是否可以禁用CATransition的背景淡入淡出？

Question

鉴于以下内容：

let transition = CATransition()
    transition.duration = 0.5
    transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionDefault)
    transition.type = kCATransitionMoveIn
    transition.subtype = kCATransitionFromTop
    navigationController.view.layer.add(transition, forKey: kCATransition)
    navigationController.pushViewController(viewController, animated: false)

viewController从底部过渡到顶部，就像模态过渡/ segue一样。但是，随着视图控制器向上移动，背景开始淡化为黑色（覆盖旧视图）。有没有办法禁止发生淡入淡出？

Answer 1

回答我自己的问题：你只需更改UIWindow的颜色