使用#close后,应该释放光标

cursor.close()处理完数据后需要打电话.

try {
    ListAdapterdb data = new ListAdapterdb();
    while (cursor.moveToNext()) {
        // data.setID(Integer.parseInt(cursor.getString(0)));
        data.setItem(cursor.getString(1));
        // Adding contact to list
        dataList.add(data);
    }
} finally {
    cursor.close()
}