Triggering an action at a certain time, is it possible?

Question

I am just looking into development for the iPhone and I was wondering if it is possible to trigger an action at a certain time?

Based on what I have read it does not seem like this is currently not an option because there are no background processes allowed. Is this true? If so do you guys/gals have any ideas on alternatives?

Thanks

Answer 1

If your app is not running, then no, it's not currently possible.

If your app is running, you can always use NSTimer.

Also, a manual trigger method was mentioned here on SO that involves sending emails with links in them that cause your app to start.

Answer 2

You can read this article about Push Notification Service: Apple's Solution to run iPhone Apps in the background, which may be of help.