Create submenus programmatically for existing Menu created from XML

Question

I have created my parent menus in xml , now i don't know how to create submenus under those parents using code. That means , parents are coded in menu.xml and submenus will be loaded based on a dynamic code as and when the data is available.

When i tried to use menu.addSubMenu it is creating a new parent menu item.

Answer 1

I know this is a very very old thread but hopefully this will help others like me who had the same requirement.

menu/movies.xml:

<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools">
    <group>
        <item
            android:id="@+id/action_filter"
            android:showAsAction="never"
            android:title="Filter">
            <menu>
                <group android:menuCategory="container">
                    <item
                        android:id="@+id/action_genre"
                        android:title="Genre">
                        <menu>
                            <group android:checkableBehavior="single" />
                        </menu>
                    </item>
                </group>
            </menu>
        </item>
    </group>
</menu>

then programmatically on your activity/fragment:

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
    super.onCreateOptionsMenu(menu, inflater);
    inflater.inflate(R.menu.movies, menu);
    MenuItem menuItem = menu.findItem(R.id.action_filter).getSubMenu().findItem(R.id.action_genre).getSubMenu().add(Menu.NONE, 1, Menu.NONE, "Action");
    MenuItem menuItem = menu.findItem(R.id.action_filter).getSubMenu().findItem(R.id.action_genre).getSubMenu().add(Menu.NONE, 2, Menu.NONE, "Comedy");
}

Hope this helps.