ios - SwiftUI 具有 @Environment(\.presentationMode) 用于消除视图行为不端

Question

我有一个@Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>基于围绕某些逻辑的已发布值的自定义关闭操作的视图，如下所示：

.onAppear(perform: {
            viewModel.cancellable = viewModel.$shouldPopBack.sink(receiveValue: { shouldPopBackToHome in
                if shouldPopBackToHome {
                    presentationMode.wrappedValue.dismiss()
                }
            })
        })

此视图还有另一个选项来显示工作表

Button(action: {
            shouldNavigateToQRCodeScanner = true
        }, label: {
            Text("Scan QR code")
                .padding(.horizontal)
        }).sheet(isPresented: $shouldNavigateToQRCodeScanner, content: {
            QRCodeScannerView()
        })

@Environment(\.presentationMode)这里的问题是当我QRCodeScannerView被初始化两次时，当我删除presentationMode时它工作正常。

---

更新 我在一个测试项目中尝试了同样的行为，它是一样的

struct ContentView: View {

@Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>
@State var isPresentd: Bool = false

var body: some View {
    NavigationView {
        Button(action: {
            isPresentd = true
        }, label: {
            Text("Navigate to Second View")
        })
        .sheet(isPresented: $isPresentd, content: {
                SecondView()
            })
    }
}

}
struct SecondView: View {

init() {
    print("Initialized")
}

var body: some View {
    Text("Second View")
}
}

它有同样的问题