CALayer with rotation animation

I have masked an image like this开发者_Python百科:

UIView *maskImage; maskImage = [[UIView alloc] init];
maskImage.backgroundColor = UIColorFromRGB(FTRMaskColor);
maskImage.frame = newFrame;

CALayer *theLayer = [CALayer layer];
theLayer.contents = (id)[[UIImage imageNamed:@"image.png"] CGImage];
theLayer.frame = newFrame;

maskImage.layer.mask = theLayer;

It works fine but the main problem is if I want to rotate the my Ipad, the rotation animation of the view or the layer (I'm not very sure) doesn't work. It rotates without animation. Could you help, please?

To rotate a CALayer:

NSNumber *rotationAtStart = [myLayer valueForKeyPath:@"transform.rotation"];
CATransform3D myRotationTransform = CATransform3DRotate(myLayer.transform, myRotationAngle, 0.0, 0.0, 1.0);
myLayer.transform = myRotationTransform;        
CABasicAnimation *myAnimation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
myAnimation.duration = kMyAnimationDuration;
myAnimation.fromValue = rotationAtStart;
myAnimation.toValue = [NSNumber numberWithFloat:([rotationAtStart floatValue] + myRotationAngle)];
[myLayer addAnimation:myAnimation forKey:@"transform.rotation"];

myRotationAngle should be in radians. Use negative values for counter-clockwise rotation and positive values for clockwise.

        CAKeyframeAnimation *rotation = [CAKeyframeAnimation animation];
        rotation.keyPath = @"transform.rotation";
        rotation.values = @[ @0.14, @0,@0.2 ,@0];
        rotation.timingFunctions = @[
                                     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
                                     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
                                     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
                                     [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]
                                     ];
        rotation.fillMode            = kCAFillModeForwards;
        rotation.removedOnCompletion = NO;
        rotation.beginTime = AVCoreAnimationBeginTimeAtZero;
        [imageLayer addAnimation:rotation forKey:@"rotation"];

use CA3Daffinetransform to rotate