Home/ Questions/Q 823315
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-15T02:55:49+00:00

I have an iPad app that I would like to make Universal, however this

  • 0

I have an iPad app that I would like to make Universal, however this seems alarmingly difficult. I’ve changed things around so that I support both builds, but when building, I get lots of errors about using UIPopOvers. Here’re my questions:

  • Why does UI_USER_INTERFACE_IDIOM() not compile or register on 3.1.3?
  • Can I conditionally have variables in a class definition based on UI_USER_INTERFACE_IDIOM()?
  • If not, should I make two different view controllers?

Thanks!

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Why does UI_USER_INTERFACE_IDIOM() not
    compile or register on 3.1.3?

    The UI_USER_INTERFACE_IDIOM macro is only available starting with 3.2. Same restrictions for the userInterfaceIdiom property of UIDevice. This means that you can only get universal application starting with SDK 3.2.

    Can I conditionally have variables in
    a class definition based on
    UI_USER_INTERFACE_IDIOM()?

    No. The UI_USER_INTERFACE_IDIOM macro is only a runtime shortcut to get the current UI idiom of the device.

    If not, should I make two different
    view controllers?

    If you have very different UI between the two devices, it is wiser to use two different view controllers, and to create the right one at runtime (in the application controller for example) by using the UI_USER_INTERFACE_IDIOM macro.

    • 0