Adding a blur Effect View

AddBlurEffectView.swift

 let blurredEffectView:UIVisualEffectView = {
        let blurEffect = UIBlurEffect(style: .dark)
        let blurredEffectView = UIVisualEffectView(effect: blurEffect)
        blurredEffectView.translatesAutoresizingMaskIntoConstraints = false
        return blurredEffectView
 }()    

func setupBlurView() {
        self.view.addSubview(blurredEffectView)
        
        //Set constraints
        NSLayoutConstraint.activate([
            blurredEffectView.topAnchor.constraint(equalTo: self.view.topAnchor),
            blurredEffectView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor),
            blurredEffectView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor),
            blurredEffectView.bottomAnchor.constraint(equalTo: self.view.bottomAnchor)
        ])
    }