custom interactive transition animation
问题 I want to implement an interactive transition between two view controllers. I would like it to be a modal or present transition. I want the app to start out on the first view controller and allow the user to swipe down to bring in the second view controller The second view controller should come in and cover the current (first view controller) rather than move it out of the way I understand that I would need to use the following. transitioningDelegate animationController(forPresented