Implement onScrollChanged Event
<p>I have an <code>AbsoluteLayout</code> xml:</p>

<pre><code>&lt;AbsoluteLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:id="@+id/MeasureAbsLayout"  
  android:layout_width="fill_parent"
  android:layout_height="fill_parent"&gt;

    &lt;ImageView android:id="@+id/MeasureImageView"
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent"&gt;
    &lt;/ImageView&gt;

    &lt;RelativeLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"&gt;
        &lt;Button android:text="Previous" 
            android:layout_height="wrap_content" 
            android:id="@+id/MeasurePrev"           
            android:layout_alignParentBottom="true"
            android:layout_width="wrap_content"&gt;
        &lt;/Button&gt;

        &lt;Button android:text="Result"
            android:layout_height="wrap_content" 
            android:id="@+id/MeasureResult"         
            android:layout_alignParentRight="true"
            android:layout_alignParentBottom="true"
            android:layout_width="wrap_content"&gt;
        &lt;/Button&gt;
    &lt;/RelativeLayout&gt;
&lt;/AbsoluteLayout&gt;
</code></pre>

<p>I want to implement <code>AbsoluteLayout</code>'s <code>onScrollChanged</code> in my <code>Activity</code> class.</p>

<p>How can I implement this?</p>
