xCode - UIVisualEffectView animating - ios

Question

I've an issue while animating a VisualEffetView.
Here is the code where I declare it.
UIBlurEffect* blur = [UIBlurEffect effectWithStyle:UIBlurEffectStyleLight];
effectView = [[UIVisualEffectView alloc] initWithEffect:blur];
effectView.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
effectView.frame = self.bounds;
self.layer.borderWidth = 1;
[self addSubview:effectView];
When I animate the superview to make it grow, the Visual Effect follow the animation of the superview, but when I want to reduce it, the Visual Effect disappear instantly making the result very ugly ^^
Here is the code where I animate the superview (called recherche here)
[UIView animateWithDuration:0.3f
delay:0.0f
options:UIViewAnimationOptionTransitionNone
animations:^{
CGRect f = recherche.frame;
f.size.height = 0;
[recherche setFrame:f];
}
completion:^(BOOL finished){
[recherche removeFromSuperview];
recherche = nil;
}];
Here is what I have when I make recherche disappear. The white square seems to be the Effect View because the color changes if I change the UIBlurEffectStyle. But blurring effect is missing x)

Answer 1

From above understanding, I figure out that you just need to reset height of effect view to achieve what you want.
Added code in animation block:
Check and let me know, is it full fill your expectation.
[UIView animateWithDuration:0.3f
delay:0.0f
options:UIViewAnimationOptionTransitionNone
animations:^{
CGRect f = recherche.frame;
f.size.height = 0;
[recherche setFrame:f];
// Add this lines
CGRect effectViewFrame = effectView.frame;
effectView.size.height = 0;
effectView.frame = effectViewFrame;
}
completion:^(BOOL finished){
[recherche removeFromSuperview];
recherche = nil;
}];