I have prepared a simple example with three levels:

struct Element: Identifiable {
    let id = UUID()
    let text: String
    init(text: String) {
        self.text = text
    }
}

struct FirstView: View {
    @State var elements = [Element(text: "a"), Element(text: "b")]
    var body: some View {
        NavigationView {
            List(elements) { element in
                NavigationLink {
                    SecondView()
                } label: {
                    VStack(alignment: .leading, spacing: 3, content: {
                        Text(element.text)
                            .font(.system(size: 12))
                            .foregroundColor(.white)
                    })
                }
            }
            .navigationTitle("First")
        }
    }
}

struct SecondView: View {
    @State var elements = [Element(text: "1"), Element(text: "2")]
    var body: some View {
        NavigationView {
            List(elements) { element in
                NavigationLink {
                    ThirdView()
                } label: {
                    VStack(alignment: .leading, spacing: 3, content: {
                        Text(element.text)
                            .font(.system(size: 12))
                            .foregroundColor(.white)
                    })
                }
            }
            .navigationTitle("Second")
        }
    }
}

struct ThirdView: View {
    @State var elements = [Element(text: " "), Element(text: "-")]
    var body: some View {
        NavigationView {
            List(elements) { element in
                NavigationLink {
                    SecondView()
                } label: {
                    VStack(alignment: .leading, spacing: 3, content: {
                        Text(element.text)
                            .font(.system(size: 12))
                            .foregroundColor(.white)
                    })
                }
            }
            .navigationTitle("Third")
        }
    }
}

And this is what happens in Apple Watch when I go to the next levels:

As you can see for third view,navigation title was not updated. Why?

There is sth wrong with rendering also? When I swipe down second list it ends up like:

CodePudding user response：

You just need to remove NavigationView from around the SecondView and ThirdView, i.e.

struct SecondView: View {
    @State var elements = [Element(text: "1"), Element(text: "2")]
    var body: some View {
        List(elements) { element in
            NavigationLink {
                ThirdView()
            } label: {
                VStack(alignment: .leading, spacing: 3, content: {
                    Text(element.text)
                        .font(.system(size: 12))
                        .foregroundColor(.white)
                })
            }
        }
        .navigationTitle("Second")
    }
}

If you're building for watchOS 9.0 , you should probably use the new NavigationStack