ios - 如何从 navigationController viewControllers 中删除特殊 Controller ？

Question

我想编写一个带有两个params的class方法来从导航 Controller 删除viewController，但是我不知道该怎么办。

我的代码如下，我测试过，没有成功:

class func removeVC(_ fromNav:UINavigationController, _ controller:UIViewController) {

    let controllers:NSArray = fromNav.viewControllers as NSArray
    for item in controllers {

        if (item as AnyObject).isMember(of:controller) { // There is not pass by Xcode

             // remove item out of fromNav.viewControllers
        }
    }
}

如何判断controller的class是否等于swift中的参数controller？

Answer 1

尝试这样

方法1)

class func removeVC(fromNav: UINavigationController, controller: UIViewController) {

    let controllers = fromNav.viewControllers
    for item in controllers {

        if item == controller {
            fromNav.viewControllers.remove(at: fromNav.viewControllers.index(of: item)!)
        }

    }
}

用法:UtilSwift.navRemoveVC(self.navigationController!, self)

方法2):

class func navRemoveVC(_ fromNav:UINavigationController, withControllerClass:AnyClass) {

    let controllers = fromNav.viewControllers
    for item in controllers {
        if (item as AnyObject).isKind(of: withControllerClass.self) {
            fromNav.viewControllers.remove(at: fromNav.viewControllers.index(of: item)!)
        }
    }
}

用法:UtilSwift.navRemoveVC(self.navigationController!, withControllerClass:UserRegisterViewController.self)