Assign width to half available screen width declaratively

Question

Is it possible to assign a widget width to half the available screen width, and do it using declarative xml?

Answer 1

If your widget is a Button:

I'm assuming you want your widget to take up one half, and another widget to take up the other half. The trick is using a LinearLayout, setting layout_width="fill_parent" on both widgets, and setting layout_weight to the same value on both widgets as well. If there are two widgets, both with the same weight, the LinearLayout will split the width between the two widgets.