I've just finished my Android widget. Now I need to have different sizes of this widget for the user to choose from. 

For example, I need a medium, small and large size widget, so when the user installs the app and hold the home screen then choose widget, in the widget menu I want him to see three widgets with the same app name but with the size. Something like this:

helloSmall
helloMedium
helloLarge

I have the medium one ready, but how can I add the small and the large in the same app? Knowing that all three sizes contain the same exact data and actions, just the size and the background are different.