SwiftUI hiding a navigation bar only when looking at ContentView - swift

Question

I have a Content file and am hiding the navigation bar because it takes up space and pushes elements down. One of the buttons in the ContentView redirects (using a navigation link) to another view. In this other view, the navigationBar is still hidden....for simplicity sake, I'll cut out some of the code from ContentView:
//this is the view that looks "fine" (i.e. the navigation bar takes up no space)
struct ContentView: View {
#State private var isPresentedSettings = false
var body: some View {
NavigationView {
ZStack {
VStack {
SettingsButton(isPresentedSettings: $isPresentedSettings)
}
}.navigationBarTitle("").navigationBarHidden(true)
}
}
}
//this is the button that pulls up the settings page view
struct SettingsButton: View {
#Binding var isPresentedSettings: Bool
var body: some View {
NavigationLink (destination: SettingsPageView(isPresentedSettings:
self.$isPresentedSettings)) {
Button(action: { self.isPresentedSettings.toggle() }, label: { Text("Button") })
}
}
}
//This is the view that should have a navigationbar but it doesn't
struct SettingsPageView: View {
#Binding var isPresentedSettings: Bool
var body: some View {
NavigationView {
VStack {
Text("This is a view")
}.navigationBarTitle("Settings", displayMode: .inline)
}
}
}
Also...there may have been typos because I just copied the code over from another computer. Sorry and thank you in advance!

Answer 1

Firstly, you don't need to have this isPresentedSettings variable for presenting a NavigationLink.
NavigationLink(destination: SettingsPageView()) {
Text("Button")
}
And there should be only one NavigationView in your view hierarchy.
This is how your final code can look like:
struct ContentView: View {
#State private var navBarHidden = true
var body: some View {
NavigationView {
ZStack {
VStack {
SettingsButton(navBarHidden: $navBarHidden)
}
}
.navigationBarHidden(navBarHidden)
}
}
}
struct SettingsButton: View {
#Binding var navBarHidden: Bool
var body: some View {
NavigationLink(destination: SettingsPageView(navBarHidden: $navBarHidden)) {
Text("Show View")
}
}
}
struct SettingsPageView: View {
#Binding var navBarHidden: Bool
var body: some View {
VStack {
Text("This is a view")
}
.navigationBarTitle("Settings", displayMode: .inline)
.onAppear {
self.navBarHidden = false
}
.onDisappear {
self.navBarHidden = true
}
}
}