buttons shrinking with virtual keyboard

Hi,

There must be any easy answer to this one.

I have a bunch of buttons on a Layout with a few text entry views.

When I run it on the devices , the virtual keyboard comes up and I perform the entry but when the keyboard has moved down my buttons have shrinked in height.

I do have the buttons set up with drawable gradient which I handle when the app firstime loads.

Why is this happening and what can I do?

Thanks Jerry