Calling -display fixed the problem, works perfectly. Thanks!
On 2011-06-18, at 9:25 AM, Houdah - ML Pierre Bernard wrote:
> Try calling -display after -setWantsLayer:
>
> The view needs to be drawn once into the layer before being able to animate.
>
> Another way of achieving the desired result is to draw the initial and target
> view into images and then animate the swapping of image views.
>
> Best,
> Pierre Bernard
> Houdah Software s.à r.l.
>
> On Jun 18, 2011, at 6:33 AM, Indragie Karunaratne wrote:
>
>> Super late reply here, but I just tried that and it still doesn't work. It
>> seems to work every now and then randomly but other times it doesn't work at
>> all. Sounds like some sort of timing issue.
>>
>> On 2011-05-18, at 1:04 AM, Josh Abernathy wrote:
>>
>>> Try doing the animation one runloop after calling -setWantsLayer:, kinda
>>> like this (typed in Mail):
>>>
>>> - (void)doAnimation {
>>> [parentView setWantsLayer:YES];
>>> [self performSelector:@selector(noSeriouslyDoTheAnimation) withObject:nil
>>> afterDelay:0];
>>> }
>>>
>>> - (void) noSeriouslyDoTheAnimation {
>>> CATransition *transition = [CATransition animation];
>>> transition.type = kCATransitionPush;
>>> transition.subtype = kCATransitionFromLeft;
>>> transition.timingFunction = [CAMediaTimingFunction
>>> functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
>>> [CATransaction begin];
>>> [CATransaction setCompletionBlock:^(void) {
>>> [parentView setWantsLayer:NO];
>>> }];
>>> [parentView setAnimations:[NSDictionary dictionaryWithObject:transition
>>> forKey:@"subviews"]];
>>> [[parentView animator] replaceSubview:firstView with:secondView];
>>> [CATransaction commit];
>>> }
>>>
>>>
>>> On May 17, 2011, at 7:59 PM, Indragie Karunaratne wrote:
>>>
>>>> Hi all,
>>>>
>>>> I'm trying to use CATransition in my app to provide an animated slide
>>>> transition when swapping views. I don't want to permanently layer back my
>>>> views because they cause various glitches (no subpixel antialiasing,
>>>> resize issues when backed with a CATiledLayer, etc.) To get around this, I
>>>> want to temporarily layer back my view, run the animation, and then
>>>> disable layer backing after the animation completes. This is my code thus
>>>> far:
>>>>
>>>> CATransition *transition = [CATransition animation];
>>>> transition.type = kCATransitionPush;
>>>> transition.subtype = kCATransitionFromLeft;
>>>> transition.timingFunction = [CAMediaTimingFunction
>>>> functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
>>>> [parentView setWantsLayer:YES];
>>>> [CATransaction begin];
>>>> [CATransaction setCompletionBlock:^(void) {
>>>> [parentView setWantsLayer:NO];
>>>> }];
>>>> [parentView setAnimations:[NSDictionary dictionaryWithObject:transition
>>>> forKey:@"subviews"]];
>>>> [[parentView animator] replaceSubview:firstView with:secondView];
>>>> [CATransaction commit];
>>>>
>>>> With this code, the animation doesn't run (the views just get swapped
>>>> without animation but the completion block is still called). The problem
>>>> seems to be the fact that I'm calling -setWantsLayer: immediately before
>>>> the animation begins. If I call this method in -awakeForNib, the animation
>>>> will run. I'm thinking that this might be some sort of runloop issue, but
>>>> I have no idea what I can do to work around this. I've tried moving my
>>>> -setWantsLayer: call to various places within the animation method but
>>>> this has no effect.
>>>>
>>>> Any help is greatly appreciated.
>>>> Thanks,
>>>> Indragie
>>>> --------
>>>> http://indragie.com _______________________________________________
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>>>
>>
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>
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