app/src/main/res/layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?><androidx.drawerlayout.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:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/main_activity_layout" android:fitsSystemWindows="true" tools:context=".MainActivity" tools:openDrawer="start"> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical"> <androidx.appcompat.widget.Toolbar android:layout_width="match_parent" android:layout_height="?attr/actionBarSize" android:background="#1D4EB5" android:id="@+id/ToolBar" android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" app:popupTheme="@style/ThemeOverlay.AppCompat.Light" android:elevation="4dp" /> <FrameLayout android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/fragment_container" /> </LinearLayout> <com.google.android.material.navigation.NavigationView android:layout_width="wrap_content" android:layout_height="match_parent" android:layout_gravity="start" android:id="@+id/nav_view" app:headerLayout="@layout/nav_header" app:menu="@menu/drawer_menu" /> </androidx.drawerlayout.widget.DrawerLayout>