UIAlertController - 過渡到另一個賽格

我想創建一個UIAlertController有兩個選項'取消'和'註銷'。我想要'取消'按鈕來取消警報和'註銷'按鈕來執行與它相關的繼續，這是我在故事板中設置的。UIAlertController - 過渡到另一個賽格

我的代碼是;

class HomeVC: UIViewController { 

@IBAction func SignOutBtn(sender: UIButton) { 

    let alertController = UIAlertController(title: "Alert", 
     message: "Are you sure you want to log out?", 
     preferredStyle: .Alert) 

    let cancelAction = UIAlertAction(title:"Cancel", 
     style: .Cancel) { (action) -> Void in 
      print("You selected the Cancel action.") 
    } 

    let submitAction = UIAlertAction(title:"Log out", 
     style: .Default) { (action) -> Void in 
      print("You selected the submit action.") 
      self.presentedViewController 
    } 

    alertController.addAction(submitAction) 
    alertController.addAction(cancelAction) 


    self.presentViewController(alertController, animated: true, completion: nil) 
} 

}

來源

2016-02-13 SwiftBeginner

那麼，什麼是問題... –

@Rohit KP我無法Segue公司回到我的VC，如果我選擇「退出」 – SwiftBeginner

那麼它似乎你缺少你想要在塊內執行的操作。（也，你可能要解除警報控制器，該區塊內爲好。）

let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: { (action) -> Void in 
    print("You selected the Cancel action.") 
    alertController.dismissViewControllerAnimated(true, completion: nil) 
}) 
let submitAction = UIAlertAction(title: "Log out", style: .Default, handler: { (action) -> Void in 
    print("You selected the submit action.") 
    alertController.dismissViewControllerAnimated(true, completion: {() -> Void in 
     // Perform your custom segue action you need. 
    }) 
})

來源

2016-02-13 19:48:37 Lirik

感謝。我如何以編程方式執行segue動作？我用ctrl +拖動它到故事板上的VC，我怎麼稱呼它？ – SwiftBeginner

謝謝。我如何以編程方式執行segue動作？我用ctrl +拖動它到故事板上的VC，我怎麼稱呼它？ - 我試圖添加self.performSegueWithIdentifier（「segue」，發件人：無），但無論按下哪個按鈕，都讓我處於相同的VC – SwiftBeginner

請參閱下面的@ pbush25答案。 – Lirik

如果你已經從一個視圖建立一個SEGUE到另一個，在記錄您的按鈕處理了，那麼你可以請致電self.performSegueWithIdentifier("storyboadIdentifier")，這將調用prepareForSegue方法，以便您可以根據需要修改或傳遞信息。

來源

2016-02-13 21:17:11 pbush25

請參閱下面的答案以獲得更新的代碼。 Segue仍然沒有被調用。 – SwiftBeginner

@ pbush25

class HomeVC: UIViewController { 

@IBAction func SignOutBtn(sender: UIButton) { 

    let alertController = UIAlertController(title: "Alert", 
     message: "Are you sure you want to log out?", 
     preferredStyle: .Alert) 

    let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: { (action) -> Void in 
     print("You selected the Cancel action.") 
     alertController.dismissViewControllerAnimated(true, completion: nil) 

    }) 
    let submitAction = UIAlertAction(title: "Log out", style: .Default, handler: { (action) -> Void in 
     print("You selected the submit action.") 
     alertController.dismissViewControllerAnimated(true, completion: {() -> Void in 
      self.performSegueWithIdentifier("segue", sender: nil) 
     }) 
    }) 

    alertController.addAction(submitAction) 
    alertController.addAction(cancelAction) 


    self.presentViewController(alertController, animated: true, completion: nil) 


}

來源

2016-02-13 23:17:40 SwiftBeginner

UIAlertController - 過渡到另一個賽格

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