How to access and open the iPhone's SMS API from an iPhone app

Question

In my iPhone app, I need to access the SMS application.

I need that when I click a button in my iphone app. It should open the SMS app of iphone and preload the mess

Answer 1

This is possible starting from iOS 4.0; use the MFMessageComposeViewController from the MessageUI Framework.

Details and example: http://developer.apple.com/library/ios/#samplecode/MessageComposer/Introduction/Intro.html