Remove BlurView in swift

Question

I have a UIView that contains buttons and labels. When these buttons are pressed, this UIView will become blur using the code below.

@IBOutlet weak var blurView: UIView!
var blurEffect = UIBlurEffect(style: UIBlurEffectStyle.Dark)
var blurEffectView = UIVisualEffectView(effect: blurEffect)
blurEffectView.frame = blurView.bounds
blurView.addSubview(blurEffectView)

However, I want to remove the blur effect later on. What is the code for removing the blurred UIView?

score 14 · Accepted Answer · answered Nov 03 '15 at 16:59

14

It's hard to know exactly what is going on in your code, as you've clearly posted a cut up version (the last 4 lines are part of a method somewhere, presumably).

You could do something like this to remove all UIVisualEffectView subviews from your blurView:

for subview in blurView.subviews {
    if subview is UIVisualEffectView {
        subview.removeFromSuperview()
    }
}

answered Nov 03 '15 at 16:59

Charles A.

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4

you can add a tag to the view and use viewWithTag: so you don't have to iterate and identify the correct view just in case you have multiple UIVisualEffectView – n3wb May 07 '17 at 16:28

score 0 · Answer 2 · answered Mar 19 '20 at 16:25

func addBlurEffect(view: UIView, style: UIBlurEffect.Style) {
    view.backgroundColor = UIColor.clear

    let blurEffect = UIBlurEffect(style: style)
    let blurEffectView = UIVisualEffectView(effect: blurEffect)
    blurEffectView.frame = view.bounds
    blurEffectView.tag = 9
    view.insertSubview(blurEffectView, at: 0)
}

func removeBlurEffect(view: UIView){
    view.viewWithTag(9)?.removeFromSuperview()
}

Remove BlurView in swift

2 Answers2