Question

我试图像这样绕过UIVisualEffectView的两个顶角：

    if let tabBarHeight = self.tabBarController?.tabBar.frame.height {
        mainViewHeight = self.view.frame.height - tabBarHeight
    }

    let oneAndHalfMainViewHeight = mainViewHeight * 1.5
    midStateHeight = mainViewHeight/2 - midStateConstant
    let blur = UIBlurEffect(style: .dark)
    slideView = UIVisualEffectView(effect: blur)
    slideView.translatesAutoresizingMaskIntoConstraints = false
    slideView.contentView.backgroundColor = Tools.colorPicker(2, alpha: 1)
    self.view.addSubview(slideView)

    let slideViewHorizontalConstraints = NSLayoutConstraint.constraints(withVisualFormat: "H:|[slideView(\(UIScreen.main.bounds.width))]|", options: NSLayoutFormatOptions(), metrics: nil, views: ["slideView" : slideView])
    slideViewHeightConstraint = NSLayoutConstraint(item: slideView, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: oneAndHalfMainViewHeight)
    slideViewTopConstraint = NSLayoutConstraint(item: self.view, attribute: .bottom, relatedBy: .equal, toItem: slideView, attribute: .top, multiplier: 1, constant: alwaysVisibleHeight)
    self.view.addConstraints(slideViewHorizontalConstraints)
    guard let slideViewHeightConstraint = slideViewHeightConstraint, let slideViewTopConstraint = slideViewTopConstraint else {
        return
    }
    self.view.addConstraint(slideViewHeightConstraint)
    self.view.addConstraint(slideViewTopConstraint)

    mainViewHeight = self.view.frame.height
    midStateHeight = mainViewHeight/2 - midStateConstant
    slideViewHeightConstraint.constant = oneAndHalfMainViewHeight

    let maskLayer = CAShapeLayer()
    let roundedRect = CGRect(x: 0, y: 0, width: view.bounds.width, height: oneAndHalfMainViewHeight)
    maskLayer.frame = roundedRect
    maskLayer.path = UIBezierPath(roundedRect: roundedRect, byRoundingCorners: [.topLeft, .topRight], cornerRadii: CGSize(width: 10, height: 10)).cgPath

    let frame = CGRect(x: 0, y: 0, width: view.bounds.width, height: oneAndHalfMainViewHeight)
    let maskView = UIView(frame: frame)

    maskView.layer.addSublayer(maskLayer)
    slideView.mask = maskView

当我在iPhone 7上试用它时，它按预期工作，但在iPhone 7 Plus的模拟器上没有显示视觉效果，我没有真正的iPhone 7 Plus试用它。模拟器显示了iPhone 5s，SE，6和7的效果。所以我想知道我的代码是否存在问题，考虑到巨大的尺寸或者是模拟器上的渲染问题。我使用2016年15＆＃34; Macbook Pro，7 Plus几乎不适合100％的屏幕。谢谢！

注意：这是在Xcode和Xcode beta 4的最新版本上发生的。

更新：我已经能够试用真正的iPhone 6s Plus，并且正如预期的那样工作，这绝对是模拟器图形问题。

Answer 1

我已经能够尝试使用真正的iPhone 6s Plus并且按预期工作，这绝对是模拟器图形问题。

UIVisualEffectView Mask无法在iPhone 7 Plus模拟器上运行

1 个答案: