                self.isConnected = connected ?? false
                completion()
            }
        }
    }
}

这是连接视图

struct ConnectView: View {
    
    @ObservedObject var connectViewModel: ConnectViewModel
    @ObservedObject var userViewModel: UserViewModel
    @ObservedObject var userAppViewModel: UserAppViewModel
    @State var buttonTitle = "CONNECT WITH THIS"
    @State var isShowingDetailView = false
    
    var body: some View {
        VStack {
            Spacer()
            if let id = connectViewModel.id {
                NavigationLink(destination: UserAppView(id: id, userAppViewModel: userAppViewModel, userViewModel: userViewModel), isActive: $isShowingDetailView) {
                    Button(buttonTitle, action: {
                        connectViewModel.connect {
                            buttonTitle = "CONNECTED"
                            isShowingDetailView = true
                        }
                    })
                }
            }
        }
    }
}

这是调用 API 以获取一些与用户相关的详细信息的 UserAppViewModel：

类 UserAppViewModel: ObservableObject {

var id = ""
func getdetails() {
    APIService.shared.getDetails() { userDetails in
        DispatchQueue.main.async {
            /// code
        }
    }
}

}

这是 UserAppView 类

struct UserAppView: View {
    
    @ObservedObject var userViewModel: UserViewModel
    @ObservedObject var userAppViewModel: UserAppViewModel
    
    init(id: String, userAppViewModel: UserAppViewModel, userViewModel: UserViewModel) {
        self.id = id
        self.userAppViewModel = userAppViewModel
        self.userViewModel = userViewModel
    }
    
    var body: some View {
        
        VStack {
            Text(userAppViewModel.status)
        }.onAppear(perform: {
            **userAppViewModel.getDetails**(id: id)
            
        })
    }
    
}

每当执行此语句userAppViewModel.getDetails时，用户会来到 UserAppView，但是当收到 getDetails 的响应时，它会自动转到 ConnectView。

从机密的角度来看，我已经删除了大部分代码，但这段代码将解释原因和错误。请查看代码并帮助我。