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Editorial Team
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Asked: 2026-05-13T09:05:59+00:00

I am working on an application which needs to rotate the slider at one

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I am working on an application which needs to rotate the slider at one end. However, by using CGAffineTransformMakeRotation(), I can only rotate the slider at the centre.

What should I do in order to rotate the slider at the end point? If possible, please give a short paragraph of sample code. Thanks a lot.

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  1. Editorial Team

    I rotate a UIImageView by setting the anchorPoint property for the view’s layer. e.g. 

    myView.layer.anchorPoint = CGPointMake(0.5, 1.0);

    and then applying a CATransform3DRotate as the layer’s transform property

    CATransform3D rotationTransform = CATransform3DIdentity;
rotationTransform = CATransform3DRotate(rotationTransform, positionInRadians, 0.0, 0.0, 1.0);
myView.layer.transform = rotationTransform;

    I found this from Apple’s metronome example, so it’s worth checking that out. Hope that helps

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