如何关闭多个当前视图控制器？

Question

如果我的应用程序有这样的流程..

navigation(vc1) --pushed--> vc2 --present--> navigation(vc3) --push-- > vc4 --push--> vc5

如何解散到 vc2 ？

Answer 1

你可以使用popToViewController:

基本设置：

let nav = UINavigationController()
let vc1 = UIViewController()
vc1.title = "vc1"
let vc2 = UIViewController()
vc2.title = "vc2"
let vc3 = UIViewController()
vc3.title = "vc3"
let vc4 = UIViewController()
vc4.title = "vc4"
nav.viewControllers = [vc1,vc2,vc3,vc4]

然后弹出到vc2（在数组中的索引1处）：

let vcs = nav.viewControllers
nav.popToViewController(vcs[1], animated: true)
//OR, if you still have a reference to the view controller
nav.popToViewController(vc2, animated: true)