setTag使用错误The key must be an application-specific resource id.

12-10 16:50:56.101: E/AndroidRuntime(28051): java.lang.IllegalArgumentException: The key must be an application-specific resource id.

在res/values/ids.xml中添加：

<resources>
    <item type="id" name="tag_user"></item>
    <item type="id" name="tag_group"></item>    
</resources>

convertView.setTag(R.id.tag_group, groupHolder);

convertView.getTag(R.id.tag_group)