presentationTransitionWillBegin not called 发表于 2018-12-21 分类于 开发坑 阅读次数: Valine: 继承了 UIPresentationController 并且声明了一个 presenting 的属性,这个是基类的私有属性。 https://github.com/nst/iOS-Runtime-Headers/blob/fbb634c78269b0169efdead80955ba64eaaa2f21/PrivateFrameworks/UIKitCore.framework/UIPresentationController.h#L257