iOS: performance issues with visual effects
iowahengst at mac.com
Tue Jan 17 15:30:23 CST 2012
I've not had that problem with visual effects… I've had problems with code not being called after an effect.
However, I have had trouble with audio causing a delay that "sounds" like the problem you're having. Just for my curiosity, have you tried removing the audio call and leaving everything else?
On Jan 17, 2012, at 2:27 PM, Chris Sheffield wrote:
> Working on an iPad app that uses visual effects in a few places to make things a little more pleasing for the user. But I'm noticing some strange lags between the time I tap and the time the effect actually happens.
> For example, in one place I have a text field set up with several different "links". The user taps a link, and then a "window" pops up to show a definition of the tapped word and play an audio file. When I show/hide the "window" I'm using a dissolve visual effect:
> show/hide group "window" with visual effect dissolve very fast
> The effect happens, but sometimes there is a 2 or 3 second delay between the tap on the screen and the change on the screen. There is some code that runs inside a linkClicked handler before the group is shown, but nothing that should take that long. And if I remove the visual effect, the "window" displays almost instantly. Something is occurring as part of displaying the visual effect that is taking longer than expected.
> So the question is, is there anything I can do to improve this? I've already set the layerMode to "dynamic" where appropriate, but this doesn't seem to make much difference in this case. Maybe I haven't set the property on the correct objects? Some visual effects seem to work just fine, like the basic push and reveal effects. But I have also noticed this somewhat with the curl effects. Has anyone else experienced this? Any suggestions to improve performance?
> Currently working on an iPad 1, btw.
> Chris Sheffield
> Read Naturally, Inc.
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