Android NavigationView below Toolbar

activity_main.xml

<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:fitsSystemWindows="true"
  android:orientation="vertical">

  <android.support.v7.widget.Toolbar
    android:id="@+id/toolbar"
    android:layout_width="match_parent"
    android:layout_height="@dimen/abc_action_bar_default_height_material"
    android:background="?attr/colorPrimary"
    android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>

  <android.support.v4.widget.DrawerLayout
    android:id="@+id/drawer_layout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <!-- Real content goes here -->
    <FrameLayout
      android:id="@+id/content"
      android:layout_width="match_parent"
      android:layout_height="match_parent"/>

    <!-- The navigation drawer -->
    <android.support.design.widget.NavigationView
      android:id="@+id/navigation"
      android:layout_width="wrap_content"
      android:layout_height="match_parent"
      android:layout_gravity="start"
      app:menu="@menu/drawer"/>

  </android.support.v4.widget.DrawerLayout>
</LinearLayout>

Thank you dude.....

Thank you man...