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我知道如何在 UIAlertController 中添加模糊背景，但不幸的是我无法找到添加背景的方法。

使用 UIAlertController 添加模糊背景的基本编码；

 // Blur
    let blurEffect = UIBlurEffect(style: .light)
    let blurVisualEffectView = UIVisualEffectView(effect: blurEffect)
    blurVisualEffectView.frame = view.bounds

    // UIAlertController
    let alertController = UIAlertController.init(title: "Title", message: "Message", preferredStyle: .alert)

    alertController.addAction(UIAlertAction(title: "Ok", style: .default, handler: { (action: UIAlertAction!) in
        print("Handle Ok logic here")
        blurVisualEffectView.removeFromSuperview()
    }))

    alertController.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: { (action: UIAlertAction!) in
        print("Handle Cancel Logic here")
        blurVisualEffectView.removeFromSuperview()
    }))
    self.view.addSubview(blurVisualEffectView)
    self.present(alertController, animated: true, completion: nil)

但是，这里是 SKStoreReviewController

 if let scene = UIApplication.shared.connectedScenes.first(where: { $0.activationState == .foregroundActive }) as? UIWindowScene {
                     
    // Blur
     let blurEffect = UIBlurEffect(style: .light)
     let blurVisualEffectView = UIVisualEffectView(effect: blurEffect)
     blurVisualEffectView.frame = view.bounds
                
                
     SKStoreReviewController.requestReview(in: scene)
                  
     self.view.addSubview(blurVisualEffectView)
 }

添加模糊背景是成功的，但它是警报弹出之前的早期流行模糊背景，我关闭它不会让我删除模糊所以知道吗？

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