I decided to make this library when I realized that Android didn't have a standard and simple support to proxy networks that can support all the API versions (more information here). So, the first goal was to add an agnostic method to get the current proxy configuration of the device. After that, I continued adding features to the library in order to get and check proxy configuration, status and other related informations.
Anyway, here it is on GitHub: https://github.com/shouldit/android-proxy-library
The code is not so well documented, but please be patient, it's not my full time job !
I would really appreciate any feedback, comment, issue you may find, so please just write a couple of rows to me or into the GitHub Issues page.