How to check Airplane mode in background in iPhone

问题:

I have application which is working best with Wifi,3G.. Now what i want is i want to check in background if Airplane mode is going to be on at any moment and i want to popup alert saying "Airplane mode is On."
Thanks in advance.

回答1:

You can think different approach, check your mobile Network availability rather than the Airplane mode and Show a Generic Alert There is no network Available for example.

Check This link iphone-sdk-testing-network-reachability

Good luck

回答2:

This is practically impossible unless the user does it within a 10 minute time frame of your application entering background mode.