从视图控制器到视图控制器的泛函传递

Question

如何在func as? ViewController中进行输入数据？

private func toVC<T>(_ id: String, vc: T.Type) {
    if let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: id) as? T {
        if let window = self.window, let rootVC = window.rootViewController {
            var currVC = rootVC
            let navVC = UINavigationController()
            while let presentVC = currVC.presentedViewController {
                currVC = presentVC
            }
            navVC.viewControllers = [vc]
            currVC.present(navVC, animated: true, completion: nil)
        }
    }
}

我在Cannot convert value of type 'T' to expected element type 'UIViewController'中收到错误navVC.viewControllers = [vc]。

如何正确创建函数？

UPD

Answer 1

如下更改更改方法签名，指定类型为T的UIViewController，

private func toVC<T: UIViewController>(_ id: String, vc: T.Type) {

为特定控制器传递data，>
private func toVC<T>(_ id: String, vc: T.Type, data: Any) {
    if let vc = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: id) as? T {
        if let window = self.window, let rootVC = window.rootViewController {
            var currVC = rootVC
            let navVC = UINavigationController()
            while let presentVC = currVC.presentedViewController {
                currVC = presentVC
            }
            (vc as? MyViewController1)?.data = data
            (vc as? MyViewController2)?.data = data
            navVC.viewControllers = [vc]
            currVC.present(navVC, animated: true, completion: nil)
        }
    }
}