Xcode 8 - Firebase 参考错误

Question

我对使用 Firebase 还很陌生，我一直在尝试遵循在线教程。但是，我不断收到以下行的错误：

var ref = DatabaseReference.database().reference()

错误显示："Instance member database cannot be used on type 'DatabaseReference'."

我错过了什么或做错了什么？任何帮助将不胜感激！

import UIKit
import Firebase
import FirebaseDatabase     

class ViewController: UIViewController {
@IBOutlet weak var myTextField: UITextField!

var ref: DatabaseReference?    
@IBAction func saveButton(_ sender: Any) {

    var ref = DatabaseReference.database().reference()


    if myTextField.text != ""
    {
        ref?.child("list").childByAutoId().setValue(myTextField.text)

        myTextField.text = ""
    }

}

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}
}

Answer 1

根据the documentation，应该是Database.database().reference()。 DatabaseReferenece 没有成员 database().reference().

Xcode 8 - Firebase 参考错误

Xcode 8 - Firebase Error with Reference

xcode

firebase

firebase-realtime-database

xcode8