How to add custom item to NavigationView using menu layout?

Question

I am using the actionLayout tag, but moving it to the right. Can someone please advice why this is happening. I also tried using different icons and the same result.

activity_main.xml

    <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>

activity_main_drawer.xml

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto">
    <group android:checkableBehavior="single">

        <item
            android:id="@+id/nav_saved_deals"
            android:icon="@drawable/ic_attach_money_black_24dp"
            android:title="Saved Deals" />
        <item
            android:id="@+id/nav_settings"
            android:icon="@mipmap/perm_group_system_tools"
            android:title="Settings" />
    </group>

    <item android:title="Communicate">
        <menu>

            <item
                android:id="@+id/nav_fb_share"
                android:title=""
                app:actionLayout="@layout/fb_menu_item" />
            <item
                android:id="@+id/nav_share_other"
                android:icon="@drawable/ic_menu_share"
                android:title="Share other" />

        </menu>
    </item>
</menu>

fb_menu_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/icon"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:src="@mipmap/facebook" />

    <TextView
        android:id="@+id/title"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toEndOf="@+id/icon"
        android:layout_toRightOf="@+id/icon"
        android:gravity="center_vertical"
        android:text="Line 1"
        android:textColor="#000"
        android:textStyle="bold" />

    <TextView
        android:id="@+id/subTitle"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"            
        android:layout_below="@+id/title"
        android:layout_toRightOf="@+id/icon"
        android:text="Line 2" />

</RelativeLayout>

The layout is displayed in the upper left corner of the screen above the status bar.

<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">
        <LinearLayout
            android:layout_height="wrap_content"
            android:layout_width="wrap_content">

            <include
                layout="@layout/fb_menu_item"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"/>
        </LinearLayout>

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

Answer 1

, actionLayout ( ) . , . https://developer.android.com/guide/topics/resources/menu-resource.html

, , NavigationView :

<android.support.design.widget.NavigationView
    android:id="@+id/navigation_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <include layout="@layout/nav_header" />

        ... listview/linearlayout/just items ...

    </LinearLayout>
</android.support.design.widget.NavigationView>

- :

<android.support.design.widget.NavigationView
    android:id="@+id/navigation_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    android:fitsSystemWindows="true">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical">

        <LinearLayout
            android:id="@+id/header"
            android:layout_width="match_parent"
            android:layout_height="172dp"
            android:background="@drawable/drawer_background"
            android:orientation="horizontal">
        </LinearLayout>

        <RelativeLayout 
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <ImageView
                android:id="@+id/icon"
                android:layout_width="20dp"
                android:layout_height="20dp"
                android:layout_alignParentLeft="true"
                android:layout_alignParentStart="true"
                android:src="@drawable/ic_add_black" />

            <TextView
                android:id="@+id/title"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentTop="true"
                android:layout_toEndOf="@+id/icon"
                android:layout_toRightOf="@+id/icon"
                android:gravity="center_vertical"
                android:text="Line 1"
                android:textColor="#000"
                android:textStyle="bold" />

            <TextView
                android:id="@+id/subTitle"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_below="@+id/title"
                android:layout_toRightOf="@+id/icon"
                android:text="Line 2" />

        </RelativeLayout>
    </LinearLayout>
</android.support.design.widget.NavigationView>

Answer 2

public void addItem(){
     MenuItem mainItem = navigationView.getMenu().findItem(R.id.Communicate);
     SubMenu subMenu = mainItem.getSubMenu();
     subMenu.add(R.id.Communicate, Menu.NONE, Menu.NONE, "Share to Facebook").setIcon(context.getResources().getDrawable(R.drawable.facebook, context.getTheme()));
}