Navigation Link leading to gray screen in Swift UI

Question

I am new to SwiftUI and am having a bug where my entire screen turns gray when I use too many Navigation Links. I cannot find any solutions while researching the bug. I am running the project on the newest version of Xcode 12.4. My current setup is to have 2 different swiftUI Views, each containing a Navigation Link to the other.

This is what it looks like

Code:

PageOne.swift

struct PageOne: View {
    var body: some View {
        NavigationView {
            VStack {
                Text("This is page 1")
                    .font(.system(size: 36, weight: .bold))
                    .padding(.bottom)
                
                NavigationLink(
                    destination: PageTwo(),
                    label: {
                        VStack {
                            Text("Go to Page 2")
                                .font(.system(size: 24, weight: .medium))
                                .foregroundColor(.white)
                                .frame(width: 200, height: 50, alignment: .center)
                                .background(Color.blue)
                                .cornerRadius(12)
                            
                        }
                    })
            }
        }
        .navigationBarHidden(true)
        .navigationBarBackButtonHidden(true)
    }
}

PageTwo.swift

struct PageTwo: View {
    var body: some View {
        NavigationView {
            VStack {
                Text("This is page 2")
                    .font(.system(size: 36, weight: .bold))
                    .padding(.bottom)
                
                NavigationLink(
                    destination: PageOne(),
                    label: {
                        VStack {
                            Text("Go to Page 1")
                                .font(.system(size: 24, weight: .medium))
                                .foregroundColor(.white)
                                .frame(width: 200, height: 50, alignment: .center)
                                .background(Color.blue)
                                .cornerRadius(12)
                            
                        }
                    })
            }
        }
        .navigationBarHidden(true)
        .navigationBarBackButtonHidden(true)
    }
}

Project file

Does this answer your question https://stackoverflow.com/a/61707588/12299030? — Asperi, Feb 23 '21 at 04:44
Same issue - doing this helped me: https://stackoverflow.com/questions/64868119/swiftui-navigation-view-opening-with-back-button-and-half-grey-screen-weird — Sachin Katyal, Mar 19 '21 at 03:04

score 3 · Accepted Answer · answered Feb 23 '21 at 11:55

You should only have one NavigationView in the view hierarchy.

Try creating one NavigationView at the root level:

struct ContentView: View {
    var body: some View {
        NavigationView {
            PageOne()
                .navigationBarHidden(true)
                .navigationBarBackButtonHidden(true)
        }
    }
}

and then remove NavigationView from subviews:

struct PageOne: View {
    var body: some View {
        VStack {
            Text("This is page 1")
                .font(.system(size: 36, weight: .bold))
                .padding(.bottom)
            
            NavigationLink(
                destination: PageTwo(),
                label: {
                    VStack {
                        Text("Go to Page 2")
                            .font(.system(size: 24, weight: .medium))
                            .foregroundColor(.white)
                            .frame(width: 200, height: 50, alignment: .center)
                            .background(Color.blue)
                            .cornerRadius(12)
                        
                    }
                })
        }
        .navigationBarHidden(true)
        .navigationBarBackButtonHidden(true)
    }
}

struct PageTwo: View {
    var body: some View {
        VStack {
            Text("This is page 2")
                .font(.system(size: 36, weight: .bold))
                .padding(.bottom)
            
            NavigationLink(
                destination: PageOne(),
                label: {
                    VStack {
                        Text("Go to Page 1")
                            .font(.system(size: 24, weight: .medium))
                            .foregroundColor(.white)
                            .frame(width: 200, height: 50, alignment: .center)
                            .background(Color.blue)
                            .cornerRadius(12)
                        
                    }
                })
        }
        .navigationBarHidden(true)
        .navigationBarBackButtonHidden(true)
    }
}

Navigation Link leading to gray screen in Swift UI

1 Answers1