动画

 

    [UIViewbeginAnimations:nilcontext:nil];  

[UIViewsetAnimationDuration:2];  

[UIViewsetAnimationDelegate:self];

 

    

CAKeyframeAnimation * animation; 

animation = [CAKeyframeAnimationanimationWithKeyPath:@"transform"]; 

animation.duration = 2; 

animation.delegate = self;

animation.removedOnCompletion = NO;

animation.fillMode = kCAFillModeForwards;

NSMutableArray *values = [NSMutableArrayarray];

[values addObject:[NSValuevalueWithCATransform3D:CATransform3DMakeScale(0.1, 0.1, 1.0)]];

[values addObject:[NSValuevalueWithCATransform3D:CATransform3DMakeScale(1.2, 1.2, 1.0)]]; 

[values addObject:[NSValuevalueWithCATransform3D:CATransform3DMakeScale(0.4, 0.6, 0.2)]]; 

[values addObject:[NSValuevalueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 1.0)]];

animation.values = values;

[self.view.layer addAnimation:animation forKey:nil];

    [UIViewcommitAnimations];