使用UIAlertController动作编程链接到嵌入式UIViewController

Question

用户目前使用的是一个ViewController，它是Modally。

我正在尝试连接UIAlertViewController的OK按钮操作，以编程方式链接到嵌入在UINavigationController中的UIViewController。

就像这样：

​

这是我的相关代码片段：

func paymentQueue(queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {

....// some code

case .Restored:

....// some code
let alert = UIAlertController(title: "Thank You!", message: "You now have FULL ad-free Access", preferredStyle: UIAlertControllerStyle.Alert)
let OKAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.Default) { (action:UIAlertAction) in
// Goto Main Page:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("MainMainViewController");
self.navigationController?.presentViewController(vc, animated: true, completion: nil)
}
alert.addAction(OKAction)
self.presentViewController(alert, animated: true, completion: nil)

break;

default:
break;
}

本质上，当用户恢复购买(或成功购买)时，我希望他们单击OK将其发送到另一个ViewController - MainMainViewcontroller。

但是当我点击OK按钮时，什么都不会发生。

我哪里出问题了？

(预先多谢诸位先生/梅斯达梅斯;)

Answer 1

往这边写。

func paymentQueue(queue: SKPaymentQueue, updatedTransactions transactions: [SKPaymentTransaction]) {

....// some code

case .Restored:

....// some code
let alert = UIAlertController(title: "Thank You!", message: "You now have FULL ad-free Access", preferredStyle: UIAlertControllerStyle.Alert)
let OKAction = UIAlertAction(title: "OK", style: UIAlertActionStyle.Default) { (action:UIAlertAction) in
// Goto Main Page:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let navVC = storyboard.instantiateViewControllerWithIdentifier("Navigation");
self.presentViewController(navVC, animated: true, completion: nil)
}
alert.addAction(OKAction)
self.presentViewController(alert, animated: true, completion: nil)

break;

default:
break;
}