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Editorial Team
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Asked: 2026-05-12T13:24:31+00:00

I’m almost done coding my project and I have come across 1 to 2

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I’m almost done coding my project and I have come across 1 to 2 problems with the fading. Here is what my code looks like 

CATransition *animation = [CATransition animation];
[animation setDuration:0.5];
[animation setType:kCATransitionFade];
[animation setSubtype:kCATransitionFromRight, kCATransitionFromLeft];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];

It’s telling me to set a subtype. I basically want to animate going back and going forward. I know i’m pretty close. What else am i missing from the code?

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1 Answer

  1. Editorial Team

    As near as I can tell -setSubtype: takes one NSString* argument.

    The line:

    [animation setSubtype:kCATransitionFromRight, kCATransitionFromLeft];

    should probably be either:

    [animation setSubtype:kCATransitionFromRight];

    or:

    [animation setSubtype:kCATransitionFromLeft];

    EDIT: You may also want to add:

    [[myView layer] addAnimation:animation forKey:@"transitionFromRight"];

    to begin animating your myView object (which is a UIView or subclass).

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