Question

Application crash due to this reason -[NSConcreteValue doubleValue]: unrecognized selector sent to

Following code is used in my project and I search very and I get the reason due to transform but if I replace transform.scale to it then animation changed
help me!

[viewContent.layer addAnimation:[self getShakeAnimation] forKey:@"transform.scale"];

- (CAAnimation*)getShakeAnimation 
{ 
    CAKeyframeAnimation *animation = [CAKeyframeAnimation animation];

    animation.values = [NSArray arrayWithObjects:
                        [NSValue valueWithCATransform3D:CATransform3DMakeRotation(M_PI_2, 0.0f, 1.0f, 0.0f)],
                        [NSValue valueWithCATransform3D:CATransform3DMakeRotation(M_PI, 0.0f, 0.0f, 0.0f)],
                        [NSValue valueWithCATransform3D:CATransform3DMakeRotation(M_PI * 2, 0.0f, 1.0f, 0.0f)],nil];

 animation.duration = 0.8f;
 animation.delegate = self;


    return animation;
}

Answer 1

You’re adding an animation for the keypath transform.scale (a float) yet are passing in CATransform3Ds. You need to either correct your keypath or your input.