whmbuaa

https://github.com/whmbuaa/nodepinyin

the previous implemention has some assumption which is not always …

1

…true. the previous implemention assumes below is true: 1. ActivityA->ActivityB 1. press back 2.1 ActivityA.onStart 2.1 ActivityB.onStop otherwize, the behavior will be wrong. unfornautely, this assumption is not always true....

抽象了一个与数据和应用逻辑无关的，分组list框架, 并用此框架重新实现了购物车，从而使代码具无具体业务逻辑无关，具有高度可重用性。