<LinearLayout 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:background="#FFCCCCCC"
  android:orientati
 tools:c >

 <com.example.drawingfun.ZoomView 
  android:id="@+id/zoomView"
  android:layout_width="match_parent"
  android:layout_weight="1"
  android:layout_height="0dp"
  android:layout_marginBottom="3dp"
  android:layout_marginLeft="5dp"
  android:layout_marginRight="5dp"
  android:layout_marginTop="3dp">
 
 <com.example.drawingfun.DrawingView
  android:id="@+id/drawing"
  android:layout_width="fill_parent"
  android:layout_height="wrap_content"
  android:background="#FFFFFFFF" />
 </com.example.drawingfun.ZoomView>
</LinearLayout>