iOS: performance issues with visual effects

[Andrew Henshaw]

Have you tried firing it off touchstart instead of touchend or mouseup.  I find that gains a little performance.



On 17 Jan 2012, at 21:14, William de Smet wrote:

> Hi Chris,
> 
> I am experiencing the same thing (iPad 1) here with LC 5.02.
> 
> I just use:
> visual effect push left
> go cd "start"
> 
> There is no delay in the IDE but there is with an compiled app on iOS 5.
> Sadly I don't have an solution :-( .........
> 
> 
> groeten,
> 
> William
> 
> 
> 
> 2012/1/17 Chris Sheffield <cmsheffield at me.com>
>> 
>> 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.
>> 
>> Thanks,
>> Chris
>> 
>> --
>> Chris Sheffield
>> Read Naturally, Inc.
>> www.readnaturally.com
>> 
>> 
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