问题描述
UINavigationController
有3个控制器,听起来与我非常相似: topViewController
, visibleViewController
和 presentsViewController
。
UINavigationController
has 3 controllers that all sound very similar to me: topViewController
, visibleViewController
, and presentedViewController
.
您在哪些场景中使用这些控制器?
Which scenarios do you use each of these controllers in?
推荐答案
presentsViewController
是屏幕上显示的当前模式。
topViewController
是导航堆栈顶部的视图控制器(参见 viewControllers()
方法)和 visibleViewController
是屏幕上当前显示的视图控制器(可以是控制器,模态, UINavigationController
, UITabbarController
等。)
presentedViewController
is the current modal presented on screen.topViewController
is view controller on top of the navigation stack (see viewControllers()
method) and visibleViewController
is the currently displayed view controller on screen (can be either a controller, a modal, a UINavigationController
, a UITabbarController
, etc).
这篇关于在UINavigationController中,topViewController,visibleViewController,presentsViewController有什么区别?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持!