[Q] layout in android

[Monica28]

Hi all ,
i have scenario as when user scroll fully at the end of list view there is button at the end of list view...
i want list-view to scroll fully so have width and height fill parent and at the onScrollListener i have made layout visible of buttons below prev its was visiblity:gone but it is not that smooth and what if there is only two items here so this solution of onscrollLister will not work plz help.

here are the screenshots..
http://s22.postimage.org/5wq4z97ox/device_2013_03_19_114523.png
http://s16.postimage.org/bpnm0z2gl/device_2013_03_19_114609.png