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iOS backgrounding execution

Posted on 2014-01-08
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Last Modified: 2014-01-09
Hi guys,

I am developing an iOS app for iPad/iPhone for sending XMPP messages. If the user enters an area with no network coverage I want to retry sending the message when I get network connectivity. I can do this, however if the user composes a message and then hit the Home button and i'm in a  the app obviously goes into the background.

I want to be a responsible app and get into the store so know I can't piggy back onto VOIP, Music background modes so how can I still send this message out while app not in the foreground.

Can iOS wake my app up even for a short time say 30 secs every xxx minutes to let me create my XMPP session and try sending the message again? Or can I create a finite task and try for as long as possible to send my message out. Once this time limit is reached thats it and I have to wait until the app is started again?

I know there are new bg modes in iOS 7 but I want to cater for iOS 6 as well ( don't ask :D ). Do I have to use one of these new bg states for creating a long running app?

There must be something that I can do. What is the correct and best solution. Hopefully not mutually exclusive :D.

Ideally it would be iOS waking me up every so often if I have messages and me trying to send them.

Help more than welcome.
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Question by:HackThePlanet
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pgnatyuk earned 500 total points
ID: 39767328
In iOS 7 there is new feature - background fetch. Here you'll find everything:
Multitasking in iOS 7
Or here are two short tutorials:
iOS 7: Background Fetch
iOS 7 SDK: Working with Background Fetch

For an earlier version os iOS, I'd try to use the location manager - it will allow your app to work in the background. Or simply resend a message each time the network status is restored.
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by:HackThePlanet
ID: 39767402
Since the application is in essence a chat application (XMPP chat) would that fall under a social networking application in Apple's eyes?

I see in the Location Manager section in developer section that it talks about "social networking".

If I have messages to send and I go into the background I suppose I could start a significant change location service. If I run past allotted time I could register for a stay of execution with a finite task.

And so on until all messages are sent. Then I would rely on Push notifications for notification of incoming messages.

Sound like a plan that would get into the app store for iOS6 and 7?
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by:pgnatyuk
ID: 39767480
Sounds good.
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Author Comment

by:HackThePlanet
ID: 39767502
Brilliant. Many thanks pgnatyuk. Found a way forward. Ciao!
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Author Closing Comment

by:HackThePlanet
ID: 39767506
Fab answer. Helped distill into something that is now understandable. Cheers!
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by:pgnatyuk
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You are welcome
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