android vpn service

Hi,I want an android application which can connect a vpn server with vpnadress,username and pw.. when phone is close/open must connect latest vpn automatically,also when wifi change must connect vpn automatically...You can use ics openvpn solution..bonus: users can get the vpn inf with qr reader.. The most important and urgent task is compile or implement openvpn source or [login to view URL] class and success connect to vpn(no need user interface)İf you can do just this,my budget is 60 $.