Push View programmatically in callback, SwiftUI

Question

It seems to me that Apple is encouraging us to give up using UIViewController in SwiftUI, but without using view controlelrs, I feel a little bit powerless. Wha

Answer 1

I'm adding some snippets here because I think it simplifies some things and makes reusing navigation links easier:

1. Add View Navigation Extensions

extension View {
    func navigatePush(whenTrue toggle: Binding) -> some View {
        NavigationLink(
            destination: self,
            isActive: toggle
        ) { EmptyView() }
    }

    func navigatePush(when binding: Binding,
                                   matches: H) -> some View {
        NavigationLink(
            destination: self,
            tag: matches,
            selection: Binding(binding)
        ) { EmptyView() }
    }

    func navigatePush(when binding: Binding,
                                   matches: H) -> some View {
        NavigationLink(
            destination: self,
            tag: matches,
            selection: binding
        ) { EmptyView() }
    }
}

Now, you can call on any view (make sure they (or a parent) are in a navigation view)

2. Use at leisure

struct Example: View {
    @State var toggle = false
    @State var tag = 0

    var body: some View {
        NavigationView {
            VStack(alignment: .center, spacing: 24) {
                Text("toggle pushed me")
                    .navigatePush(whenTrue: $toggle)
                Text("tag pushed me (2)")
                    .navigatePush(when: $tag, matches: 2)
                Text("tag pushed me (4)")
                    .navigatePush(when: $tag, matches: 4)

                Button("toggle") {
                    self.toggle = true
                }

                Button("set tag 2") {
                    self.tag = 2
                }

                Button("set tag 4") {
                    self.tag = 4
                }
            }
        }
    }
}