Blur behind UIImage not going away after image is dismissed - ios

Question

I've been trying to add a blur effect behind an image after I tap on it, however, it is not going away after I dismiss the image. The blur doesn't disappear.
func didTapImageView(_ sender: UITapGestureRecognizer) {
let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.dark)
let blurEffectView = UIVisualEffectView(effect: blurEffect)
blurEffectView.frame = self.view.frame
let imageView = sender.view as! UIImageView
let newImageView = UIImageView(image: imageView.image)
newImageView.frame = self.view.frame
newImageView.layer.masksToBounds = true
//newImageView.backgroundColor = UIColor.black.withAlphaComponent(1)
newImageView.contentMode = UIViewContentMode.scaleAspectFit
newImageView.isUserInteractionEnabled = true
let tap = UITapGestureRecognizer(target: self, action: #selector(dismissFullscreenImage))
newImageView.addGestureRecognizer(tap)
//blurEffectView.addGestureRecognizer(tap)
self.view.addSubview(blurEffectView)
self.view.addSubview(newImageView)
}
func dismissFullscreenImage(_ sender: UITapGestureRecognizer) {
sender.view?.removeFromSuperview()
}
How can I remove the blur after the tap? and also, how do I make it full screen? it doesn't seem to be working that either.

Answer 1

It looks to me like when you call dismissFullScreenImage you are only removing the UIImageView from the superview. The blurEffectView is a separate subview entirely. You'll have to set a property for the effect view and then remove it when you call for the image to be removed. At the top of your class say something like like:
var blurEffectView:UIVisualEffectView!
Then in your didTapImageView:
let blurEffect = UIBlurEffect(style: UIBlurEffectStyle.dark)
blurEffectView = UIVisualEffectView(effect: blurEffect)
blurEffectView.frame = self.view.frame
Then when you call dismissFullScreenImage, you need to say something like :
func dismissFullscreenImage(_ sender: UITapGestureRecognizer) {
sender.view?.removeFromSuperview()
blurEffectView.removeFromSuperview()
}
I don't know what you mean "how do I make it fullscreen?" .. The visual effect already is fullscreen. At least it looks that way on your screenshot.