on scrolling speed, cpu speed, and cache size.

 <p>
  Must be set using <A HREF="http://d.android.com/reference/android/widget/AbsListView.html?is-external=true#setOnScrollListener(android.widget.AbsListView.OnScrollListener)" title="class or interface in android.widget"><CODE>AbsListView.setOnScrollListener(android.widget.AbsListView.OnScrollListener)</CODE></A>, or have its
  corresponding methods called from another <A HREF="http://d.android.com/reference/android/widget/AbsListView.OnScrollListener.html