Hiding Drawer item Using Android Navigation Component

Question

I am using navigation component along with navigation drawer. If a user login with FirebaseAuth in my LoginFragment I want to hide login/signup menu from navigation drawer. Can anyone tell me how could I do that?

Answer 1

If a user login with FirebaseAuth in my LoginFragment I want to hide login/signup menu from navigation drawer

You can get the menu from the NavigationView attached to the navigation drawer and use removeItem(id) to remove a particular item:

if (userLoggedIn) { // Set that to your logic when the user logged in.
    removeItem(R.id.singup); // adjust that to the id you set to sign up
    removeItem(R.id.login); // adjust that to the id you set to login 
}

public removeItem(int id) {
    NavigationView navView = findViewById(R.id.foo); // Add your NavigationView id
    Menu menu = navView.getMenu();
    if (menu.findItem(id) != null) // Make sure that the item exists in the menu
        menu.removeItem(id); 
}

UPDATE

navigation drawer is in my MainActivity

To access activity from the fragment use requireActivity() or getActivity() like:

((MainActivity) requireActivity()).removeItem(R.id.login); // adjust that to the id you set to sign up
((MainActivity) requireActivity()).removeItem(R.id.signup); // adjust that to the id you set to login