Cosmicmind/Material: difference between NavigationController and ToolbarController
问题 I'm working on a app that is written with swift3 in Xcode8. My app implements the Cosmicmind-material-framework. While the working i tried to understand what the difference between NavigationController and ToolbarController is. (maybe someone can additionaly explain the difference to PageTabBarController, too) I don't really get it because it seems that the navigationController contains a toolbarController. So why should i use both if i can only use the navigationController and prepare all