Spanning radiogroup in two cells

I have a <RadioGroup android:orientation="horizontal" android:layout_span="2">

with two <RadioButtons>

I need to span in 开发者_如何学JAVAa <TableRow>

But only the first button shows.

The snippet is here: http://pastebin.com/GLVugZWb

Any hints ?

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You should set android:layout_width, _height and _weight for radio buttons. Set _weight parameter = 1. Hope this help.