导航栏隐藏在 SwiftUI 中不起作用 [英] Navigation Bar hide is not working in SwiftUI

问题描述

我有三个视图.我想隐藏第三个视图中的导航栏.即使我给 .navigationBarHidden(true) 导航栏正在显示！

I'm having Three Views. I want to hide the navigation bar in the third View. Even if I give .navigationBarHidden(true) the navigation bar is displaying!

我找不到我做错的地方.我附上了我的代码和下面的截图.

I couldn't find where I'm doing wrong. I've attached my code and the resulting screenshot below.

Xcode 版本 - 11.1

Xcode version - 11.1

struct ContentViewOne: View {
    var body: some View {
        NavigationView {
            ZStack {
                
                Color.yellow.edgesIgnoringSafeArea(.all)
                VStack(spacing: 20) {
                    Text("View One")
                    
                    NavigationLink(destination: ContentViewTwo()) {
                        Text("Navigate to View Two")
                            .foregroundColor(.white)
                            .padding()
                            .background(Color.red)
                    }
                }
            }
            .navigationBarTitle("View One")
        }
    }
}

struct ContentViewTwo: View {
    var body: some View {
        
        ZStack {
            Color.green.edgesIgnoringSafeArea(.all)
            VStack(spacing: 20) {
                Text("View Two")
                NavigationLink(destination: ContentViewThree()) {
                    Text("Navigate to View Three")
                        .foregroundColor(.white)
                        .padding()
                        .background(Color.red)
                }
            }
        }
        .navigationBarTitle("View Two")
    }
}

struct ContentViewThree: View {
    var body: some View {
        ZStack {
            Color.gray.edgesIgnoringSafeArea(.all)
            Text("View Three")
        }
        .navigationBarTitle("View Three")
        .navigationBarHidden(true)
        .navigationBarBackButtonHidden(true)
    }
}

推荐答案

注意:(出于某种原因它在某些情况下有效)SwiftUI 要求您需要 .navigationBarTitle 使 .navigationBarHidden 正常工作.

NOTE: (For some reason it works in some cases) SwiftUI requires that you need to .navigationBarTitle for .navigationBarHidden to work properly.

NavigationView {
    ScrollView() {
     ......
    }.  
    .navigationBarTitle("") //this must be empty
    .navigationBarHidden(true)
    .navigationBarBackButtonHidden(true)
}

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