How do you move a CALayer instantly (without animation)

Question

I'm trying to drag a CALayer in an iOS app.

As soon as I change its position property it tries to animate to the new position and flickers all over the place:

 layer.position = CGPointMake(x, y)

How can I move CALayers instantly? I can't seem to get my head around the Core Animation API.

Answer 1

You want to wrap your call in the following:

[CATransaction begin]; 
[CATransaction setValue: (id) kCFBooleanTrue forKey: kCATransactionDisableActions];
layer.position = CGPointMake(x, y);
[CATransaction commit];