This is so nice! It's always a pain in the ass to do this stuff

swiftuitext.swift

// https://stackoverflow.com/a/72067001/1492368

struct TextFieldTest: View {
    @FocusState private var emailFocused: Bool
    @FocusState private var passwordFocused: Bool
    @State private var username: String = ""
    @State private var password: String = ""


    var body: some View {
        TextField("User name (email address)", text: $username)
            .focused($emailFocused)
            .onSubmit {
                passwordFocused = true
            }

        TextField("Enter Password", text: $password)
            .focused($passwordFocused)
    }

}