Question

我为一个很长的问题道歉。大多数代码都是多余的。请看看!!!

首先，我认为指定的信息是在其他部分发送的，似乎是由Parse文档set_error_handler()指示的：

func myMethod() {
  var user = PFUser()
  user.username = "myUsername"
  user.password = "myPassword"
  user.email = "email@example.com"
  // other fields can be set just like with PFObject
  user["phone"] = "415-392-0202"

  user.signUpInBackgroundWithBlock {
    (succeeded: Bool, error: NSError?) -> Void in
    if let error = error {
      let errorString = error.userInfo?["error"] as? NSString
      // Show the errorString somewhere and let the user try again.
    } else {
      // Hooray! Let them use the app now.
    }
  }
}

请注意，“万岁！让他们现在使用该应用程序。”所以我认为只要控制流程没有达到else{}，指定的信息就不会被发送到云端。但是我错了。经过多次反复试验，这是我到达的结论。如果signUpInBackgroundWithBlock等于error，则nil会发送必要的信息。如果我错了，请纠正我。这就是原因。只要username成员是唯一的并且采用“something@something.com”的形式，signUpInBackgroundWithBlock就会将指定的信息发送到云端，即使，其他字段都是空的。

以下代码非常多余，我为此道歉。只需忽略所有alertController代码。

import UIKit
import Parse

class SignUpViewController: UIViewController {

    @IBOutlet weak var firstName: UITextField!
    @IBOutlet weak var lastName: UITextField!
    @IBOutlet weak var emailAddress: UITextField!
    @IBOutlet weak var password: UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()
        firstName.becomeFirstResponder()
    }

    @IBAction func signUp(sender: AnyObject) {
        let user = PFUser()
        user["firstName"] = firstName.text
        user["lastName"] = lastName.text
        user.email = emailAddress.text
        user.password = password.text
        user.username = emailAddress.text

        user.signUpInBackgroundWithBlock { (succeeded: Bool, error: NSError?) -> Void in
            if self.firstName.text == "" {
                let alertController = UIAlertController(title: "", message: "please enter your first name", preferredStyle: UIAlertControllerStyle.Alert)
                alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
                    //println("Handle Ok logic here")
                }))
                self.presentViewController(alertController, animated: true, completion: nil)
            } else if self.lastName.text == "" {
                let alertController = UIAlertController(title: "", message: "please enter your last name", preferredStyle: UIAlertControllerStyle.Alert)
                alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
                    //println("Handle Ok logic here")
                }))
                self.presentViewController(alertController, animated: true, completion: nil)
            } else if self.emailAddress.text == "" {
                let alertController = UIAlertController(title: "", message: "please enter your email", preferredStyle: UIAlertControllerStyle.Alert)
                alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
                    //println("Handle Ok logic here")
                }))
                self.presentViewController(alertController, animated: true, completion: nil)
            } else if self.password.text == "" {
                let alertController = UIAlertController(title: "", message: "please enter a password", preferredStyle: UIAlertControllerStyle.Alert)
                alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
                    //println("Handle Ok logic here")
                }))
                self.presentViewController(alertController, animated: true, completion: nil)
            } else if let error = error {
                var errorString = error.userInfo?["error"] as? NSString
                errorString = String(errorString!)

                if (errorString?.rangeOfString("missing username").toRange() != nil) {
                    errorString = "missing email address"
                }

                if (errorString?.rangeOfString("username \(self.emailAddress.text) already taken").toRange() != nil) {
                    errorString = "email \(self.emailAddress.text) already taken"
                }

                let alertController = UIAlertController(title: "", message: "\(errorString!)", preferredStyle: UIAlertControllerStyle.Alert)
                alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
                    //println("Handle Ok logic here")
                }))
                self.presentViewController(alertController, animated: true, completion: nil)
            } else {
                println("SDFJPOIWEJRPOIJWEPOITPOEWIJRPOWIEJRPIWOJEPTIHWEPROIJWPEROIJ")
            }
        }
    }
}

另外，有趣的是，如果error成员为空，Parse应该生成password，因为它是PFUser()的一部分，因为当error生成时{} username是空的。但情况似乎并非如此。

所以底线是：如果其他字段为空，我不希望signUpInBackgroundWithBlock将指定的信息发送到云端。我不知道该怎么做。有人建议解决这个问题吗？

Answer 1

您只需将验证码移到User.signUpInBackgroundWithBlock回调：

之外

@IBAction func signUp(sender: AnyObject) {
    let user = PFUser()
    user["firstName"] = firstName.text
    user["lastName"] = lastName.text
    user.email = emailAddress.text
    user.password = password.text
    user.username = emailAddress.text

    if firstName.text == "" {
        let alertController = UIAlertController(title: "", message: "please enter your first name", preferredStyle: UIAlertControllerStyle.Alert)
        alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
            //println("Handle Ok logic here")
        }))
        presentViewController(alertController, animated: true, completion: nil)
    } else if lastName.text == "" {
        let alertController = UIAlertController(title: "", message: "please enter your last name", preferredStyle: UIAlertControllerStyle.Alert)
        alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
            //println("Handle Ok logic here")
        }))
        presentViewController(alertController, animated: true, completion: nil)
    } else if emailAddress.text == "" {
        let alertController = UIAlertController(title: "", message: "please enter your email", preferredStyle: UIAlertControllerStyle.Alert)
        alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
            //println("Handle Ok logic here")
        }))
        presentViewController(alertController, animated: true, completion: nil)
    } else if password.text == "" {
        let alertController = UIAlertController(title: "", message: "please enter a password", preferredStyle: UIAlertControllerStyle.Alert)
        alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
            //println("Handle Ok logic here")
        }))
        presentViewController(alertController, animated: true, completion: nil)
    } else {
        user.signUpInBackgroundWithBlock { (succeeded: Bool, error: NSError?) -> Void in
            if let error = error {
                var errorString = error.userInfo?["error"] as? NSString
                errorString = String(errorString!)

                if (errorString?.rangeOfString("missing username").toRange() != nil) {
                    errorString = "missing email address"
                }

                if (errorString?.rangeOfString("username \(self.emailAddress.text) already taken").toRange() != nil) {
                    errorString = "email \(self.emailAddress.text) already taken"
                }

                let alertController = UIAlertController(title: "", message: "\(errorString!)", preferredStyle: UIAlertControllerStyle.Alert)
                alertController.addAction(UIAlertAction(title: "Ok", style: .Default, handler: { (action: UIAlertAction!) in
                    //println("Handle Ok logic here")
                }))
                self.presentViewController(alertController, animated: true, completion: nil)
            } else {
                println("SDFJPOIWEJRPOIJWEPOITPOEWIJRPOWIEJRPIWOJEPTIHWEPROIJWPEROIJ")
            }
        }
    }
}

PFUser（）和处理密码成员

1 个答案: