activity_main.xml

<android.support.v4.widget.DrawerLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/drawer"
     android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
     tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:measureWithLargestChild="false"
        android:orientation="vertical">

        <include
            android:id="@+id/toolbar"
            layout="@layout/layout_toolbar" />
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textAppearance="?android:attr/textAppearanceLarge"
            android:text="Ini adalah Contoh isi konten dengan widget TextView yang dibungkus oleh Navigation Drawer"
            android:id="@+id/textView" android:layout_gravity="center_horizontal"/>

    </LinearLayout>
    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:headerLayout="@layout/layout_header"
        app:menu="@menu/item_navigasi" />
</android.support.v4.widget.DrawerLayout>