ios - 一般删除导航堆栈中的自定义 UIViewController 类

Question

我想以编程方式删除 UINavigationController 堆栈中特定类型的一些 Controller 。

工作非泛型函数:

    if let navigationController = navigationController {
        var controllers = [AnyObject]()
        for item in navigationController.viewControllers {
            if !(item is CustomViewController) {
                controllers.append(item)
            }
        }

        navigationController.viewControllers = controllers
    }

但是，我正在努力使这个变得通用。

func removeController<T>(controller: T.Type, navigationController: UINavigationController?) {
    if let navigationController = navigationController {
        var controllerArray = [AnyObject]()
        for item in navigationController.viewControllers {
            if !(item is T.Type) {
                controllerArray.append(item)
            }
        }
        navigationController.viewControllers = controllerArray
    }

}
removeController(CustomViewController.self, navigationController)

多次尝试，还是不行。
谁能帮帮我，谢谢。

Answer 1

试试下面的代码:

func removeController<T>(type: T.Type, navigationController: UINavigationController?) {

    if let navigationController = navigationController {
        var controllerArray = [UIViewController]()

        for item in navigationController.viewControllers as [UIViewController] {
            if !(item is T) {
                controllerArray.append(item)
            }
        }
        navigationController.viewControllers = controllerArray
    }
}

removeController(CustomViewController.self, navController)