首先引入框架：QuartzCore.framework
在头文件声明：CALayer?*logoLayer
{
//界限
CABasicAnimation?*boundsAnimation = [CABasicAnimationanimationWithKeyPath:@"bounds"];
boundsAnimation.fromValue?= [NSValue?valueWithCGRect:logoLayer.bounds];
boundsAnimation.toValue?= [NSValue?valueWithCGRect:CGRectZero];
//透明度变化
CABasicAnimation?*opacityAnimation = [CABasicAnimationanimationWithKeyPath:@"opacity"];
opacityAnimation.fromValue?= [NSNumber?numberWithFloat:1.0];
opacityAnimation.toValue?= [NSNumber?numberWithFloat:0.5];
//位置移动
CABasicAnimation?*animation? = [CABasicAnimation animationWithKeyPath:@"position"];
animation.fromValue?= ?[NSValue valueWithCGPoint:logoLayer.position];
CGPoint?toPoint =logoLayer.position;
toPoint.x?+=?180;
animation.toValue?= [NSValue?valueWithCGPoint:toPoint];
//旋转动画
CABasicAnimation* rotationAnimation =
[CABasicAnimation animationWithKeyPath:@"transform.rotation.z"];//"z"还可以是“x”“y”，表示沿z轴旋转
rotationAnimation.toValue?= [NSNumber numberWithFloat:(2?*?M_PI) *?3];
// 3 is the number of 360 degree rotations
// Make the rotation animation duration slightly less than the other animations to give it the feel
// that it pauses at its largest scale value
rotationAnimation.duration?=?2.0f;
rotationAnimation.timingFunction?= [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];//缓入缓出
//缩放动画
CABasicAnimation?*scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale"];
scaleAnimation.fromValue?= [NSNumber?numberWithFloat:0.0];
scaleAnimation.toValue?= [NSNumber?numberWithFloat:1.0];
scaleAnimation.duration?=?2.0f;
scaleAnimation.timingFunction?= [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
CAAnimationGroup?*animationGroup = [CAAnimationGroup animation];
animationGroup.duration?=?2.0f;
animationGroup.autoreverses?=?YES;//是否重播，原动画的倒播
animationGroup.repeatCount?=NSNotFound;//HUGE_VALF; ? ? //HUGE_VALF,源自math.h
[animationGroup?setAnimations:[NSArray?arrayWithObjects:rotationAnimation, scaleAnimation,?nil]];
//将上述两个动画编组
[logoLayer?addAnimation:animationGroup?forKey:@"animationGroup"];
}
//去掉所有动画
[logoLayer removeAllAnimations];
//去掉key动画
[logoLayer removeAnimationForKey:@"animationGroup"];
