title: ImageView extended: how can i ad a custom attribute
body: <p>If I create a class that extends <code>ImageView</code> is it possible to create a custom attribute that can be set in the XML layout like this?</p>
  
  <pre><code>&lt;com.myPackage.MyCustomImageView
      xmlns:cusimgview="http://schemas.android.com/apk/res-auto" 
      android:id ="@+id/myImageView"
      cusimgview:customattribute ="something like a color"
  /&gt;
  </code></pre>