ios - 默认 UIViewController 呈现动画的精确缓动和计时

Question

我正在尝试制作一个自定义 CATransition，以便推送一个 viewController 看起来与模态呈现一个完全相同。

到目前为止，我有这个礼物

override func viewWillAppear(_ animated:Bool){
    super.viewWillAppear(animated)
    self.transition = CATransition()
    self.transition.duration = 0.4
    self.transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    self.transition.type = kCATransitionMoveIn
    self.transition.subtype = kCATransitionFromTop
    self.transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    self.navigationController?.view.layer.add(self.transition, forKey: nil)
}

这是为了解雇

override func viewWillDisappear(_ animated:Bool){
    super.viewWillDisappear(animated)
    self.transition.type = kCATransitionReveal
    self.transition.subtype = kCATransitionFromBottom
    self.navigationController?.view.layer.removeAllAnimations()
    self.transition.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseInEaseOut)
    self.navigationController?.view.layer.add(self.transition, forKey: nil)
}

这就是我从 navigationController 推送它的方式

self.navigationController?.pushViewController(myViewController(), animated: false)

我所拥有的与默认的 UIViewController.present(vc, animated: true, completion: nil) 动画并没有太大的不同，但它有细微的不同，尤其是缓动和关闭动画。

有谁知道我可以使用什么确切值来最接近地复制我正在寻找的动画？

Answer 1

试试这个:

self.transition.timingFunction = CAMediaTimingFunction(controlPoints: 0.2, 0.9, 0.42, 1)

https://developer.apple.com/documentation/quartzcore/camediatimingfunction/1522235-init