While using FocusState in SwiftUI, once the return key is pressed keyboard closes and then opens again, how to restrict this behaviour? Once the return/submit key is pressed it should directly focus the next field without disappearing/reappearing keyboard.

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Here is the code below –

import SwiftUI

struct ContentView: View {
    
    @State var username: String = ""
    @State var email: String = ""
    @State var password: String = ""
    @FocusState var focus : FocusField?
    
    enum FocusField: Hashable{
        case username, email, password
    }
    
    var body: some View {

        Form{
            
            TextField("Username", text: $username)
                .focused($focus, equals: .username)
                .onSubmit {
                    focus = .email
                }
            
            TextField("Email", text: $email)
                .focused($focus, equals: .email)
                .keyboardType(.emailAddress)
                .onSubmit {
                    focus = .password
                }
            
            
            SecureField("Password", text: $password)
                .focused($focus, equals: .password)
            
            Button(action: {}, label: {
                Text("Submit").padding(4)
            }).buttonStyle(.borderedProminent).tint(.black).controlSize(.small).padding(.vertical, 8)
            
        }.onAppear(perform: {
            focus = .username
        })
        
    }
}

#Preview {
    ContentView()
}