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Editorial Team
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Asked: 2026-05-14T22:55:59+00:00

I guess I have to convert the CGRect into an object to pass it

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I guess I have to convert the CGRect into an object to pass it to fromValue?

This is how I try it, but it doesn’t work:

CABasicAnimation *frameAnimation = [CABasicAnimation animationWithKeyPath:@"frame"];
frameAnimation.duration = 2.5;
frameAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
frameAnimation.fromValue = [NSValue valueWithCGRect:myLayer.frame];
frameAnimation.toValue = [NSValue valueWithCGRect:theNewFrameRect];
[myLayer addAnimation:frameAnimation forKey:@"MLC"];
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1 Answer

  1. Editorial Team

    I guess you need to change your last line to make it work:

    [myLayer addAnimation:frameAnimation forKey:@"frame"];

    You may also set an action to the layer to make all frame changes animated with your animation:

    CABasicAnimation *frameAnimation = [CABasicAnimation animation];
frameAnimation.duration = 2.5;
frameAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];

myLayer.actions = [NSDictionary dictionaryWithObjectsAndKeys:frameAnimation, @"frame", nil];

    In CALayer’s actionForKey: method reference you can find how layer looks up for the actions to animated its properties.

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