android下拉菜单(3)

        if(deleteData != null){ 
            deleteData.selected(selectedItem); 
        } 
    } 
     
    private void setDelete(int position){ 
        if(deleteData != null){ 
            deleteData.deletePosition(position); 
        } 
    } 
     
    public interface DeleteData { 
        public void deletePosition(int position); 
        public void selected(String position); 
    } 
     
    class PullDownListAdapter extends BaseAdapter { 
        private ArrayList<HashMap<String, Object>> list = new ArrayList<HashMap<String, Object>>(); 
        private Activity activity = null; 
 
        public PullDownListAdapter(Activity _activity, 
                ArrayList<HashMap<String, Object>> _list) { 
            activity = _activity; 
            list = _list; 
        } 
 
        public int getCount() { 
            return list.size(); 
        } 
 
        public Object getItem(int position) { 
            return list.get(position); 
        } 
 
        public long getItemId(int position) { 
            return position; 
        } 
 
        public View getView(final int position, View convertView, ViewGroup parent) { 
            ViewHolder holder = null; 
            if (convertView == null) { 
                holder = new ViewHolder();