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添加UIVisualEffectView
by 伍雪颖
let bgView : UIImageView = UIImageView(image: UIImage(named: "1.jpg"))
bgView.frame = self.view.bounds
self.view.addSubview(bgView)
let blurEffect: UIBlurEffect = UIBlurEffect(style: .Light)
let blurView: UIVisualEffectView = UIVisualEffectView(effect: blurEffect)
blurView.frame = CGRectMake(50, 50, self.view.frame.width - 100, 200)
self.view.addSubview(blurView)标签：
原文地址：http://blog.csdn.net/rainlesvio/article/details/46424391
