Collapse a doubleColumn NavigationView detail in SwiftUI like with collapsed on UISplitViewController?

Question

So when I make a list in SwiftUI, I get the master-detail split view for \"free\".

So for instance with this:

import SwiftUI

struct ContentView : Vi         


        

Answer 1

For current version (iOS 13.0-13.3.x), you can use my code. I use a UIViewUpdater to access the underlaying UIView and its UIViewController to adjust the bar item.

I think the UIViewUpdater way to solve this problem is the most Swifty and robust way, and you can use it to access and modify other UIView, UIViewController related UIKit mechanism.

ContentView.swift

import SwiftUI

struct ContentView : View {
    var people = ["Angela", "Juan", "Yeji"]

    var body: some View {
        NavigationView {
            List {
                ForEach(people, id: \.self) { person in
                    NavigationLink(destination: DetailView()) { Text(person) }
                }
            }

            InitialDetailView()

        }
    }
}

struct DetailView : View {
    var body: some View {
        Text("Hello!")
    }
}

struct InitialDetailView : View {
    var body: some View {
        NavigationView {
            Text("