工具栏正在删除 NavigationView 中的后退按钮 [英] Toolbar is deleting my back Button in the NavigationView

问题描述

我有一个列表的详细信息视图，我可以从主视图导航到该列表:

I have a Detail view of a list where I navigate to from my main view:

NavigationView {
    ...
    NavigationLink(destination: DetailView()) {
        Text(entity.name ?? "Unknown")
    }
    ...
}

然后在我的 DetailView 中，我可以看到主视图的后退按钮:

Then in my DetailView I can see the back button to my Main view:

struct DetailView: View {
  
    var body: some View {
        Form {
            ...
        }
        .navigationBarTitle("Deatil")
        /*.toolbar {
            ToolbarItem(placement: .primaryAction) {
                
                Button(action: {
                    ...
                }) {
                    Image(systemName: "ellipsis.circle")
                }
                
            }
            
        }*/
    }
}

一切都很好，直到我使用工具栏.然后我只看到工具栏而不是最后一个视图的导航.为什么?通常这应该有效，对吗?

Its all fine till I use the toolbar. Then I only see the toolbar but not the navigation to the last view. Why? Usually this should work, right?

推荐答案

import SwiftUI

struct ToolbarBug: View {
    var body: some View {
        NavigationView {
            NavigationLink(destination: DetailViewToolbarBug()) {
                Text("Unknown")
            }
        }
    }
}
struct DetailViewToolbarBug: View {
    var body: some View {
        VStack{
            NavigationLink(destination: DetailViewToolbarBug()) {
                Text("Unknown")
            }
        Form {
            NavigationLink(destination: DetailViewToolbarBug()) {
                Text("Unknown")
            }
            Text("form text")
        }
        }
        .navigationBarTitle("Deatil")
        .toolbar {
            ToolbarItem(placement: .primaryAction) {
                
                Button(action: {
                    
                }) {
                    Image(systemName: "ellipsis.circle")
                }
            }
        }
    }
}
struct ToolbarBug_Previews: PreviewProvider {
    static var previews: some View {
        ToolbarBug()
    }
}

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