android os 记事本功能的练习例子，包括UI,SQlite的操作，分三个阶段完成功能，文件名结尾为_Solution的文件是解决方案，可以对应该文件练习，代码有注释-android os Notepad function of exercise examples, including the UI, SQlite operation, completion in three phases, the file name ends

android平台上， 类似iphone 实现翻页的3D效果-android platform, similar to the iphone page of the 3D effects to achieve