CALayer 缩放动画

//放大

? ? ? ? CAKeyframeAnimation* animation = [CAKeyframeAnimation animationWithKeyPath:@"transform"];

? ? ? ? NSMutableArray *values = [NSMutableArray array];

? ? ? ? [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.9f, 0.9f, 1.0f)]];

? ? ? ? [values addObject:[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0f, 1.0f, 1.0f)]];

? ? ? ? animation.values = values;

? ? ? ? animation.duration = duration;

? ? ? ? animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseIn];

? ? ? ? [aLayer addAnimation:animation forKey:@"transform"];

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该代码可实现CAlayer的缩放