Swift:如何访问AppDelegate中的navigationController

Raw*_*ean 11 navigationcontroller appdelegate swift

我在StoryBoard中添加了一个NavigationController,并将其作为初始的viewController.如何访问appDelegate中的NavigationController.从navigationController按Ctrl键拖动到AppDelegate不会创建插座.

zis*_*oft 32

didFinishLaunchingWithOptions:

let navigationController = application.windows[0].rootViewController as! UINavigationController
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  • 获取此SIGBART错误:无法将"SwiftControlsTest.ViewController"类型的值(0x1006303f0)转换为"UINavigationController"(0x101ecb670). (5认同)