iOS Detect network type change automatically.

[imho]

Is it possible to detect network type switching (e.g WIFI to 3G) automatically with say a callback or something?

I checked the Reachability sample, it doesn't really do that at all. The only other way i could think of is to constantly poll the network type which i'm sure is a pretty dumb and inefficient solution.

Thanks.

 

[robbieduncan]

I checked the Reachability sample, it doesn't really do that at all. The only other way i could think of is to constantly poll the network type which i'm sure is a pretty dumb and inefficient solution.

Really? I thought it did. I'm not on a Mac to check right now...

 

[jnic]

Really? I thought it did. I'm not on a Mac to check right now...

It does, here's a link to the Readme: http://developer.apple.com/iphone/library/samplecode/Reachability/listing6.html.

"ReachableViaWiFiNetwork" and "ReachableViaCarrierDataNetwork" tell you whether you're running over Wifi or 3G respectively.

 

[robbieduncan]

It does, here's a link to the Readme: http://developer.apple.com/iphone/library/samplecode/Reachability/listing6.html.

"ReachableViaWiFiNetwork" and "ReachableViaCarrierDataNetwork" tell you whether you're running over Wifi or 3G respectively.

Thought so, although this might have been a better quote from the readme

Reachability runs asynchronously and will report back changes to the network state and to the reachability of remote hosts as those changes happen.