在iOS 4.0及更高版本上扫描和切换Wifi网络

Question

I am trying to find whether the private APIs listed at: http://code.google.com/p/iphone-wireless/wiki/Apple80211Functions still work with iOS 4.0 and above. I am trying to turn the wifi ON, scan the networks available and latch on to one of the networks. I am not going to put the application in appStore and it is just an experiment. I found many applications pulled down from the appStore but they seem to have been developed on iOS versions less than 3.0. I would also like to get an example if possible.

Please Help.

Answer 1

I needed the same thing as you, and after some research I must say that starting from iOS 5 it is possible to scan the network list using private API on a jailbroken device only. This blog post states the following:

Last year Apple has blocked wifi scanners from App Store, however till iOS5 it was still available for private usage via WiFiManager bundle.

In iOS5, WifiManager bundle no more exists however 80211 functions are still available via IPConfiguration bundle.

The API you linked provides an open-source tool Stumbler which seems like something you were seeking. The tool is claimed to work under iOS 5.

Answer 2

Tried stumbler for iOS5 via linking to framework

/System/Library/SystemConfiguration/IPConfiguration.bundle/IPConfiguration

I could link to Apple80211Open, Apple80211BindToInterface, Apple80211Scan. However, I only receive empty WiFi scan results on jailbroken iPhone4S / iOS 5.1.1

The folks from WifiFofum did a good job and have a app on cydia which runs on JB iOS 5.1.1 and does an excellent job for scanning WiFi networks (BSSID, link level, SSID, channels, ...).