SwiftUI NavigationView, going back if NavigationLink is inside a NavigationBarItem - swiftui-navigationlink

Question

As there are some problems with iOS 13.4 and Xcode 11.4 with presentationMode.wrappedValue.dismiss() I am looking for an alternative approach to go back programmatically. I found this solution from MScottWaller:
iOS SwiftUI: pop or dismiss view programmatically
Unfortunately, in my case it does not work:
struct MasterView: View {
#State private var showDetail = false
var body: some View {
VStack {
Text("MasterView")
.navigationBarItems(trailing: HStack {
NavigationLink(destination: DetailView(showSelf: $showDetail), isActive: $showDetail) {
Image(systemName: "tag")
.padding(.leading, 4)
}
})
}
}
}
struct DetailView: View {
#Binding var showSelf: Bool
var body: some View {
Button(action: {
self.showSelf = false
}) {
Text("Pop")
}
}
}
If the NavigationLink is inside a navigationBarItem, I can't go back from my DetailView. I don't know if it is a bug or there are other reasons why NavigationLink does not work in the same way inside a navigationBarItem.
As a workaround I use this variant with a empty NavigationLink inside the view. It works, but I don't like this:
struct MasterView: View {
#State private var showDetail = false
var body: some View {
VStack {
Text("MasterView")
NavigationLink(destination: DetailView(showSelf: $showDetail), isActive: $showDetail) {
EmptyView()
}
.navigationBarItems(trailing: HStack {
Button(action: { self.showDetail.toggle() }) {
Image(systemName: "tag")
.padding(.leading, 4)
}
})
}
}
}
Any ideas why the NavigationLink does not correct work inside a navigationBarItem?

Answer 1

It's an iOS bug.
https://forums.developer.apple.com/thread/125937
The work around is to toggle a NavigationLink hidden outside of nav bar:
struct Parent: View {
#State private var showingChildView = false
var body: some View {
NavigationView {
VStack {
Text("Hello World")
NavigationLink(destination: Child(),
isActive: self.$showingChildView)
{ Text("HiddenLink").hidden() }
}
.navigationBarItems(trailing: Button(action:{ self.showingChildView = true }) { Text("Next") })
}
}
}