iPhone dev - Use an NSDate object to create weekly, monthly, or yearly notifications?

does any one have any advice, direction, or samp开发者_如何转开发le code that can help me use the NSDate object (added by user) to create either weekly, monthly, or yearly (selected by user) notification pop-ups? Thanks a ton to anyone that can help!

The iOS Dev Library has a section on Local and Push Notifications that should show you example code on how to set them up and add preferences. Hope it does the trick for you