Mine

        super.onCreate(icicle);
        setContentView(R.layout.main);

	LinearLayout ll = (LinearLayout)findViewById(R.id.ll);

	RadioGroup rg = new RadioGroup(this);
	rg.setLayoutParams(new LinearLayout.LayoutParams(
                LinearLayout.LayoutParams.WRAP_CONTENT,
                LinearLayout.LayoutParams.WRAP_CONTENT));

	ll.addView(rg);

	RadioGroup.LayoutParams rlp = new RadioGroup.LayoutParams(
	    RadioGroup.LayoutParams.WRAP_CONTENT,
	    RadioGroup.LayoutParams.WRAP_CONTENT);

	RadioButton foo = new RadioButton(this);
	foo.setText("foo");
	foo.setLayoutParams(rlp);
	rg.addView(foo);

	RadioButton bar = new RadioButton(this);
	bar.setText("bar");
	bar.setLayoutParams(rlp);
	rg.addView(bar);

	RadioButton baz = new RadioButton(this);
	baz.setText("baz");
	baz.setLayoutParams(rlp);
	rg.addView(baz);