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Editorial Team
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Asked: 2026-05-17T16:08:29+00:00

I am building a universal for iphone/ipad and I already set the deployment target

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I am building a universal for iphone/ipad and I already set the deployment target to 3.0. It can run well on iPad 3.2 and iphone 4.1. However, when I build and run it on my iPod 3.1.3, the runtime automatically picks the iPad code path and tell me that it cannot find UIPopOverController and UIMenuItem. In my iPhone path code, I don’t use anything like that.

It builds successfully and only when trying to run, it says error and cannot find:

dyld: Symbol not found: _OBJC_CLASS_$_UIPopoverController
  Referenced from: /var/mobile/Applications/My_APP
  Expected in: /System/Library/Frameworks/UIKit.framework/UIKit

Editted :

If I remove all of my iPad classes and set the App.info Main nib bundle to be iphone only. Then, it works well. I think the problem is that it runs the iPad code. I don’t know what’s wrong with my iPod or my project

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1 Answer

  1. Editorial Team

    You need to make runtime tests for the classes that are not present on 3.1.3. You cannot have any code like [UIPopoverControler alloc], and you must weaklink to the frameworks.

    See answers to this question:

    How should I approach building a Universal iOS app that will include iOS 4 features, even though the iPad doesn't yet run iOS 4?

    (The question is different to yours, but the root problem is the same one.)

    Or this article:

    http://cocoawithlove.com/2010/07/tips-tricks-for-conditional-ios3-ios32.html

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