Thread 1: "Layout requested for visible navigation bar, <SwiftUI.UIKitNavigationBar: 0x107123e70; baseClass = UINavigationBar; frame = (0 53.6667; 393 44); opaque = NO; autoresize = W; layer = <CALayer: 0x6000002ba820>> delegate=0x1080dd600, when the top item belongs to a different navigation bar. topItem = <UINavigationItem: 0x10712d230> style=navigator leftItemsSupplementBackButton trailingItemGroups=0x600000ca5f80 largeTitleDisplayMode=never, navigation bar = <SwiftUI.UIKitNavigationBar: 0x107012b50; baseClass = UINavigationBar; frame = (0 53.6667; 393 44); opaque = NO; autoresize = W; layer = <CALayer: 0x6000002d0a80>> delegate=0x107918400, possibly from a client attempt to nest wrapped navigation controllers."
线程 1：“请求可见导航栏的布局，<SwiftUI.UIKitNavigationBar：0x107123e70；baseClass = UINavigationBar；frame =（0 53.6667；393 44）；opaque = NO；autoresize = W；layer = <CALayer：0x6000002ba820>> delegate = 0x1080dd600，当顶部项目属于另一个导航栏时。帧 = (0 53.6667 ; 393 44); opaque = NO; autoresize = W; layer = <CALayer: 0x6000002d0a80>> delegate=0x107918400，可能来自客户端尝试嵌套的导航控制器。
The error message "Layout requested for visible navigation bar... when the top item belongs to a different navigation bar" typically arises in SwiftUI when there are issues with how navigation bars are being managed, particularly when using nested navigation stacks or improperly configured navigation views. Here are some strategies to address this problem:
当导航栏的管理方式存在问题时，特别是在使用嵌套导航堆栈或不正确配置的导航时，SwiftUI 中通常会出现错误消息“可见导航栏请求布局...当顶部项目属于不同的导航栏时”意见。以下是解决此问题的一些策略：
Solutions to the Navigation Bar Error
导航栏错误的解决方法
Avoid Nested Navigation Views
避免嵌套导航视图:
Ensure that you are not nesting NavigationView or NavigationStack within each other. SwiftUI does not handle nested navigation controllers well, which can lead to conflicts. Instead, use a single NavigationStack for your entire view hierarchy.
确保 NavigationView 或 NavigationStack 没有相互嵌套。 SwiftUI 不能很好地处理嵌套导航控制器，这可能会导致冲突。相反，对整个视图层次结构使用单个 NavigationStack 。
Check Navigation Item Configuration
检查导航项配置:
Make sure that the UINavigationItem associated with your views is correctly set up. If you are pushing new views onto the stack, ensure that the previous view's navigation items are properly cleared or reset before pushing a new view.
确保与您的视图关联的 UINavigationItem 设置正确。如果要将新视图推送到堆栈中，请确保在推送新视图之前正确清除或重置前一个视图的导航项。
Use .navigationBarHidden() Properly 正确使用 .navigationBarHidden() :
If you want to hide the navigation bar, use .navigationBarHidden(true) on the view that should not display it. However, be cautious about when and where you apply this modifier, as hiding the navigation bar while transitioning between views can cause layout issues.
如果要隐藏导航栏，请在不应显示导航栏的视图上使用 .navigationBarHidden(true) 。但是，请谨慎应用此修饰符的时间和地点，因为在视图之间转换时隐藏导航栏可能会导致布局问题。
Delay Navigation Changes 延迟导航更改:
If you are changing navigation items during an animation (e.g., pushing a new view), consider delaying these changes until the animation completes. This can prevent layout requests from conflicting with ongoing animations.
如果您在动画期间更改导航项（例如，推送新视图），请考虑延迟这些更改，直到动画完成。这可以防止布局请求与正在进行的动画发生冲突。
Implement .onAppear and .onDisappear
实现 .onAppear 和 .onDisappear :
Utilize .onAppear and .onDisappear modifiers to manage visibility and state changes of your navigation bar. For example, you can hide the navigation bar in .onDisappear of the current view and show it again in .onAppear of the next view.
利用 .onAppear 和 .onDisappear 修饰符来管理导航栏的可见性和状态更改。例如，您可以在当前视图的 .onDisappear 中隐藏导航栏，并在下一个视图的 .onAppear 中再次显示它。
Debugging Layout Issues 调试布局问题:
Temporarily simplify your view hierarchy by removing components until the error disappears, then gradually reintroduce them to identify what might be causing the conflict.
通过删除组件来暂时简化视图层次结构，直到错误消失，然后逐渐重新引入它们以识别可能导致冲突的原因。
Update Xcode and iOS 更新 Xcode 和 iOS:
Ensure that you are using the latest version of Xcode and targeting a compatible iOS version. Sometimes, bugs in earlier versions can lead to unexpected behavior in SwiftUI.
确保您使用的是最新版本的 Xcode 并面向兼容的 iOS 版本。有时，早期版本中的错误可能会导致 SwiftUI 中出现意外行为。
Use Custom Back Buttons 使用自定义后退按钮:
If using custom back buttons, ensure they correctly handle navigation without conflicting with the default behavior of NavigationLink. You may need to manage state manually if you're overriding default navigation actions.
如果使用自定义后退按钮，请确保它们正确处理导航，而不与 NavigationLink 的默认行为发生冲突。如果您要覆盖默认导航操作，您可能需要手动管理状态。
File a Bug Report 提交错误报告:
If this issue persists despite following best practices, consider filing a bug report with Apple through their Feedback Assistant, especially if you suspect it might be a bug in SwiftUI itself.
如果尽管遵循了最佳实践，此问题仍然存在，请考虑通过 Apple 的反馈助手提交错误报告，特别是如果您怀疑这可能是 SwiftUI 本身的错误。
