res/layout/rect.xml

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    
    <org.zeroxlab.graphics.DrawRectView
      android:id="@+id/rect"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"/>
         
</FrameLayout>