<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:gravity="center"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="@+id/toolbar"
layout="@layout/toolbar"/>
<!-- the layout which will contain (host) the drawerLayout -->
<FrameLayout
android:layout_below="@id/toolbar"
android:id="@+id/drawer_container"
<!-- the layout which will be the content of the activity (which will be hosted inside the drawer (NOT the list of the drawer)) -->
android:id="@+id/frame_container"
</FrameLayout>
</RelativeLayout>