Add footer to NavigationDrawer

add_footer_navigation_drawer.md

<android.support.design.widget.NavigationView
    android:id="@+id/drawer"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    app:headerLayout="@layout/drawer_header"
    app:menu="@menu/drawer">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom"
        android:clickable="true"
        android:orientation="vertical">
        <TextView
            android:id="@+id/footer_item_1"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:gravity="center"
            android:text="Footer Item 1" />
        <TextView
            android:id="@+id/footer_item_2"
            android:layout_width="match_parent"
            android:layout_height="48dp"
            android:gravity="center"
            android:text="Footer Item 2" />
    </LinearLayout>

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

Add some fake menu to avoid menu overlap

<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <group>
        <item
            android:id="@+id/nav_item_1"
            android:icon="@drawable/ic_nav_item_1"
            android:title="Nav Item 1" />
        <item
            android:id="@+id/nav_item_2"
            android:icon="@drawable/ic_nav_item_2"
            android:title="Nav Item 2" />
        <item
            android:id="@+id/nav_item_3"
            android:icon="@drawable/ic_nav_item_3"
            android:title="Nav Item 3" />
        <item
            android:id="@+id/nav_item_4"
            android:icon="@drawable/ic_nav_item_4"
            android:title="Nav Item 4" />
        <item
            android:id="@+id/footer_spacer_1"
            android:checkable="false"
            android:enabled="false"
            android:orderInCategory="200"
            android:title="" />
        <item
            android:id="@+id/footer_spacer_2"
            android:checkable="false"
            android:enabled="false"
            android:orderInCategory="200"
            android:title="" />
    </group>
</menu>