Swift：成功注册后无法浏览用户吗？

如何解决Swift：成功注册后无法浏览用户吗？

我有一个登录和注册视图。如果用户成功登录，则需要通过NavigationLink将其带到homeMainView，如果需要注册，则将在表单中显示注册视图。登录和注册时的身份验证都可以正常工作，但是当显示注册表并且用户成功登录时，我无法从显示的表中将Navlink的视图获取到homeMainView。该视图可以从登录视图中正常浏览，但不能从注册中导航。我尝试了几种不同的方法，但没有成功。这是我的代码

struct LoginView: View {

@State private var email = ""
@State private var password = ""
@State private var formOffset: CGFloat = 0
@State private var presentSignupSheet = false
@State private var presentPasswordRecoverySheet = false
@State var isNavigationBarHidden: Bool = true

@State var isLinkActive = false // <- add here


var body: some View {
     NavigationView { // <- wrap in the `NavigationView`
    vstack(spacing: 40) {
        
        vstack {
            LCTextfield(value: self.$email,placeholder: "Email",icon: Image(systemName: "at"),onEditingChanged: { flag in
                withAnimation {
                    self.formOffset = flag ? -150 : 0
                }
            })
            LCTextfield(value: self.$password,placeholder: "Password",icon: Image(systemName: "lock"),isSecure: true)
            LCButton(text: "Login") {
                self.handleLogin(username: self.email,password: self.password)
            }
        }
        
        Button(action: {
            self.presentSignupSheet.toggle()
        }) {
          HStack {
            Text("Don't have an account? Sign up.").accentColor(Color.PrimaryColor)
              }
          }.sheet(isPresented: self.$presentSignupSheet) {
              SignupView()
          }
        
        Button(action: {
            self.presentPasswordRecoverySheet.toggle()
        }) {
          HStack {
            Text("Forgot your password?").accentColor(Color.PrimaryColor)
              }
          }.sheet(isPresented: self.$presentPasswordRecoverySheet) {
            RecoverPasswordView(presentPasswordRecoverySheet: self.$presentPasswordRecoverySheet)
          }

    }.padding().offset(y: self.formOffset)
        .background(Color.sNowColor).edgesIgnoringSafeArea(.all)


    .background( // add a hidden `NavigationLink` in the background
        NavigationLink(destination: homeMainView(),isActive: $isLinkActive) {
            EmptyView()
        }
        .hidden()
    )

    
  }.navigationBarTitle("",displayMode: .inline) // optionally set title
   .navigationBarHidden(self.isNavigationBarHidden)
   .onAppear {
               self.isNavigationBarHidden = true
     }

}

单击“注册为”按钮时，将显示注册视图

struct SignupView: View {

@State private var fname = ""
@State private var lname = ""

@State private var email = ""
@State private var password = ""
@State private var confirmedPassword = ""
@Environment(\.presentationMode) var presentationMode

@State private var formOffset: CGFloat = 0
@State var isLinkActive = false // <- add here

var body: some View {
    
    vstack(spacing: 40) {
   
        vstack {
            HStack {
                LCTextfield(value: self.$fname,placeholder: "First Name")
                LCTextfield(value: self.$lname,placeholder: "Last Name")
                
            }
            
            
            LCTextfield(value: self.$email,onEditingChanged: { flag in
                withAnimation {
                    self.formOffset = flag ? -150 : 0
                }
                
            })
            LCTextfield(value: self.$password,isSecure: true)
            LCButton(text: "Sign up") {
                self.handleSignUp(username: self.email,password: self.password)
            }
        }
        
        Button(action: {
        }) {
          HStack {
            Text("Already have an account?").accentColor(Color.accentColor)
              }
          }
        
   }.padding().offset(y: self.formOffset)
    .navigationBarTitle("",displayMode: .inline) // optionally set title
           .navigationBarHidden(true)
           .background( // add a hidden `NavigationLink` in the background
               NavigationLink(destination: homeMainView(),isActive: $isLinkActive) {
                   EmptyView()
               }
               .hidden()
           )
    
    .background(Color.sNowColor).edgesIgnoringSafeArea(.all)
  }



  func handleSignUp(username: String,password: String) {
         app.usernamePasswordProviderClient().registerEmail(email,password: password,completion: { (error) in
            // Completion handlers are not necessarily called on the UI thread.
            // This call to dispatchQueue.main.sync ensures that any changes to the UI,print("Signup successful!")
                
                
         
                
                // Registering just registers. Now we need to sign in,but we can reuse the existing username and password.

                self.presentationMode.wrappedValue.dismiss()
                LoginView().handleLogin(username: self.email,password: self.password)
                self.isLinkActive = true // <- activate the `NavigationLink`

            }
        })
    }

成功注册用户后，将用户导航到homeMainView的最佳方法是什么？