在此示例中，当我在屏幕上拖动时，为什么LabelViewRepresentable在每次“ updateUIView”调用之前都被重新初始化？如果我将计数器设为@State属性而不是@EnvironmentObject属性，则它只会初始化一次，就像我期望的那样。

import SwiftUI

class Counter: ObservableObject {
  @Published var count = 0
}

struct CounterView: View {
  @EnvironmentObject var counter: Counter

  var body: some View {
    LabelViewRepresentable(count: $counter.count)
      .gesture(DragGesture().onChanged({ _ in
        self.counter.count += 1
      }))
  }
}

struct LabelViewRepresentable: UIViewRepresentable {
  @Binding var count: Int
  private var view: UILabel

  init(count: Binding<Int>) {
    print("init")

    let label = UILabel()
    label.text = "0"
    self.view = label
    self._count = count
  }

  func makeUIView(context: UIViewRepresentableContext<LabelViewRepresentable>) -> UILabel {
    print("makeUIView")
    return view
  }

  func updateUIView(_ uiView: UILabel,context: UIViewRepresentableContext<LabelViewRepresentable>) {
    print("updateUIView")
    view.text = "\(count)"
  }
}