动态控制LinearLayout的布局

由于item布局的显示不太理想，动态控制一下LinearLayout布局

        LinearLayout ll_choose = helper.getView(R.id.ll_choose);
        LinearLayout.LayoutParams params = (LinearLayout.LayoutParams) ll_choose.getLayoutParams();
        //setMargins( left, top, righ, bottom)
        params.setMargins(16, 0, 0, 0);
        ll_choose.setLayoutParams(params);