addSubview so lag

[fung199609]

When I add the shadowContainerView be the subview.
It's so slow and feel lag.

ShadowView *shadowContainerView = [[ShadowView alloc] init];
shadowContainerView.frame = self.bounds;
shadowContainerView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight);
shadowContainerView.shadowOffset = CGSizeMake(0, self.shadowOffset);
shadowContainerView.shadowRadius = self.radius;
shadowContainerView.shadowScale = 0.9;

CGRect frame = self.frame;
frame.size.height = self.height+self.shadowOffset;
self.frame = frame;

[self addSubview: shadowContainerView]; //this line make the program so slow and lag
[shadowContainerView addSubview:_frontImgView];
_frontImgView.center = shadowContainerView.center;

[PierrePerrin]

Hi, sorry for the late response. Do you actually found a way to make things smoother?
At which moment do you add the subview in your View?
The shadow radius is a demanding parameter, did you try to low it down?

Pierre

[fung199609]

no. it still lag about 1 second