This OpenVPN sample provides a simple and easy way how to open VPN connection with *.ovpn configuration file and username/password - if needed. It is currently working on Android SDK API 21+.
This app is based on schwabe/ics-openvpn project. More information is available here: https://github.com/schwabe/ics-openvpn.
This source code is distributed under GPLv2 licence.