Hello everyone, I am new to swiftui and I am trying to make a login view. Below is what i have right now. As you can see a function is called and the return value is stored in branch. What i want to do is when branch does not equal the string 'false' it should navigate to another view. But when I use a navigationLink it seems to skip over the entire action section. Can you guys help me? It has to navigate to a MenuView with a property: MenuView(title: branch). branch being the return value from the function. Thanks in advance!

TextField("username", text: $username)
    .frame(width: 300, height: 50, alignment: .center)
    .textFieldStyle(RoundedBorderTextFieldStyle())
SecureField("password", text: $password)
    .frame(width: 300, height: 50, alignment: .center)
    .textFieldStyle(RoundedBorderTextFieldStyle())
Button(action: {
    branch = login(username: username, password: password)
    if branch != "false" {
        valid = true
    } else {
        showInvalid = true
        return
    }
}, label: {
    HStack {
        Text("Login")
        Image(systemName: "chevron.right")
    }                    
    .navigationBarHidden(true)
    .frame(width: 300, height: 20)
    .padding(.init(top: 10.0, leading: 0, bottom: 10.0, trailing: 0))
    .overlay(
        RoundedRectangle(cornerRadius: 10)
            .stroke(lineWidth: 2.0)
    )
})
.alert(isPresented: $showInvalid) {
    Alert(title: Text("Invalid"), message: Text("Invalid username or password"), dismissButton: .default(Text("Ok")))
}

Ok I have had a look at this and a couple of points.

1. Do you have to return a Stringfrom the func login()
2. I do not see anywhere in your code a NavgationLink?

I have change it about to this

struct ContentView: View {
    @State private var username = ""
    @State private var password = ""

    @State private var valid = false
    @State private var showingInvalidAlert = false

    var body: some View {
        NavigationView {
            VStack {
                TextField("username", text: $username)
                    .frame(width: 300, height: 50)
                    .textFieldStyle(RoundedBorderTextFieldStyle())
                SecureField("password", text: $password)
                    .frame(width: 300, height: 50)
                    .textFieldStyle(RoundedBorderTextFieldStyle())
                Button {
                    valid = login(username: username, password: password)
                    if valid == false {
                        showingInvalidAlert.toggle()
                    }
                } label: {
                    HStack {
                            Text("Login")
                            Image(systemName: "chevron.right")
                        }
                }
                .frame(width: 300, height: 20)
                .padding(.vertical ,10)
                .overlay(
                        RoundedRectangle(cornerRadius: 10)
                            .stroke(lineWidth: 2.0)
                    )

                NavigationLink(destination: Text("Success!"),isActive: $valid) { //<- This will take it to rest
                        EmptyView()
                }

            }
            .navigationBarHidden(true)
            .alert(isPresented: $showingInvalidAlert) {
                Alert(title: Text("Invalid"), message: Text("Invalid username or password"), dismissButton: .default(Text("Ok")))
            }
        }
    }

    func login(username: String, password: String) -> Bool {
        // In here your check to see if username/password are valid
        if username == "danny", password == "password" {
            return true
        }

        return false
    }
}