title: imageview in list row gets highlighted on tap of any area on row
body: <p>A listview row has a clickable image at the right end of the row.
  I have applied a selector on the image(blue background on click)
  On touch of any part of a row, the image changes colour.
  I want it to show the blue background only on tap of the imageview area</p>
  
  <pre><code>&lt;ImageView
              android:id="@+id/sample"
              android:layout_width="55dp"
              android:layout_height="fill_parent"
              android:layout_gravity="center_vertical"
              android:duplicateParentState="false"
              android:background="@drawable/button_selector"
              &gt;
          &lt;/ImageView&gt;
  </code></pre>