NavigationStack (iOS 16+) shi ne data-driven navigation container na SwiftUI: maimakon turin view controllers a imperatively, kana bind array path na values, sannan stack ɗin ke render allo don kowace value. Data yana gudana ƙasa ta view initializers da environment, kuma sama ta bindings da callbacks.
Kana tuka navigation ta sauya @State path, kuma kana taswirar value types zuwa destination views da navigationDestination.
struct AppView: View {
@State private var path: [Route] = [] // the navigation stack, as data
var body: some View {
NavigationStack(path: $path) {
List(products) { p in
NavigationLink("Open", value: Route.detail(p.id)) // append value
}
.navigationDestination(for: Route.self) { route in
switch route {
case .detail(let id): DetailView(id: id)
}
}
}
}
}
enum Route: Hashable { case detail(Int) }
Saboda path plain data ne, za ka iya deep-link ta saita path = [.detail(42)], ko pop to root da path.removeAll() — navigation ya zama testable, serializable state.
DetailView(id:)), ko raba cross-cutting objects da .environmentObject(...) / @Environment system.@Binding ko yana kiran closure ɗin da parent ya bayar.Hashable.navigationDestination; rijistoci da yawa don type guda suna cin karo da juna.Data-driven navigation yana sa flows kamar deep links, restoration, da "pop allo uku baya" su zama masu sauƙi saboda stack array ne kawai da kake mallaka. Masu tambayoyi suna yin wannan don ganin ko kana model navigation a matsayin state — hanyar SwiftUI ta zamani — maimakon fafata da tsohon imperative NavigationView.
Ɗakin karatu na tambayoyin hira na IT tare da amsoshi cikakke — daga Junior zuwa Senior.
Ba da Gudummawa