<?xml version="1.0" encoding="utf-8"?> <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"> <include layout="@layout/app_bar_main" android:layout_width="match_parent" android:layout_height="match_parent" /> <!--<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:headerLayout="@layout/nav_header_main"--> <!--app:menu="@menu/activity_main_drawer" />--> </android.support.v4.widget.DrawerLayout>