问题描述
我想知道如何创建一个与封面垂直方向完全相反的segue！Cover Vertical是从底部到顶部的，我想要从顶部到底部的过渡.我怎样才能做到这一点?预先感谢！
I was wondering how i could create a segue with the exact opposite transition of cover vertical! Cover Vertical comes from bottom to top, i want a top to bottom transition. How could i achieve this? Thanks in advance!
推荐答案
我相信您的问题可以由其他回答.stackoverflow帖子
I believe your question can be answered by another stackoverflow post
并从 Apple
关键是要实现自己的-(无效)执行方法.在 + animateWithDuration:delay:options:animations:completion:方法之前，将viewController.view.origin设置在屏幕下方，然后在动画块中调整其高度.
The key is to implement your own - (void)perform method. Before the + animateWithDuration:delay:options:animations:completion: method, set the viewController.view.origin to be below the screen and in the animations block adjust it's height.
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