Add And Subtract Dates In Objective-C

Here is the problem: your app works with dates and you would like to be able to find out what day came a week before, or is coming up in two years. There are a few ways to do this but the easiest by far is to use your user’s calendar along with the NSDateComponents Foundation class to figure out precisely what these date relationships are.

Interested? Check out my blog post about this at my blog. http://howtomakeiphoneapps.com/add-and-subtract-dates-in-objective-c/1585/