Disabling animation when changing layer/view properties?

Question

I composed a kind of animation by adding several layers to a UIView. Those layers shall be set visible or invisible by a script.

The script is based on objects that impl

Answer 1

Just wrap the code where you are making the change.

[CATransaction begin];
[CATransaction setAnimationDuration:0];

[thelayer setAlpha:0];

[CATransaction commit];