there is a bug with parallaxHeaderViewWithSubView:

[heyehao2008]

hi, thanks for your code
i attempt to use this method to creat a headerView. my subView has a button for login. when i clicked login button to push to loginViewController and back to root, the bluredImageView is malposition.

finally，i fix this bug by following code：

• (void)refreshBlurViewForNewImage
  {
  UIImage *screenShot;
  if (self.subView) {
  screenShot = [self getImageFromView:self.subView];
  }else{
  screenShot = [self getImageFromView:self];
  }
  screenShot = [screenShot applyBlurWithRadius:5 tintColor:[UIColor colorWithWhite:0.6 alpha:0.2] saturationDeltaFactor:1.0 maskImage:nil];
  self.bluredImageView.image = screenShot;
  self.bluredImageView.alpha = 0.0f;
  }

and , i find the screenShot method in the code always flicker when it is called, so i instead of method :
-(UIImage *)getImageFromView:(UIView *)orgView{
UIGraphicsBeginImageContext(orgView.bounds.size);
[orgView.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
Forgive my rude，may it's my own mistack, thancks a lot.

[Vinodh-G]

Hi Ronda,
Thanks for the feedback, I will look into the malpositioning issue.

I have few thing regarding the glitch, use afterScreenUpdates to NO instead of YES as shown below
[self drawViewHierarchyInRect:kDefaultHeaderFrame afterScreenUpdates:NO]

[view.layer renderInContext:UIGraphicsGetCurrentContext()] is CALayer level rendering the view image.
Apple as introduced drawViewHierarchyInRect: for UIView class from iOS 7 onwards, for view rendering and it tell thats it is much more faster than renderInContext: of Layer class, so the glitch may fix with telling NO to [view drawViewHierarchyInRect:rect afterScreenUpdates:NO] instead of using renderInContext

Thanks,
Vinodh

[heyehao2008]

Thanks for you guide. I got it !