1.原码、反码、补码:https://www.cnblogs.com/bruce81/p/3536596.html
2.获取Android应用的包名和签名:https://blog.youkuaiyun.com/chaoyu168/article/details/77251838
3.apk签名机制详解:https://www.jianshu.com/p/286d2b372334
4.apktool的安装教程:https://blog.youkuaiyun.com/adaixiaoxiao/article/details/52683537
5.利用apktool查看apk源代码:https://blog.youkuaiyun.com/tester_xjp/article/details/81079254
6.Ubuntu换源解决下载慢的问题:https://blog.youkuaiyun.com/zhangmeimei_pku/article/details/79597951