res/layout-land/people_activity_toolbar.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2014 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

          http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
-->

<!-- Need to set a non null background on Toolbar in order for MenuItem ripples to be drawn on
     this view, instead of another. This will *not* cause an additional draw since the
     background is transparent.-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/toolbar_parent"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:background="#00000000"
    android:elevation="@dimen/tab_elevation"
    android:layout_height="wrap_content" >

    <FrameLayout
        android:id="@+id/toolbar_frame"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize"
        android:background="?attr/colorPrimary">

        <!-- the attribute padding removes the gap between this Toolbar and its parent FrameLayout on tablet -->
        <androidx.appcompat.widget.Toolbar
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:id="@+id/toolbar"
            android:padding="0dp"
            style="@style/ContactsToolbarStyle" />

    </FrameLayout>

</LinearLayout>