Display scrollable ImageView bigger than screen

To display image bigger than the device screen, in true size, with scroll bar. We can embed it in a ImageView within nested ScrollView and HorizontalScrollView.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >

<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />

<HorizontalScrollView 
android:layout_width="wrap_content" 
android:layout_height="wrap_content">
<ScrollView 
android:layout_width="wrap_content" 
android:layout_height="wrap_content">
<ImageView 
android:src="@drawable/bigpicture"
android:layout_height="wrap_content" 
android:layout_width="wrap_content"
android:scaleType="center"/>
</ScrollView>
</HorizontalScrollView>
</LinearLayout>