Swift 订阅视图之外的绑定值

我需要在SwiftUI中使用UITextField，并且我可以使用绑定变量将UITextField中的文本更改发布到我的视图模型.

但我做不到opposite米.我希望能够在我在ViewModel中发布的变量发生更改时更新UITextfield.因为有时我希望能够用我从互联网上获取的数据自动填充文本字段.

struct Test: View {
    @StateObject private var vm = TestVM()
    var body: some View {
        UIKitField(text: $vm.text)
            .onAppear {
                vm.fetchData()
            }
    }
}

class TestVM: ObservableObject {
    @Published var text = ""

    func fetchData() {
        text = "abc" // here I want textfield's text to be updated.
    }
}

struct UIKitField: UIViewRepresentable {
    @Binding var text: String

    private let textField = UITextField()

    func makeUIView(context: Context) -> UITextField {
        return textField
    }

    func updateUIView(_ uiView: UITextField, context: Context) {}

    func makeCoordinator() -> Coordinator {
        Coordinator(self)
    }

    final class Coordinator: NSObject {
        private let parent: UIKitField
        init(_ parent: UIKitField) {
            self.parent = parent
            super.init()
            self.parent.textField.addTarget(self, action: #selector(editingChanged), for: .editingChanged)
        }

        @objc func editingChanged() {
            parent.text = parent.textField.text!
        }
    }
}