Update TabView and move to Home View after login - swiftui

Question

I have the fllowing TabViews in the ContentView. For the onAppear, it works fine. However, I am trying also to reload the tabs and move to the home after the user login from LoginView.
Following is the code of the ContentView
// ContentView.swift
// Matjri
//
//
import SwiftUI
struct ContentView: View {
#ObservedObject var user = User()
var body: some View {
HStack{
if (user.tokenIsActive) {
TabView {
HomeView()
.tabItem {
VStack {
Image(systemName: "house")
Text("Home")
}
}.tag(0)
UserPostsView()
.tabItem {
VStack {
Image(systemName: "person.fill")
Text("Me")
}
}.tag(1)
NewPostView()
.tabItem {
VStack {
Image(systemName: "plus")
Text("Add")
}
}.tag(2)
SearchView()
.tabItem {
VStack{
Image(systemName: "magnifyingglass")
Text("Search")
}
}.tag(3)
}
} else {
TabView {
HomeView()
.tabItem {
VStack {
Image(systemName: "house")
Text("Home")
}
}.tag(0)
LoginView()
.tabItem {
VStack {
Image(systemName: "person.fill")
Text("Me")
}
}.tag(1)
SearchView()
.tabItem{
VStack{
Image(systemName: "magnifyingglass")
Text("Search")
}
}.tag(2)
}
}
}
.onAppear() {
self.checkLoginValidity()
}
}
func checkLoginValidity() {
let userLogged = UserDefaults.standard.object(forKey: "userIsLogged") as? Bool ?? false
if (userLogged) {
let existinLogin = UserDefaults.standard.object(forKey: "loginExpiry") as! Date
if (existinLogin > Date().addingTimeInterval(86400 * 2)){
self.user.tokenIsActive = true
} else {
self.user.tokenIsActive = false
}
} else {
self.user.tokenIsActive = false
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
When the user login from the LoginView, I set the tokenIsActive to true
struct LoginView: View {
#ObservedObject var user = User()
........
//Login successful
self.user.tokenIsActive = true
TabView is not updating. How can I achieve this and I move the user to the homeview after login.

Answer 1

It is used different User() instances in ContentView and LoginView. Here is a solution:
struct LoginView: View {
#ObservedObject var user: User // << only declare
and here
LoginView(user: self.user) // << inject own user instance
.tabItem {
VStack {
Image(systemName: "person.fill")
Text("Me")
}
}.tag(1)