SwiftUI. Present a detail view pushed from the root view as the initial application view - ios

Question

I have two SwiftUI views, the first view has a navigation link to the second view and I want to show the second view that is "pushed" out of the first view, as the initial application view.
This is the behavior of the iOS Notes app, where users see a list of notes as the initial view controller and can return to the folder list with the back navigation button.
Can I implement this with SwiftUI and how?

Answer 1

Here is a simple demo. Prepared & tested with Xcode 11.7 / iOS 13.7
struct ContentView: View {
#State private var isActive = false
var body: some View {
NavigationView {
NavigationLink(destination: Text("Second View"), isActive: $isActive) {
Text("First View")
}
}
.onAppear { self.isActive = true }
}
}

Answer 2

you can add another state variable to hide the first view until the second view appears on the screen.
struct ContentView1: View {
#State private var isActive = false
#State private var showView = false
var body: some View {
NavigationView {
NavigationLink(destination: Text("Second View")
.onAppear {
self.showView = true
},
isActive: $isActive) {
if self.showView {
Text("First View")
} else {
EmptyView()
}
}
}
.onAppear {
self.isActive = true
}
}
}

Answer 3

As mentioned in my comments to another answer, by setting an initial state for a variable that controls the presentation of the second view to true, your ContentView presents this second view as the initial view.
I've tested this using the simulator and on device. This appears to solve your problem and does not present the transition from the first view to the second view to the user - app opens to the second view.
struct ContentView: View {
#State private var isActive = true
var body: some View {
NavigationView {
NavigationLink(destination: Text("Second View"), isActive: $isActive) {
Text("First View")
}
}
}
}

Answer 4

I made my own implementation based on #Asperi and #Mohammad Rahchamani answers.
This implementation allows you to navigate even from a list with multiple navigation links. Tested on Xcode 12 with SwiftUI 2.0.
struct IOSFolderListView: View {
#State var isActive = false
#State var wasViewShown = false
var body: some View {
let list = List {
NavigationLink(destination: Text("SecondView").onAppear {
self.wasViewShown = true
}, isActive: $isActive) {
Text("SecondView")
}
NavigationLink(destination: Text("ThirdView")) {
Text("ThirdView")
}
.onAppear {
self.isActive = false
}
}
if wasViewShown {
list.listStyle(GroupedListStyle())
.navigationBarTitle("FirstView")
.navigationBarItems(leading: Image(systemName: "folder.badge.plus"), trailing: Image(systemName: "square.and.pencil"))
} else {
list.opacity(0)
.onAppear {
self.isActive = true
}
}
}
}