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as the title says i wanna know how i can recognize that new file have been added to my App for example over an iTunes Sync. In iOS4 i used the methods

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

or 

- (void)application:(UIApplication *)application didBecomeActive

But since iOS 5, this is useless because the app will not enter the Background and become active after a sync. It stays active. So is there a way to solve this?

regards

Ralf

Rale Kay
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2 Answers2

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If iTunes file sharing uses the new file coordination mechanism (haven't checked but I would assume that it does), you could implement the NSFilePresenter protocol to get notified of changes in the Documents directory.

It should be possible to use a single file presenter for the entire directory by implementing presentedSubitemDidAppearAtURL: and related methods (see "Handling Changes to a Presented Directory" in the NSFilePresenter documentation).

omz
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  • -.- Ok. Shame on me that i didn´t see that in the Doc. Sounds great. Thanks omz – Rale Kay Oct 15 '11 at 11:52
  • @RaleKay Did you ever get to try this? I just attempted to implement my suggestion and while it works fine in the simulator when I drop files into the simulator's Documents directory, I don't get any notifications on the device when I use iTunes file sharing. Not sure if I'm doing something wrong or if iTunes just doesn't use file coordination (in which case it might be worth filing a bug). – omz Oct 26 '11 at 13:39
  • From [this thread](https://devforums.apple.com/message/517775) in the dev forums, it seems that iTunes really doesn't use file coordination. :( – omz Oct 26 '11 at 13:42
  • Hi. Sorry for my late respond. Jap i did get it to work but without the protocol. I just did start a request if there are any new files in the documents directory in a background thread. It´s exactly the the same as the protocol should work. But without the protocol you got it for pre iOS5 Devices, too ;) – Rale Kay Dec 15 '11 at 09:20
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Usually I create a Timer and periodically check for new files in the Directory shared with ITunes. I think with iOS5 it's the best approach.

iOS5 can sync through WiFi so you don't have control about when a file will be added to the directory

ppaulojr
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