Question

我有一个UIView，我在viewDidLoad设置了它的框架。然后我使用blurBackgroundForView函数来模糊它：

override func viewDidLoad() {
  super.viewDidLoad()
  view.frame = CGRectMake(0, superView.frame.maxY-height, superView.frame.width, height)
  // The view is supposed to peak in from the bottom 
  AnimationHelper.blurBackgroundForView(view)
}

static func blurBackgroundForView(view: UIView!){
  view.backgroundColor = .clearColor()
  let blurEffect = UIBlurEffect(style: .Light)
  let blurEffectView = UIVisualEffectView(effect: blurEffect)
  blurEffectView.frame = view.frame
  view.insertSubview(blurEffectView, atIndex: 0)
  }
}

问题是UIView的背景是不模糊。当我将blurBackgroundView(view)的函数调用移到view.frame = ...之上时我看到一个模糊的视图，但模糊的视图要大得多。

Answer 1

blurEffectView的框架应为CGRectMake（0,0，superview.frame.width，height）

UIBlurEffect在我的UIView上没有按预期工作

1 个答案: