Standalone-toolbar

widget_toolbar.xml

<android.support.v7.widget.Toolbar
	android:id="@+id/toolbar"
	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="wrap_content"
	android:background="?attr/colorPrimary"
	android:minHeight="?attr/actionBarSize"
	android:theme="@style/ThemeOverlay.AppCompat.Dark"
	app:popupTheme="@style/AppTheme.PopupOverlay">

	<android.support.v7.widget.LinearLayoutCompat
		android:layout_width="match_parent"
		android:layout_height="wrap_content"
		android:orientation="horizontal">

		<FrameLayout
			android:layout_width="wrap_content"
			android:layout_height="match_parent"
			android:layout_marginEnd="16dp"
			android:layout_marginRight="16dp">

			<ImageView
				android:id="@+id/toolbar_icon"
				android:layout_width="wrap_content"
				android:layout_height="match_parent"
				android:layout_gravity="center"
				android:src="@drawable/ic_arrow_back"
				android:tint="@color/white"
				android:visibility="gone"/>

		</FrameLayout>

		<TextView
			android:id="@+id/toolbar_title"
			style="@style/TextAppearance.AppCompat.Widget.ActionBar.Title"
			android:layout_width="wrap_content"
			android:layout_height="wrap_content"
			android:text="@string/app_name"/>
	</android.support.v7.widget.LinearLayoutCompat>

</android.support.v7.widget.Toolbar>