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Home/ Questions/Q 852727
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Editorial Team
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Editorial Team
Asked: May 15, 20262026-05-15T07:38:46+00:00 2026-05-15T07:38:46+00:00

For some reason I get linker errors when I try and use CALayer: _OBJC_CLASS_$_CALayer,

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For some reason I get linker errors when I try and use CALayer:

  "_OBJC_CLASS_$_CALayer", referenced from:

I have imported the following headers:

#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#import <QuartzCore/QuartzCore.h>

Code:

arrowImage = [[CALayer alloc] init];
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  1. Editorial Team
    Editorial Team
    2026-05-15T07:38:46+00:00Added an answer on May 15, 2026 at 7:38 am

    Make sure you also add the QuartzCore framework to your target. Just importing the header isn’t enough.

    XCode Screenshot
    enter image description here

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