How to create a scheduled update in iOS

I want to create a schedule update to my ios, lets say for example every five days my app will fetch something to the internet and update the database I also want user to set the interval. I want to know where to start and any guides out there? Thanks in advance!

-------------Problems Reply------------

Your app won't be able to retrieve this information in the background. What you can do is set up an entry in NSUserDefaults with a UNIX timestamp of the last update and check that ever so often while the app is running or when it starts up. From there, if the timestamp is older than a week (as you mention in your question), you can just call the method that handles the updates from the server.

Pseudocode:

if (currentTimestamp - lastUpdateTimestamp <= (60 * 60 * 24 * 7)) {
[self updateFromServer];
}

Category:objective c Views:7 Time:2011-12-30

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