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Editorial Team
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Editorial Team
Asked: May 22, 20262026-05-22T19:39:52+00:00 2026-05-22T19:39:52+00:00

I am creating calayer subclass for carousel view. My subclass is @interface Carousellayer :

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I am creating calayer subclass for carousel view.

My subclass is

@interface Carousellayer : CALayer {

}
I get an error message in

Cannot find interface declaration for ‘CALayer’, superclass of ‘Carousellayer’ in Carousellayer.h

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  1. Editorial Team
    Editorial Team
    2026-05-22T19:39:52+00:00Added an answer on May 22, 2026 at 7:39 pm

    CALayer header files are not included by default, you need to import QuartzCore:

    #import <QuartzCore/QuartzCore.h>
    

    And also link your application with the corresponding framework.

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