尝试使用 Firebase 保存和获取数据但收到此错误

Question

我想在 firebase 上保存数据，然后从该数据库中获取数据，但看到这个 Error.I 已经尝试了很多链接但没有找到任何帮助？提前致谢...

import UIKit
import GoogleMaps
import FirebaseCore
import Firebase
import FirebaseDatabase

class ViewController: UIViewController {

 var databaseRefer: DatabaseReference!
 var databaseHandle: DatabaseHandle!

 override func viewDidLoad() {
    super.viewDidLoad()

    databaseRefer = Database.database().reference()
    databaseRefer.child("name").childByAutoId().setValue("England")
   databaseRefer.child("name").childByAutoId().setValue("Pakistan")

    DatabaseHandle = 
     databaseRefer.child("name").observe(.childAdded, with: { 
         (data) in
        let name = (data.value as? String)
        debugPrint(name)
    })
}



Geting this Error at this line...

DatabaseHandle = databaseRefer.child("name").observe(.childAdded, 
    with: { (data) in
        let name = (data.value as? String)
        debugPrint(name)
    })

无法分配给 'DatabaseHandle.Type' 类型的不可变表达式（又名 'UInt.Type'）

Answer 1

尝试通过以下方式获取数据：

let ref = Database.database().reference(withPath: "YOUR_CHILD_NAME")
ref.observeSingleEvent(of: .value) { (snapshot) in
    if !snapshot.exists() { return }
    print("DATA RECEIVED FROM FIREBASE!!!")
    print(snapshot.value)
}

尝试使用 Firebase 保存和获取数据但收到此错误

Trying to Save and Fetch data using Firebase but receiving this Error

xcode

swift

swift4.2