public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
ViewHolder holder = null;
if (convertView == null) {
convertView = mInflater.inflate(R.layout.main_menu_list_child, null);
holder = new ViewHolder();
holder.mChildIcon = (ImageView) convertView.findViewById(R.id.desktop_list_child_icon);
holder.mChildName = (TextView) convertView.findViewById(R.id.desktop_list_child_name);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
AbMenuItem m = mChilds.get(groupPosition).get(childPosition);
holder.mChildIcon.setImageResource(m.getIconId());
holder.mChildName.setText(m.getText());
return convertView;
}
convertView和holder是什么?