怎么用java写图片文字图片列表布局

Question

            @Override
        public View getChildView(int groupPosition, int childPosition,
                boolean isLastChild, View convertView, ViewGroup parent)
        {

            LinearLayout ll = new LinearLayout(MenuActivity.this);
            ll.setOrientation(0);
            ImageView logo = new ImageView(MenuActivity.this);
            logo.setScaleType(ImageView.ScaleType.FIT_CENTER);
            logo.setImageResource(childlogos[groupPosition][childPosition]);        
            ll.addView(logo);
            TextView textView = getChildTextView();
            textView.setText(getChild(groupPosition,childPosition).toString());             
            ll.addView(textView);   
            ImageButton jia = new ImageButton(MenuActivity.this);
            jia.setImageResource(R.drawable.jia);       
            jia.setScaleType(ImageView.ScaleType.FIT_CENTER);
            ll.addView(jia);
            ImageButton jian = new ImageButton(MenuActivity.this);
            jian.setImageResource(R.drawable.jian);
            jian.setScaleType(ImageView.ScaleType.FIT_CENTER);
            ll.addView(jian);
            return ll;
        }

为什么我在可拓展列表中这么写，文字后面的图片就是不显示出来呢？？