Detecting network adapter changes on the iPhone

Posted by theactiveactor on Stack Overflow See other posts from Stack Overflow or by theactiveactor
Published on 2010-05-12T01:03:04Z Indexed on 2010/05/14 6:04 UTC
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iphone

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cocoa

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cocoa-touch

Say that there are no WIFI networks currently available and my network-enabled app is connected over 3G. How can I detect if a user has roamed into a WIFI network? I would also like to detect the case when the user is connected over WIFI and suddenly received 3G signal.

In other words, I would like to be asynchronously notified of network adapter changes. I tried using the SCNetworkReachability framework asynchronously but found that for some reason, I am not receiving Wifi-related events (i.e. adapter on/off) when connected over 3G.

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