Adding Segmented Style Picker to SwiftUI's NavigationView

Question

The question is as simple as in the title. I am trying to put a Picker which has the style of SegmentedPickerStyle to NavigationBar in SwiftUI. It is just like the native Phone application's history page. The image is below

I have looked for Google and Github for example projects, libraries or any tutorials and no luck. I think if nativa apps and WhatsApp for example has it, then it should be possible. Any help would be appreciated.

Answer 1

You can put a Picker directly into .navigationBarItems.

The only trouble I'm having is getting the Picker to be centered. (Just to show that a Picker can indeed be in the Navigation Bar I put together a kind of hacky solution with frame and Geometry Reader. You'll need to find a proper solution to centering.)

struct ContentView: View {
    @State private var choices = ["All", "Missed"]
    @State private var choice = 0

    @State private var contacts = [("Anna Lisa Moreno", "9:40 AM"), ("Justin Shumaker", "9:35 AM")]

    var body: some View {
        GeometryReader { geometry in
            NavigationView {
                List {
                    ForEach(self.contacts, id: \.self.0) { (contact, time) in
                        ContactView(name: contact, time: time)
                    }
                    .onDelete(perform: self.deleteItems)
                }
                .navigationBarTitle("Recents")
                .navigationBarItems(
                    leading:
                    HStack {
                        Button("Clear") {
                            // do stuff
                        }
                        Picker(selection: self.$choice, label: Text("Pick One")) {
                            ForEach(0 ..< self.choices.count) {
                                Text(self.choices[$0])
                            }
                        }
                        .frame(width: 130)
                        .pickerStyle(SegmentedPickerStyle())
                            .padding(.leading, (geometry.size.width / 2.0) - 130)
                    },
                trailing: EditButton())
            }
        }
    }

    func deleteItems(at offsets: IndexSet) {
        contacts.remove(atOffsets: offsets)
    }

}

struct ContactView: View {
    var name: String
    var time: String

    var body: some View {
        HStack {
            VStack {
                Image(systemName: "phone.fill.arrow.up.right")
                .font(.headline)
                .foregroundColor(.secondary)
                Text("")
            }
            VStack(alignment: .leading) {
                Text(self.name)
                    .font(.headline)
                Text("iPhone")
                    .foregroundColor(.secondary)
            }
            Spacer()
            Text(self.time)
                .foregroundColor(.secondary)
        }
    }
}