redirect iphone app to apple store

Question

I have an iphone app, and when there are upgrades available, I want to prompt the user to upgrade, and if they click upgrade, I want to redirect them to the apple store. How is this done?

Thanks

Answer 1

Apple documents the process here: http://developer.apple.com/library/ios/#qa/qa2008/qa1629.html

The basics boils down to using an NSURL to open an iTunes link:

NSString *iTunesLink = @"http://itunes.apple.com/us/app/warehouse51/id364201184?mt=8";

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:iTunesLink]];

However, I don't believe there is a way to direct to the upgrade tab.

Note: phobos links are generally outdated, so ignore that your link won't look like the example in Apple's doc. It will generally look like the one in my updated example here.