CALayer animates with frame change?

Question

I have a CALayer I've added to my view:

myView.myCALayer = [[CALayer alloc] init]; CGSize size = myView.frame.size; myView.myCALayer.frame = CGRectMake(0, 0, size.width, size.height); myView.myCALayer.backgroundColor = [[UIColor blackColor] CGColor]; [myView.layer addSublayer:myView.myCALayer]; 

When I attempt to change the frame of the CALayer after changing the frame of myView, the resize of the CALayer animates. I have added no animation to the CALayer, so I don't understand this. I've even attempted to call removeAllAnimations on the layer before the resize and it still animates the resize.

Anyone know what could be going on here?

Answer 1

There is actually an implicit animation on setting some values for a CALayer. You have to disable the animations before you set a new frame.

[CATransaction begin]; [CATransaction setValue:(id)kCFBooleanTrue forKey:kCATransactionDisableActions];  [myView.myCALayer.frame = (CGRect){ { 10, 10 }, { 100, 100 } ];  [CATransaction commit]; 

https://developer.apple.com/library/content/documentation/Cocoa/Conceptual/CoreAnimation_guide/AdvancedAnimationTricks/AdvancedAnimationTricks.html#//apple_ref/doc/uid/TP40004514-CH8-SW3

Answer 2

In Swift 4:

CATransaction.begin() CATransaction.setDisableActions(true) /* Your layer / frame changes here */ CATransaction.commit()