类似半模态视图且带叠加动画效果

类似半模态视图且带叠加动画效果，源码UIViewController+KNSemiModal Category，KNSemiModalViewController模仿了半模态视图，并带有一些叠加动画，可以在Park Guides by National Geographic app中看到这种效果，简单拖至项目中即可运行。 UIViewController+KNSemiModal is an effort to make a replica of semi-modal view with pushed-back stacked animation found in the beautiful Park Guides by National Geographic app. You can see this original semi-modal view below. This library (ARC) is designed as a Category to UIViewController so you do not have to subclass and you can simply drop in any project and it will just work!