samples/sdk-hellovr/src/main/res/layout/common_ui.xml

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


    <com.google.vr.sdk.base.GvrView
        android:id="@+id/gvr_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true" />

</RelativeLayout>