Android导航抽屉ExpandableListView

我正在尝试在导航抽屉菜单下实现SubMenu。只有一个组菜单。请参见下图我要做什么。目前，我仅从xml菜单列表中添加了主菜单。如何将ExpandableListView作为子菜单添加到菜单以获取以下类型的接口。

在这里，我用来打开/关闭导航抽屉并在抽屉菜单上启动活动的代码单击

navigationView = (NavigationView) findViewById(R.id.navigation_view);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer);

//Setting Navigation View Item Selected Listener to handle the item click of the navigation menu
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {

            // This method will trigger on item Click of navigation menu
            @Override
            public boolean onNavigationItemSelected(MenuItem item) {

                Intent intent;
                int id = item.getItemId();

                //Check to see which item was being clicked and perform appropriate action
                if (id == R.id.favorites) {
                    Intent favoritesIntent = new Intent(MainActivity.this, Favorites.class);
                    startActivity(favoritesIntent);
                } else if (id == R.id.settings) {
                    Intent settingsIntent = new Intent(MainActivity.this, Settings.class);
                    startActivity(settingsIntent);
                }

                drawerLayout.closeDrawer(GravityCompat.START);
                return true;

            }
        });

        // Initializing Drawer Layout and ActionBarToggle
        ActionBarDrawerToggle actionBarDrawerToggle = new ActionBarDrawerToggle(this,drawerLayout,toolbar,R.string.openDrawer, R.string.closeDrawer){

            @Override
            public void onDrawerClosed(View drawerView) {
                // Code here will be triggered once the drawer closes as we dont want anything to happen so we leave this blank
                super.onDrawerClosed(drawerView);
            }

            @Override
            public void onDrawerOpened(View drawerView) {
                // Code here will be triggered once the drawer open as we dont want anything to happen so we leave this blank

                super.onDrawerOpened(drawerView);
            }
        };

        actionBarDrawerToggle.setDrawerIndicatorEnabled(false);
        ImageView titleLogo = (ImageView) findViewById(R.id.titleLogo);
        titleLogo.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                drawerLayout.openDrawer(GravityCompat.START);

            }


      });
    .....

        @Override
            public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.menu_main, menu);
            return true;
        }

这是我使用的XML

<android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_height="match_parent"
        android:layout_width="wrap_content"
        android:layout_gravity="start"
        app:itemTextColor="@color/white"
        app:itemIconTint="@color/white"
        app:headerLayout="@layout/header"
        app:menu="@menu/drawer"
        android:background="@color/colorPrimary" >

    </android.support.design.widget.NavigationView>

这是菜单列表的drawer.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">

    <group android:checkableBehavior="single">

        <item
            android:id="@+id/favorites"
            android:checked="false"
            android:icon="@drawable/favorites"
            android:title="@string/favorites" />

        <item
            android:id="@+id/services"
            android:checked="false"
            android:icon="@drawable/services"
            android:title="@string/services" />

        <item
            android:id="@+id/settings"
            android:checked="false"
            android:icon="@drawable/settings"
            android:title="@string/settings" />

    </group>
</menu>