How to add button on navigation bar with SwiftUI

Question

I have two structs ContentView.swift

struct ContentView: View {
    var body: some View {
        NavigationView{
            ZStack {
                Color(red: 0.09, green: 0.63, blue: 0.52)
                    .edgesIgnoringSafeArea(.all)

                VStack {
                    Image("flower_logo")
                        .resizable()
                        .aspectRatio(contentMode: .fit)
                        .frame(width: 150.0, height: 150.0)
                        .clipShape(Circle())

                    Text("ScanFlower")
                        .font(Font.custom("Pacifico-Regular", size: 40))
                        .bold()
                        .foregroundColor(.white)

                    Text("DETECT FLOWER SPECIES")
                        .foregroundColor(.white)
                        .font(.system(size: 15))

                    Spacer()
                        .frame(height: 100)

                    NavigationLink(destination: ScanWithCamera()){
                        NavigateButtons(imageName: "camera.fill", text: "Scan with camera")
                    }

                    NavigateButtons(imageName: "photo.fill", text: "Use pictures")
                    NavigateButtons(imageName: "chart.bar.fill", text: "Check your database")
                }
            }
        }

    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}

which moved to second view ScanWithCamera.swift by click on NavigationLink "Scan with Camera". In ScanWithCamera.swift

struct ScanWithCamera: View {
    var body: some View {
        NavigationView{
            Text("Damn...bro...")
                .navigationBarTitle("Page2",displayMode: .inline)
            .navigationBarItems(leading:
                Button(action: {
                    print("Edit button pressed...")
                }) {
                    Text("Edit")
                }
            )
        }

    }
}

struct ScanWithCamera_Previews: PreviewProvider {
    static var previews: some View {
        ScanWithCamera()
    }
}

struct ScanWithCamera_Previews: PreviewProvider {
    static var previews: some View {
        ScanWithCamera()
    }
}

I would like to have a button on Navigation Bar, but I have no idea how to add it there. When I tried to do it with .navigationBarItems, I had navigation bar for almost half of screen like on the screen. how to add this button there so that the navigation bar does not increase?

.navigationBarItems is the correct way to do it. Try sharing the code you used for that method, what was rendered, and what you don't like about it. You should use an HStack {} as the element in leadingItems. This is most likely what was missing — drootang
– drootang, Commented May 13, 2020 at 20:26
@drootang I edidted post, can you look there? I also added picture — newbieHere
– newbieHere, Commented May 13, 2020 at 20:30

Jawad Ali · Accepted Answer · 2020-05-13 22:05:31Z

You can Use following code

if you want to show edit on place of back ... you can do this

struct DestinationView: View {
    var body: some View {
        List {
            Text("1")
        }
        .navigationBarTitle("Destination")
        .navigationBarItems(leading:

             Button("Edit") {
               print("About tapped!")
               }
        ).navigationBarBackButtonHidden(true)
    }
}

Result

If you want to show back with multiple button example

struct DestinationView: View {
    var body: some View {
        List {
            Text("1")
            Text("2")
        }
        .navigationBarTitle("DestinationView")
        .navigationBarItems(leading: HStack {
                Button("Back") {
                    print("About tapped!")
                }.background(Color.black)
                    .foregroundColor(Color.white)

                Button("Help") {
                    print("Help tapped!")
                }
                }, trailing:
                HStack {

                    Button("About") {
                        print("About tapped!")
                    }

                    Button("Info") {
                        print("Help tapped!")
                    }
                }
        )

    }
}

Result

If you want .inline and multiple buttons

struct DestinationView: View {
    var body: some View {
        List {
            Text("1")
            Text("2")
        }
        .navigationBarTitle("Destination")
        .navigationBarItems(leading: HStack {
                Button("Back") {
                    print("About tapped!")
                }.background(Color.black)
                    .foregroundColor(Color.white)

                Button("Help") {
                    print("Help tapped!")
                }
                }, trailing:
                VStack {

                    Button("About") {
                        print("About tapped!")
                    }

                    Button("Info") {
                        print("Help tapped!")
                    }.foregroundColor(Color.red)
                }
        )


    }
}

Result

Bug Hunter Zoro · Accepted Answer · 2022-09-21 15:00:50Z

2

In iOS 14+ if you try to use navigationBarButton you'll get a deprecated warning and you'll be asked to use the toolBar here's the example code for the same

NavigationView {
            Text("Hello")
            }.navigationTitle("Home")
                .toolbar {
                    ToolbarItem(placement: .navigationBarLeading) {
                        Button {
                            print("hello")
                        } label: {
                            Image(systemName: "person.crop.circle").imageScale(.large)
                        }
                    }
                }
        }

Here's how the above code will look like, you can change the placement of the ToolBarItem by changing the value of placement

answered Sep 21, 2022 at 15:00

Bug Hunter Zoro

1,96521 silver badges28 bronze badges

1 Comment

Bugmeister Over a year ago

.navigationBarLeading / .navigationBarTrailing for the placement is deprecated now too, replaced with .topBarLeading / .topBarTrailing

elliott-io · Accepted Answer · 2020-05-13 21:33:09Z

1

Change your location from leading to trailing to put it on the top right of your navigation (where an Edit button would normally go):

    NavigationView{
        Text("Damn...bro...")
            .navigationBarTitle("Page2",displayMode: .inline)
        .navigationBarItems(trailing:
            Button(action: {
                print("Edit button pressed...")
            }) {
                Text("Edit")
            }
        )
    }

answered May 13, 2020 at 21:33

elliott-io

1,4148 silver badges9 bronze badges

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