abgwtpB

.swift

struct InsideView: View {
  @Binding var rect: [CGRect]
  var body: some View {
    return GeometryReader { geometry in
      Rectangle()
        .fill(Color.yellow)
        .frame(width: 64, height: 32, alignment: .center)
        .opacity(0.5)
        .onAppear {
          self.rect.append(geometry.frame(in: .global))
      }
    }
  }
}