关于Android中动态添加RadioButton，设置监听获取的id不对啊！

这样获取的checkId不对啊！

 radioGroup.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                int id =  (int) group.getChildAt(checkedId).getTag();
                if(lists != null && id +1 <= lists.size()){
                    ImageLoader.getInstance().displayImage(lists.get(id).getHead_img(), roundedImageView);
                    listAdapter.updateData(lists.get(id));
                }
            }
        });