CAAnimation isn't that complicated.
CABasicAnimation * alphaAnimation = [CABasicAnimation
animationWithKeyPath:@"opacity"];
alphaAnimation.delgate = self;
alphaAnimation.removedOnCompletition = YES;
alphaAnimation.autoreverses = NO;
alphaAnimation.timingFunction = [CAMediaTimingFunction
functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
alphaAnimation.duration = 1.0f;
alphaAnimation.toValue = [NSNumber numberWithFloat:0.0];
[myView.layer addAnimation:alphaAnimation forKey:@"opacityAnimation"];
then you can implement the delegate's method
- (void)animationDidStop:(CAAnimation *)theAnimation finished:(BOOL)flag
and do whatever you need there after completition
Note: remember to put your view to acceptLayer to YES;
you can change that property anytime, but don't do it so ofthen :P
I hope it helps
BTW I wrote this on mail app so I hadn't compile it or run it.
On May 20, 2011, at 12:35 PM, Nick wrote:
> This sample works exactly as mine - the button remains on the screen
> completely opaque and the suddenly disappears after 0.25 secs pass.
> (Snow Leopard)
>
> So i guess unless i find time to read that huge guide about Core
> Animation and manage to adapt CAAnimation, i will use that approach
> with [[myview animator] setAlphaValue:0.0]; and a timer that hides the
> view, which was suggested by Chase
>
>
> 2011/5/20 Quincey Morris <quinceymor...@earthlink.net>:
>> On May 19, 2011, at 15:01, Nick wrote:
>>
>>> No, only fade out (and fade in) effects are needed. I just added frame
>>> movement to see if animation works at all. Animation does work, but
>>> the fade does not happen - no matter, if the frame is moved
>>> simultaneously or not.
>>
>> Here's my actual code for doing this. It works.
>>
>>> NSMutableArray* dictionaries = [NSMutableArray array];
>>>
>>> // Create a dictionary for the animation parameters
>>>
>>> NSMutableDictionary* dictionary = [NSMutableDictionary
>>> dictionaryWithObject: subview forKey: NSViewAnimationTargetKey];
>>> [dictionaries addObject: dictionary];
>>>
>>> // Add a key for the target frame rect, if necessary
>>>
>>> if (!shouldBeHidden || !NSEqualRects (oldFrameRect, newFrameRect))
>>> [dictionary setObject: [NSValue valueWithRect: newFrameRect]
>>> forKey: NSViewAnimationEndFrameKey];
>>>
>>> // If the visibility is changing, add a key for the fade in or
>>> out
>>>
>>> if (!isHidden != !shouldBeHidden)
>>> {
>>> [dictionary setObject: shouldBeHidden ?
>>> NSViewAnimationFadeOutEffect : NSViewAnimationFadeInEffect forKey:
>>> NSViewAnimationEffectKey];
>>>
>>> // Work around a Snow Leopard bug ...
>>>
>>> if (!shouldBeHidden)
>>> [subview setHidden: shouldBeHidden];
>>> }
>>>
>>> // Create the animation
>>>
>>> NSViewAnimation* viewAnimation = [[NSViewAnimation alloc]
>>> initWithViewAnimations: dictionaries];
>>>
>>> viewAnimation.duration = 0.25;
>>> viewAnimation.animationCurve = NSAnimationEaseIn;
>>>
>>> [viewAnimation startAnimation];
>>
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