Background sync in iOS7
- Yes, it is.
- Yes, you can.
- Sometimes, but you shouldn't.
- Yes, you can.
Go and research iOS 7 background operations. Talk of using timers and background operations at some time interval indicate you're approaching the problem in a way that won't work. While the answer to most of your questions is yes, your approach is probably no...
Start with application:performFetchWithCompletionHandler:.