res/layout/photo_module.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Copyright (C) 2013 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.
-->

<!-- This layout is shared by phone and tablet in both landscape and portrait
 orientation. The purpose of having this layout is to eventually not manually
 recreate views when the orientation changes, by migrating the views that do not
 need to be recreated in onConfigurationChanged from old photo_module to this
 layout. -->

<merge xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_gravity="center">
    <TextureView
        android:id="@+id/preview_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <View
        android:id="@+id/flash_overlay"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="@android:color/white"
        android:visibility="gone"
        android:alpha="0" />
    <ViewStub android:id="@+id/face_view_stub"
        android:inflatedId="@+id/face_view"
        android:layout="@layout/face_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:visibility="gone"/>
    <com.android.camera.ui.RenderOverlay
        android:id="@+id/render_overlay"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />
    <include layout="@layout/camera_controls"
        android:layout_gravity="center"
        style="@style/CameraControls"/>
</merge>