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Editorial Team
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Asked: 2026-05-15T11:42:34+00:00

Can I add the UIBannerViewDelegate protocol to my UIViewController subclass while remaining compatible with

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Can I add the UIBannerViewDelegate protocol to my UIViewController subclass while remaining compatible with pre-iOS 4 devices?

This is NOT a duplicate, the question is specifically related to the delegate protocol.

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1 Answer

  1. Editorial Team

    I’d try something like:

    #ifdef __IPHONE_4_0

@interface MYViewController <UIBannerViewDelegate, …>

#else

@interface MYViewController < … >

#endif

    Remember to #include <TargetConditionals.h>;.

    Edit: this question duped Are Apps using iAd compatible with older iOS which has a more complete answer.

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