While trying to find a solution for the layout that I want, I came across the setScaleX/setScaleY methods, which are members of the View class.
Now looking at the methods of RelativeLayout and filtering by the API Level 8, since I'm developing an App for >= 2.2, the said methods fade out. But when looking at "Inherited XML Attributes From Class android.view.View" the properties android:scaleX/android:scaleY are still available. Unfortunately trying to use these properties doesn't work and Eclipse says: "error: No resource identifier found for attribute 'scaleX' in package 'android'"
So it seems like the documentation is contradictory and scaleX/scaleY are not available until 3.0 or am I missing something?
Ok, it looks like this is a false representation in the docs, as it's explained here scaleX/scaleY are properties added to the View class with Honeycomb and therefore unfortunately not available in Froyo.