在 SwiftUI 中使用 NavigationLink 导航时如何隐藏 TabBar？

Question

I have a TabView with 2 tabs in it, each tab containing a NavigationView. I need to hide the TabBar when navigating to another view. One solution would be to place the TabView inside of one NavigationView, but I have to set different properties for each NavigationView.

TabView(selection: $selectedTab, content: {
            NavigationView {
                VStack {
                    NavigationLink(destination: Text("SecondView Tab1")) {
                        Text("Click")
                    }
                }
            }.tabItem {
                Text("ONE")
            }.tag(0)

            NavigationView {
                VStack {
                    NavigationLink(destination: Text("SecondView Tab2")) {
                        Text("Click")
                    }
                }
            }.tabItem {
                Text("TWO")
            }.tag(1)

        })

PS I am using Xcode 11 Beta 5

Answer 1

A little late but it will work, put your NavigationView before the TabView and the tab buttons are going to be hidden when you use a navigation link in your tabbed views.

NavigationView{
    TabView{
        ...
    }
}

Answer 2

I have a TabView with 2 tabs in it, each tab containing a NavigationView. I need to hide the TabBar when navigating to another view. One solution would be to place the TabView inside of one NavigationView, but I have to set different properties for each NavigationView.

TabView(selection: $selectedTab, content: {
            NavigationView {
                VStack {
                    NavigationLink(destination: Text("SecondView Tab1")) {
                        Text("Click")
                    }
                }
            }.tabItem {
                Text("ONE")
            }.tag(0)

            NavigationView {
                VStack {
                    NavigationLink(destination: Text("SecondView Tab2")) {
                        Text("Click")
                    }
                }
            }.tabItem {
                Text("TWO")
            }.tag(1)

        })

PS I am using Xcode 11 Beta 5

Answer 3

I have same problem for this; And I did the following actions to solve this problem:

1. Use NavigationView Contain a TabView And Hidden the NavigationBar
2. Make a Custom NavigaitonView like this
3. In next view Still hidden NavigationBar

// root tab
NavigationView {
    TabView {
        // some
    }
    .navigationBarTitle(xxx, displayMode: .inline)
    .navigationBarHidden(true)
}

// custom navigation view
@available(iOS 13.0.0, *)
struct MyNavigationView: View {
    var body: some View {
        HStack {
            Spacer()
            Text(some)
            Spacer()
        }
        .frame(height: 44)
    }
}

// this view 
VStack {
                MyNavigationView()
                Image(some)
                    .resizable()
                    .frame(width: 100, height: 100, alignment: .top)
                    .padding(.top, 30)
                Spacer()
                HStack {
                    ClockView()
                    Spacer()
                    NavigationLink(
                        destination: DynamicList(),
                        label: {
                            Image(some)
                        }).navigationBarHidden(true)
                }
                .padding(EdgeInsets(top: 0, leading: 15, bottom: 0, trailing: 15))
                
                Spacer()
            }

// next view
var body: some View {
            VStack {
                List {
                    MyNavigationView()
                    ForEach(date, id: \.self) { model in
                        Text(model)
                    }
                }
                .navigationBarHidden(true)
                .navigationBarTitle(some, displayMode: .inline)
            }
    }

Answer 4

据我所知，如果您将导航视图列为子项，则您无法隐藏标签栏，您的标签栏包含您的导航视图。