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tvOS 14 UIBlurEffect crash
With the following code it works in tvOS 14 and higher:
import UIKit
@IBDesignable class VisualEffect: UIVisualEffectView {
var _blurRadius: CGFloat = 90
var _style: UIBlurEffect.Style = .dark
@IBInspectable var blurRadius: CGFloat {
get {
return _blurRadius
} set (radius) {
if(_blurRadius != radius) {
_blurRadius = radius
if #available(tvOS 14.0, *) {
let neweffect = BlurEffektView.effect(with: _style)
neweffect.blurRadius = blurRadius
effect = neweffect
blurEffect = neweffect}
} else {
blurEffect.setValue(radius, forKey: "blurRadius")
}
}
}
/// Blur effect for tvOS >= 14
private lazy var customBlurEffect_tvOS14: BlurEffektView = {
let effect = BlurEffektView.effect(with: .dark)
effect.blurRadius = blurRadius
return effect
}()
/// Blur effect for tvOS < 14
private lazy var customBlurEffect: UIBlurEffect = {
return (NSClassFromString("_UICustomBlurEffect") as! UIBlurEffect.Type).init()
}()
private var blurEffect: UIBlurEffect!
override init(effect: UIVisualEffect?) {
guard let effect = effect as? UIBlurEffect else {
fatalError("Effect must be of class: UIBlurEffect")
}
super.init(effect: effect)
sharedSetup(effect: effect)
self.effect = blurEffect
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
var effect: UIBlurEffect
if #available(tvOS 14.0, *) {
effect = customBlurEffect_tvOS14
} else {
effect = customBlurEffect
}
sharedSetup(effect: effect)
self.effect = blurEffect
}
private func sharedSetup(effect: UIBlurEffect, radius: CGFloat = 90) {
let raw = effect.value(forKey: "_style") as! Int
let style = UIBlurEffect.Style(rawValue: raw)!
if #available(tvOS 14.0, *) {
let newEffect = BlurEffektView.effect(with: style)
newEffect.blurRadius = blurRadius
let subviewClass = NSClassFromString("_UIVisualEffectSubview") as? UIView.Type
let visualEffectSubview: UIView? = self.subviews.filter({ type(of: $0) == subviewClass }).first
visualEffectSubview?.backgroundColor = UIColor.clear
self.blurEffect = newEffect
} else {
let UICustomBlurEffect = NSClassFromString("_UICustomBlurEffect") as! UIBlurEffect.Type
let newEffect = UICustomBlurEffect.init(style: style)
newEffect.setValue(1.0, forKey: "Scale")
newEffect.setValue(radius, forKey: "blurRadius")
newEffect.setValue(UIColor.clear, forKey: "colorTint")
self.blurEffect = newEffect
}
}
}