window？.subviews [1]应用在iOS 13中崩溃

Question

我正在为调用功能的画中画功能工作，要求获得窗口子视图

我使用此代码来获取它transitionView = AppDelegate.shared.window?.subviews[1] ?? self.view它在少于iOS 13版本的系统上运行但是合理的代码在iOS 13中崩溃了

这是我的完整功能

func showPictureInPictureMode(){
    transitionView = AppDelegate.shared.window?.subviews[1] ?? self.view
    transitionView?.frame = CGRect(x: screenWidth - width - 13, y: 80, width: width, height: height)
    transitionView?.layer.cornerRadius = 10
    transitionView?.clipsToBounds = true
    transitionView?.addGestureRecognizer(transitionPanGesture)
    transitionView?.layer.borderColor = #colorLiteral(red: 0.07843137255, green: 0.07843137255, blue: 0.07843137255, alpha: 1)
    transitionView?.borderWidth = 1
    self.view.layer.borderColor = #colorLiteral(red: 0.07843137255, green: 0.07843137255, blue: 0.07843137255, alpha: 1)
    self.view.layer.borderWidth = 1
    self.view.layer.cornerRadius = 10
    self.view.clipsToBounds = false
    self.view.layoutIfNeeded()

    self.isPictureInPicture = true
    self.toolbar.isHidden = true
    self.pictureModeButton.isHidden = true
    self.timeLabel.isHidden = true

    self.opponentsCollectionView.reloadData()
    NotificationCenter.default.post(name: .reloadButtonState, object: nil)
}

可以帮助解决该问题。

提前感谢

Answer 1

得到解决方案只需将UIViewController演示文稿的样式.defualt更改为.overFullScreen

喜欢这个：

pipVC.ModalPresentationStyle = . overFullScreen

原因是，以默认样式显示屏幕时没有得到UILayoutContainerView。

已决定更改模式。