Swiftui 在“中显示来自选项卡的警报”；“更多”；溢出将我返回到上一个视图

我有一个简单的操作，在使用TabView的SwiftUI应用程序中显示警报。然而，每当我第一次从一个被推到“更多”溢出屏幕的选项卡显示警报时，它会立即将我带回到之前打开的任何“主选项卡”（非更多）

这只在我第一次显示警报时发生，之后它会按预期工作。但是，在所有后续警报（当其行为正常时）中，我在控制台中获得此输出

2021-01-07 12:19:49.289546-0700 Test App[48718:25806605] setViewControllers:animated: called on <UIMoreNavigationController 0x7fcecf826c00> while an existing transition or presentation is occurring; the navigation stack will not be updated.

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一种可能的解决方法是在单击按钮时保持选择：

struct ContentView: View {
    let textTabs = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight"]

    @State private var selection = "Two" // store selection as a `@State`
    
    var body: some View {
        TabView(selection: $selection) {
            ForEach(textTabs, id: \.self) { name in
                Text(name)
                    .tabItem {
                        Image(systemName: "circle")
                        Text(name)
                    }
            }

            ButtonTab(selection: $selection)
                .tabItem {
                    Image(systemName: "face.smiling")
                    Text("Button")
                }
                .tag("Button") // add tag for `selection`
        }
    }
}

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对于警报和应用程序内购买弹出窗口来说，这都起到了作用。奇怪的是它的需要，但谢谢你的解决办法！

struct ContentView: View {
    let textTabs = ["One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight"]

    @State private var selection = "Two" // store selection as a `@State`
    
    var body: some View {
        TabView(selection: $selection) {
            ForEach(textTabs, id: \.self) { name in
                Text(name)
                    .tabItem {
                        Image(systemName: "circle")
                        Text(name)
                    }
            }

            ButtonTab(selection: $selection)
                .tabItem {
                    Image(systemName: "face.smiling")
                    Text("Button")
                }
                .tag("Button") // add tag for `selection`
        }
    }
}

struct ButtonTab: View {
    @State private var showAlert = false
    @Binding var selection: String // pass selection as a `@Binding`

    var body: some View {
        VStack {
            Button("show alert") {
                showAlert = true
                selection = "Button" // (force) set `selection` here
            }
        }
        .alert(isPresented: $showAlert) {
            Alert(title: Text("hello"),
                  dismissButton: .default(Text("ok")))
        }
    }
}