ios - "cannot convert value of type"- Firebase Swift 中的错误

Question

我正在尝试使用电子邮件和密码在 Firebase 中创建用户，成功创建用户记录后，我将使用附加属性作为用户 UID 的子节点来更新树。这是我的代码:

@IBAction func registerPressed(sender: AnyObject) {
        let connection = Firebase(url:"https://something.firebaseio.com")

        connection.createUser(self.emailTxtField.text, password: self.passwordTxtField.text,
            withValueCompletionBlock: { error, result in
                if error != nil {
                    // There was an error creating the account
                    print("Error Creating Account...Please try again")

                } else {
                    let uid = result["uid"] as? String
                    print("Successfully created user account with uid: \(uid)")

                    /*After creating the user, we want to update the tree with other attributes*/
                    let userAdditionalDetails = ["name": self.nameTxtField.text, "mobile": self.mobileTxtField.text, "username": self.usernameTxtField.text]
                    let usersRef = connection.childByAppendingPath("users")

                    let users = ["\(uid)": userAdditionalDetails]
                    usersRef.setValue(users)
                }
        })
    }

虽然我不确定上述内容是否有效(因为这是我第一次使用 Firebase SDK)，但我收到以下错误:

cannot convert value of type “[String: [String : String?]]” to expected argument type "AnyObject!"

由于以下行触发了上述错误，我当然无法构建项目:

                usersRef.setValue(users)

知道为什么会发生这种情况以及如何解决吗？

提前致谢。

Answer 1

找到了解决方案，并将其放在这里以供其他人将来引用:

@IBAction func registerPressed(sender: AnyObject) {
    let connection = Firebase(url:"https://something.firebaseio.com")

    connection.createUser(self.emailTxtField.text, password: self.passwordTxtField.text,
        withValueCompletionBlock: { error, result in
            if error != nil {
                // There was an error creating the account
                print("Error Creating Account...Please try again")

            } else {
                let uid = result["uid"] as? String
                print("Successfully created user account with uid: \(uid)")

                /*After creating the user, we want to update the tree with other attributes*/
                let userAdditionalDetails = ["name": "\(self.nameTxtField.text!)", "mobile": "\(self.mobileTxtField.text!)", "username": "\(self.usernameTxtField.text!)"]
                let usersRef = connection.childByAppendingPath("users")

                let users = ["\(uid)": userAdditionalDetails]
                usersRef.setValue(users)
            }
    })


}

问题是，在初始化 userAdditionalDetails 时，应包含字符串格式的导出变量。例如。

"username": "\(username.text!)"

这有效，所有对象都在后端正确反射(reflect)。