How can I detect which system my App Store application is running on?

Question

I am developing a Cocoa Touch application for Apple's App store and I want to do some tweaking in the code depending on what device it's running on. How can I tell?

Answer 1

Check out the documentation for UIDevice

Answer 2

I've used this in a Universal app to determine if the code is running on an iPad

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) 
{
    // Do iPad only stuff here
}

Answer 3

Look at UIDevice and it's properties. There is a systemVersion string that will work for what you want.