Question

我需要从孩子那里加载文字＆＃34;尼克＆＃34; 我的程序每次都在void上更改标签文本：（

这是我的代码：

  ref = Database.database().reference()
refHandle = ref.observe(DataEventType.value, with: { (snapshot) in
    let dataDict = snapshot.value as! [String: AnyObject]
    print(dataDict)
})

let userID: String = (Auth.auth().currentUser?.uid)!
ref.child("Users").child(userID).child("Nick").observeSingleEvent(of: .value, with: { 
    snapshot in 
    print(snapshot)
    let m = snapshot.value as? String
    self.label.text = m
})

And this is how my Firebase looks like

Answer 1

您必须从快照值中取值“Nick”。所以你的代码看起来像这样：

let userID: String = (Auth.auth().currentUser?.uid)!
ref.child("Users").child(userID).child("Nick").observeSingleEvent(of: .value, with: { 
    snapshot in 

    guard let value = snapshot.value as? [String: Any] else { return }
    guard let name = value["Nick"] as? String else { return }

    let m = name
    self.label.text = m
})

如何在标签中加载Firebase中的文本？

1 个答案: