xcode - 在后台使用 Parse 的注册时出现 Swift 问题

Question

在后台使用 Parse 的注册 block 时，我遇到了 Swift 的问题

  func Signup()
        {
            var user = PFUser()
            user.username = self.username.text
            user.password = self.password.text
            user.email = "email@example.com"


            user.signUpInBackgroundWithBlock {
                (succeeded: Bool! , error:NSError!) -> Void in
                if (error != nil)
                {

                }
                else
                {
                    let errorString = error.userInfo["error"] as? NSString
                }
            }
        }

然后我得到了这两个错误

http://s15.postimg.org/geexdxwob/image.png

Answer 1

  func Signup()
        {
            var user = PFUser()
            user.username = self.username.text
            user.password = self.password.text
            user.email = "email@example.com"


            user.signUpInBackgroundWithBlock {
                (succeeded: Bool , error:NSError!) -> Void in
                if (error != nil)
                {

                }
                else
                {
                    let errorString = error.userInfo["error"] as? NSString
                }
            }
        }