Android DrawerLayout - No drawer view found with gravity

Question

When I click on my drawer toggle I get the following exception:

java.lang.IllegalArgumentException: No drawer view found with gravity LEFT

Answer 1

java.lang.IllegalArgumentException: No drawer view found with gravity LEFT

SOLUTION Assign a layout_gravity = "start" or "left" attribute to one of your DrawerLayout child view if your drawer layout already have a child view. OR Simply create a child view inside your DrawerLayout View and give it a layout_gravity = "start" or "left" attribute. for example

 <?xml version="1.0" encoding="utf-8"?>
    <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:id="@+id/mDrawer_Layout"
        tools:context="com.rad5.matdesign.MainActivity">

        <android.support.design.widget.CoordinatorLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <android.support.v4.widget.DrawerLayout
                android:id="@+id/drawer_layout"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:fitsSystemWindows="true"
                tools:openDrawer="start">

    <!-- Notice that here an image view as a child of the Drawer layout was -->
    <!-- given a layout_gravity="start" -->

                <ImageView
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_gravity="start"/>

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

            <android.support.design.widget.AppBarLayout
                android:id="@+id/appBar"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

                <android.support.v7.widget.Toolbar
                    android:id="@+id/toolbar"
                    android:layout_width="match_parent"
                    android:layout_height="?attr/actionBarSize"
                    android:background="?attr/colorPrimary"/>

                <android.support.design.widget.TabLayout
                    android:id="@+id/tabs"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content" />
            </android.support.design.widget.AppBarLayout>

            <android.support.v4.view.ViewPager
                android:id="@+id/viewpager"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                app:layout_behavior="@string/appbar_scrolling_view_behavior" />

        </android.support.design.widget.CoordinatorLayout>

        <android.support.design.widget.NavigationView
            android:id="@+id/nav_view"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:headerLayout="@layout/nav_header"
            app:menu="@menu/menu_navigation_items" />

    </android.support.design.widget.CoordinatorLayout>

Answer 2

The "Android Drawer" needs to be a direct child node of the "DrawerLayout".

In your example above (re: original question example), you only have a single direct child node under "DrawerLayout" ("LinearLayout"), and no drawer view after it.

Move your drawer view out of your LinearLayout and place it after it.

Answer 3

add

android:layout_gravity="start"

to NavigationView

like this

<com.google.android.material.navigation.NavigationView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:headerLayout="@layout/drawer_menu"
    android:layout_gravity="start"
    android:foregroundGravity="right"
    android:id="@+id/nv">

    <include layout="@layout/drawer_menu"/>
</com.google.android.material.navigation.NavigationView>