UIView animateWithDuration doesn't animate cor

Question

I'm trying to animate the change of the cornerRadius of a UIView instance layer, but the variation of the cornerRadius takes place immediately.

Here's the code:

UIView *view = [[UIView alloc] initWithFrame:CGRectMake(10, 10, 100, 100)];
view.layer.masksToBounds = YES;
view.layer.cornerRadius = 10.0;
[UIView animateWithDuration:1.0 animations:^{

    [view.layer.cornerRadius = 0.0;

}];

Thanks everybody who is going to give me any tips.

EDIT:

I managed to animate this property using Core Animation, using a CABasicAnimation.

CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"cornerRadius"];
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
animation.fromValue = [NSNumber numberWithFloat:10.0f];
animation.toValue = [NSNumber numberWithFloat:0.0f];
animation.duration = 1.0;
[viewToAnimate.layer addAnimation:animation forKey:@"cornerRadius"];
[animation.layer setCornerRadius:0.0];

Answer 1

A corner radius variation can be animated but the only way to do so is to use a CABasicAnimation. Hope this helps somebody out there.

Answer 2

You can implement UIView animation as here: http://maniacdev.com/2013/02/ios-uiview-category-allowing-you-to-set-up-customizable-animation-properties

CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"cornerRadius"];
animation.duration = DURATION;
animation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
animation.toValue = @(NEW_CORNER_RADIUS);
animation.fillMode = kCAFillModeForwards;
animation.removedOnCompletion = NO;
[view.layer addAnimation:animation forKey:@"setCornerRadius:"];