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How do you guys deal with @ObservedObject in iOS 13? I'm having issues with this because every change on state recreates my ViewModels and I can't use @StateObj

• superzadeh 6y ago
  ohhh, that's a tough one. @StateObject is definitely making things easier, but the trick we've used for now (we’re still targeting iOS 13) is to wrap ViewModels in @State in a parent view, and pass it down to your view as an @EnvironmentObject. When the subview changes/re-renders, your ViewModel stay the same on the parent view and is not recreated as it is a @State; and your subview can still listen to @PUublished changes. We've made a generic wrapper for it, and we use almost everywhere: struct ViewModelWrapper<V: View, ViewModel: ObservableObject>: View { private let contentView: V @State private var contentViewModel: ViewModel init(contentView: @autoclosure () -> V, vm: @autoclosure () -> ViewModel) { self._contentViewModel = State(initialValue: vm()) self.contentView = contentView() } var body: some View { contentView .environmentObject(contentViewModel) } }