swift - 在 swift 中使用 parse 重置密码

Question

好吧，那么我如何才能访问添加它的 block 末尾的“textField”呢？我尝试创建一个名为“alertTextField”的全局属性，然后将其设置为 block 中的 textField，以便我可以在其他操作中访问它，但它似乎不起作用。有什么建议么？

谢谢!

  @IBAction func resendPassword(sender: AnyObject) {

    let alertController : UIAlertController = UIAlertController(title: "Forgot Password?", message: "Enter your email", preferredStyle: UIAlertControllerStyle.Alert)

    let cancelAction: UIAlertAction = UIAlertAction(title: "Cancel", style: .Cancel) { action -> Void in

    }

    alertController.addAction(cancelAction)

    alertController.addTextFieldWithConfigurationHandler { (textField) -> Void in

        textField == self.alertTextField

        textField.delegate = self
        textField.placeholder = "Email"
    }

    let sendAction: UIAlertAction = UIAlertAction(title: "Send", style: UIAlertActionStyle.Default) { action -> Void in

        if (self.alertTextField?.text != nil) {

        PFUser.requestPasswordResetForEmailInBackground(self.alertTextField!.text)

        }

    }

    alertController.addAction(sendAction)

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

}

Answer 1

查看此处的示例代码以了解详细信息:http://nshipster.com/uialertcontroller/

@IBAction func resendPassword(sender: AnyObject) {

    let alertController : UIAlertController = UIAlertController(title: "Forgot Password?", message: "Enter your email", preferredStyle: UIAlertControllerStyle.Alert)

    alertController.addTextFieldWithConfigurationHandler { (textField) -> Void in
        textField.placeholder = "Email"
    }

    let cancelAction = UIAlertAction(title: "Cancel", style: .Cancel, handler: nil)

    alertController.addAction(cancelAction)

    let sendAction = UIAlertAction(title: "Send", style: UIAlertActionStyle.Default) { _ in
        // below is how you access the textField
        let emailTextField = alertController.textFields![0] as UITextField
        if let email = emailTextField.text {
            PFUser.requestPasswordResetForEmailInBackground(email)
        }
    }

    alertController.addAction(sendAction)

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

}