How to dynamically hide a menu item in BottomNavigationView?

Question

I want to hide a menu item of BottomNavigationView dynamically based on some conditions. I tried the following but it is not working.

mBottomNavigationView.getMenu()
            .findItem(R.id.item_name)
            .setVisible(false);

mBottomNavigationView.invalidate();

Answer 1

mBottomNavigationView.getMenu().removeItem(R.id.item_name);

removeItem does the trick. Not sure why setVisible method is not working.

Answer 2

You can hide a menu item by setting isVisible as false with using suggested property isVisible in Kotlin. But this makes your menu item removed from BottomNavigationView on Android 9 as my observation.

bottomNavigation.menu.findItem(R.id.menu_item).isVisible = false

If you use a single color for your bottom navigation view's background you can use similar approach to save the menu items in place. As an example the one in the right edge.

// 0x000000 is black as an example
bottomNavigation.menu.findItem(R.id.menu_item).icon = ColorDrawable(0x000000)
// and disable for the actions
bottomNavigation.menu.findItem(R.id.menu_item).isEnabled = false

Answer 3

Try this:

navView.getMenu().findItem(R.id.your_menu_item_id).setVisible(true);
navView.getMenu().findItem(R.id.your_menu_item_id).setVisible(false);