I have a question about how to remove the Swift Blur.
at the same time PopUp View was removed with the following code:
I would like to remove the Blur Effect from Button.
import UIKit
classViewController:UIViewController {
/* PopUp View*/
@IBOutlet variableItemView:UIView!
/* Background Image*/
@IBOutlet weak varbackgroundImg: UIImageView!
/* Blur Effect*/
@ IBAction func BlurEffect(_sender:Any){
/* setting of addItemView*/
addItemView.center=self.view.center
/* Setting of Animation*/
self.backgroundImg.addBlurEffect()/*Blur*/
addItemView.transform=CGAffineTransform.init(scaleX:1.3, y:1.3)
addItemView.alpha = 0
UIView.animate(withDuration:0.4){
self.view.addSubview(self.addItemView)
self.addItemView.alpha=1
self.addItemView.transform=CGAffineTransform.identity
}
}
/* I want to remove blur effect*/
@ IBAction func removeBlurEffect(_sender:Any){
UIView.animate(withDuration: 0.3, animations: {
self.addItemView.transform=CGAffineTransform.init (scaleX: 1.3, y: 1.3)
self.addItemView.alpha = 0
}) {(success:Bool) in
self.addItemView.removeFromSuperview()
}
}
override func viewDidLoad(){
super.viewDidLoad()
addItemView.layer.cornerRadius=5
}
override funcdidReceiveMemoryWarning(){
super.didReceiveMemoryWarning()
}
}
extension UIImageView
{
funcaddBlurEffect(){
let blurEffect = UIBlurEffect (style: UIBlurEffectStyle.light)
let blurEffectView = UIVisualEffectView (effect: blurEffect)
blurEffectView.frame = self.bounds
blurEffectView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
self.addSubview (blurEffectView)
}
}
How do I remove the Blur multiplied by the extension function?
The URL of GitHub is as follows.
https://github.com/TakanoriHasebe/udemy-questions/tree/master/SwiftBlurEffect
Thank you for your understanding.
swift ios swift3
Now that you have added a method of blurring the UIImageView using Extension, it is natural to define a method of removing blur in Extension.
extension UIImageView {
funcaddBlurEffect(){
.... (omitted)....
}
func removeBlurEffect(){
// For all UIImageView subviews, click
self.subviews.forEach {
// A subview that can cast a type into a UIVisualEffectView, i.e., a type of UIVisualEffectView, is a subview that can be used as a
iflet effectView=$0 as ?UIVisualEffectView{
// Remove from superview.
effectView.removeFromSuperview()
}
}
}
You can remove the Blur by running backgroundImg.addBlurEffect() to apply Blur.backgroundImg.removeBlurEffect().
How do I remove the Blur?
Knowing that is what you did to apply Blur.Why don't we do the opposite?This is also a natural way of thinking.
Since self.addSubview(blurEffectView) and UIImageView were blurred by addSubview(), the hypothesis is that removeFromSuperview() might remove the blur.All you have to do is verify it.
CGAffineTransform.init (scaleX: 1.3, y: 1.3)
Initiator formats are special and should be distinguished from general method (function) formats.
init(scaleX:y:)
If you put it in the reference like this,
CGAffineTransform (scaleX: 1.3, y: 1.3)
and
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