swiftui test 1

Test1.swift

struct EventDetailView: View {
    let id: Int
    
    @State private var isEditing: Bool = false
    
    var body: some View {
        ZStack {
            HStack {
                VStack {
                    List {
                        Text("Hello detail \(id)")
                    }
                    .navigationBarTitle("detail")
                    .navigationBarItems(trailing: navigationBarButton())
                }
            }
        }
    }
    
    private func navigationBarButton() -> some View {
        return self.isEditing ?
            AnyView(Button("Cancel") {
                self.isEditing = false
            })
            :
            AnyView(Button("Edit") {
                self.isEditing.toggle()
            })
    }
}

struct Event: Identifiable {
    var id: Int
}

struct ContentView: View {
    @State private var isPlaying = false
    @State private var showingAddEventView = false
    
    private let theDay = "hello"
    
    let events: [Event] = [
        .init(id: 1),
        .init(id: 2)
    ]
    
    var body: some View {
        NavigationView {
            ZStack {
                List {
                    ForEach(self.events) { event in
                        NavigationLink(destination:
                            EventDetailView(id: event.id)
                        ) {
                            Text("row")
                        }
                    }
                }
                .navigationBarTitle(self.theDay)
                .navigationBarItems(trailing:
                    Button (action: {
                        self.showingAddEventView.toggle()
                    }) {
                        Image(systemName: "square.and.pencil")
                    }
                )
            }
        }
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}