PMS安装的逻辑

https://chaman.gitbooks.io/techblog/Android/PMS/PMS.html

http://hjhjw1991.github.io/android/2018/01/02/Apk%E5%AE%89%E8%A3%85%E5%8D%B8%E8%BD%BD%E5%8E%9F%E7%90%86/