Continue uploading process in background IOS

Question

I was wondering if it was possible to continue the uploading of a file in the background. for example when the user puts the iPad in sleep, the uploading continues...

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Answer 1

http://developer.apple.com/library/ios/#documentation/uikit/reference/UIApplicationDelegate_Protocol/Reference/Reference.html

By requesting, it means that when your App Delegate method applicationDidEnterBackground gets called you have about 5 seconds to finish up. As you are doing a long upload, you can request additional time via beginBackgroundTaskWithExpirationHandler