trouble with an animation - objective-c

Question

I subclassed a UIImageView. When it is double tapped, it will enlarge itself by 40%. I also have a UILabel that i place in the custom UIImageView and would like it to enlarge by 40%.
i can't seem to get it to animate correctly.
-(void)enlargeImage
{
CGPoint pointCenter = self.center;
CGPoint labelCenter = self.displayNameLabel.center;
[UIView animateWithDuration:1
delay:0
options:(UIViewAnimationOptionAllowUserInteraction)
animations:^{
self.frame = CGRectMake(self.frame.origin.x,
self.frame.origin.y,
self.frame.size.width * (1 + self.sizeMultiplier),
self.frame.size.height * (1 + self.sizeMultiplier));
// Commented out after setting the autoresizeMask on the label
/*
self.displayNameLabel.frame = CGRectMake(self.displayNameLabel.frame.origin.x,
self.displayNameLabel.frame.origin.y,
self.displayNameLabel.frame.size.width * (1 + self.sizeMultiplier),
self.displayNameLabel.frame.size.height * (1 + self.sizeMultiplier));
*/
self.layer.shadowOpacity = 1;
}
completion:^(BOOL finished)
{
[self callDelegateSelect];
}];
self.center = pointCenter;
//self.displayNameLabel.center = labelCenter;
//self.displayNameLabel.center = CGPointMake((self.frame.size.width / 2), (self.frame.size.height / 2));
self.isSelected = TRUE;
}
-(void)shrinkImageWithZoomScale:(float)zoomScale
{
CGPoint pointCenter = self.center;
CGPoint labelCenter = self.displayNameLabel.center;
[UIView animateWithDuration:1
delay:0
options:(UIViewAnimationOptionAllowUserInteraction)
animations:^{
self.frame = CGRectMake(self.frame.origin.x,
self.frame.origin.y,
(self.originalHeight / zoomScale),
(self.originalHeight / zoomScale));
// Commented out after setting the autoresizeMask on the label
/*
self.displayNameLabel.frame = CGRectMake(self.displayNameLabel.frame.origin.x,
self.displayNameLabel.frame.origin.y,
((self.originalLableHeight) / zoomScale),
((self.originalLableHeight) / zoomScale));
*/
self.layer.shadowOpacity = 0;
}
completion:^(BOOL finished)
{
[self callDelegateDeselect];
}];
self.center = pointCenter;
//self.displayNameLabel.center = labelCenter;
//self.displayNameLabel.center = CGPointMake((self.frame.size.width / 2), (self.frame.size.height / 2));
self.isSelected = FALSE;
}
the custom UIImageView animates exactly how i want it too, but the UILabel misbehaves.
unselected (UILabel's background is set to orange):
selected:
i'm guessing since the UIImageView's point reference is changing, its messing up the points i'm telling the UILabel to be?
EDIT:
the custom UIImageView's:
self.autoresizesSubviews = TRUE;
the subview UILabel:
self.displayNameLabel.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
this solves the sizing issue, but it does not grow from the center; when growing, it shifts right and animates left to the center. when shrinking, it shifts left and animates right to the center. I also commented out setting the label's frame in the animation code.

Answer 1

If the UILabel is a subview of the UIImageView, you could try to set the autoresizing options of the UILabel so that it resizes automatically when its superview does.
Also, make sure the autoresizesSubviews property of the UIImageView is set to YES (which is the default by the way).