API to determine whether running on iPhone or iPad

Question

Is there an API for checking at runtime whether you are running on an iPhone or an iPad?

One way I can think of would be to use:

[[UIDevice currentDevice] model];

And detect the existence of the string @"iPad" - which seems a bit fragile.

In the 3.2 SDK, I see that UIDevice also has a property which is really what I'm looking for, but doesn't work for pre-3.2 (obviously):

[[UIDevice currentDevice] userInterfaceIdiom]; 

Are there other ways than checking for the existence of @"iPad" for a universal app?

Answer 1

Checkout UI_USER_INTERFACE_IDIOM

http://developer.apple.com/iphone/library/documentation/uikit/reference/UIKitFunctionReference/Reference/reference.html#//apple_ref/c/macro/UI_USER_INTERFACE_IDIOM

Answer 2

Use NSClassFromString and an iPad-specific class. Read more here:

http://developer.apple.com/iphone/library/documentation/General/Conceptual/iPadProgrammingGuide/StartingYourProject/StartingYourProject.html#//apple_ref/doc/uid/TP40009370-CH9-SW3

Answer 3

1. Check for the presence of the userInterfaceIdiom property, usings respondsToSelector:. If it doesn't exist, we are on a pre-3.2 device, thus not an iPad.
2. If userInterfaceIdiom exists, use it.

Edit: ... which is obviously exactly what the UI_USER_INTERFACE_IDIOM() macro does, so use that instead. :)