How to put navigation drawer below toolbar?
<p>Here my navigation drawer is above toolbar.I also added some xml code.Please help me.</p>

<p><a href="https://i.stack.imgur.com/RUhr1.png" rel="noreferrer"><img src="https://i.stack.imgur.com/RUhr1.png" alt="Here my navigation drawer is above toolbar"></a></p>

<p>here is my activity.xml</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;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_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:openDrawer="start"&gt;

    &lt;include
        layout="@layout/app_bar_categories"
        android:layout_width="match_parent"
        android:layout_height="match_parent" /&gt;

    &lt;android.support.design.widget.NavigationView
        android:id="@+id/nav_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        android:fitsSystemWindows="true"
        app:menu="@menu/activity_main2_drawer" /&gt;

&lt;/android.support.v4.widget.DrawerLayout&gt;
</code></pre>

<p>and my app_bar xml</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;android.support.design.widget.CoordinatorLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.ezybzy.ezybzy.categoris"&gt;

    &lt;android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay"&gt;

        &lt;android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay" /&gt;

    &lt;/android.support.design.widget.AppBarLayout&gt;

    &lt;include layout="@layout/content_categoris" /&gt;

&lt;/android.support.design.widget.CoordinatorLayout&gt;
</code></pre>

<p>and my content main.xml</p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;RelativeLayout 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:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="com.ezybzy.ezybzy.categoris"
    tools:showIn="@layout/app_bar_categories"
    android:background="#ffffff"&gt;
&lt;/RelativeLayout&gt;
</code></pre>

<p>I created the navigation drawer using android studios navigation drawer activity..</p>