How to display a list of Wifi-Networks in an iPhone app?

Question

I found some private (undocumented) APIs but Apple does not allow apps to use private frameworks. So does anyone know how to do this using Apple official packages?

like:

Answer 1

Thats wrong check this app out

http://itunes.apple.com/us/app/ihome-connect-setup-app-for/id450241802?mt=8

It shows available wifi networks