res/layout/activity_three_dimensional.xml

<?xml version="1.0" encoding="utf-8"?>
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<merge xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.android.gallery3d.app.dualcam3d.ThreeDimensionalActivity">

    <com.android.gallery3d.app.dualcam3d.GLView
        android:id="@+id/image"
        android:layout_width="match_parent"
        android:layout_height="match_parent" />

    <LinearLayout
        android:id="@+id/mode_3d"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="top|end"
        android:paddingTop="130dp"
        android:paddingRight="50dp"
        android:orientation="vertical">

        <ImageButton
            android:id="@+id/three_dimensional"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:background="?android:attr/actionBarItemBackground"
            android:src="@drawable/three_d"/>

        <ImageButton
            android:id="@+id/mode_gyro"
            android:layout_width="wrap_content"
            android:layout_height="40dp"
            android:text="@string/grad"
            android:textAlignment="center"
            android:visibility="gone" />

        <ImageButton
            android:id="@+id/mode_auto"
            android:layout_width="wrap_content"
            android:layout_height="40dp"
            android:text="@string/auto"
            android:textAlignment="center"
            android:visibility="gone" />

        <ImageButton
            android:id="@+id/mode_touch"
            android:layout_width="wrap_content"
            android:layout_height="40dp"
            android:text="@string/trueportrait_touch_up"
            android:textAlignment="center"
            android:visibility="gone" />
    </LinearLayout>

</merge>