我使用这种方式制作了一个列表视图:
String[] list = {"1","2","3","A","B","C"};
Widget_List_Adapter adapter = new Widget_List_Adapter(this, list);
//set the onItemClickListener as usual
getListView().setOnItemClickListener(this);
//set our custom list item listener for the extra functions
adapter.setListener(this);
setListAdapter(adapter);
现在我怎样才能简单地添加一些类别?