Add a sublayer to a CALayer without animation?

Question

How can I add a sublayer to a CALayer without animation? Usually when you add one it "fades in" and when you remove one it "fades out".

How to supress the animation?

score 6 · Accepted Answer · answered Jul 26 '10 at 20:23

6

Have you tried this:

[CATransaction begin];
[CATransaction setValue:(id)kCFBooleanTrue
                 forKey:kCATransactionDisableActions];
[layer addSublayer:sublayer];
[CATransaction commit];

from the Apple docs?

answered Jul 26 '10 at 20:23

Matt Long

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This should work, but note that as of iPhone OS 3.0 you can simply do [CATransaction setDisableActions:YES]; – Jason Foreman Jul 27 '10 at 02:57
Yep. Good point. Wish we could get an update to the Apple docs. ;-) – Matt Long Jul 27 '10 at 04:07

score 2 · Answer 2 · edited May 23 '17 at 12:19

2

You can also suppress implicit layer addition animations by setting the actions dictionary on the superlayer, like I describe in this answer:

NSMutableDictionary *newActions = [[NSMutableDictionary alloc] initWithObjectsAndKeys:[NSNull null], @"sublayers", nil];
superlayer.actions = newActions;
[newActions release];

edited May 23 '17 at 12:19

Community

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1

answered Aug 10 '10 at 20:38

Brad Larson

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Ziad Tamim · Answer 3 · 2013-07-21T17:27:51.490

0

You can use

[CATransaction setAnimationDuration:0.0f];

edited Jul 21 '13 at 17:27

answered Jul 21 '13 at 15:40

Ziad Tamim

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please use a word like "can" instead of "need" when there are other available solutions that don't *need* to do it – David Rönnqvist Jul 21 '13 at 15:49

Add a sublayer to a CALayer without animation?

3 Answers3