一个简单的账户管理系统，可以对自己每天的开销和收入进行记录，而且还加入了便签，可以实时的添加自己的灵感，想法记录等，非常值得android开发新手学习，特别是里面对数据库的操作-A simple account management system that can be for their daily expenses and income records, and also joined the notes, you can add