1<?xml version="1.0" encoding="utf-8"?> 2<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 3 android:id="@+id/gallery_root" 4 android:orientation="vertical" 5 android:layout_width="match_parent" 6 android:layout_height="match_parent"> 7 <include layout="@layout/gl_root_group"/> 8 <FrameLayout android:id="@+id/header" 9 android:visibility="gone" 10 android:layout_alignParentTop="true" 11 android:layout_width="match_parent" 12 android:layout_height="wrap_content"/> 13 <FrameLayout android:id="@+id/footer" 14 android:visibility="gone" 15 android:layout_alignParentBottom="true" 16 android:layout_alignParentLeft="true" 17 android:layout_alignParentRight="true" 18 android:layout_width="match_parent" 19 android:layout_height="wrap_content"/> 20</RelativeLayout> 21