ios - TableView未显示来自Firebase的数据，但在“po快照”调试控制台下显示了获取数据

[The Table View is not showing any values that were defined in firebase.][1]

[Firebase已连接。当我在调试控制台中执行Print对象时，正在获取定义的数据]
https://i.stack.imgur.com/cZuKb.png
**请随意组织和整理，我对这件事很陌生。
谢谢
**
//导入

import UIKit
import Firebase
import FirebaseDatabase

class DatabaseViewController: UIViewController, UITableViewDelegate,
UITableViewDataSource {
override func viewDidLoad() {
    // Do any additional setup after loading the view.
    //Firebase Refernece
    ref = FIRDatabase.database().reference()
    databaseHandle = ref?.child("CandleInventory").observe(.childAdded,
with: { (snapshot) in
        //Execute Snapshot
        let candle = snapshot.value as! String?
        if let actualCandle = candle {
            self.candleData.append(actualCandle)

                    }
    })

    tableView.reloadData()
}

@IBOutlet weak var tableView: UITableView!

var ref: FIRDatabaseReference!
var databaseHandle:FIRDatabaseHandle?

var candleData = [String]()


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

public func tableView(_ tableView: UITableView, numberOfRowsInSection
section: Int) -> Int {
    return candleData.count
}

public func tableView(_ tableView: UITableView, cellForRowAt indexPath:
IndexPath) -> UITableViewCell {
    let cell = UITableViewCell(style: UITableViewCellStyle.default,
reuseIdentifier: "cell")
    cell.textLabel?.text = candleData[indexPath.row]

    return(cell)
}


//Datajust wont output


}

最佳答案

我非常确定您要从观察者重新加载数据，即在数据被附加之后：

databaseHandle = ref?.child("CandleInventory").observe(
   .childAdded,
   with: { [weak self] (snapshot) in
       guard let `self` = self else { return }

       let candle = snapshot.value as! String?
       guard let actualCandle = candle else { return }

       self.candleData.append(actualCandle)

       DispatchQueue.main.async {
          self.tableView.reloadData()
       }
   }
)

关于ios - TableView未显示来自Firebase的数据，但在“po快照”调试控制台下显示了获取数据，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/46860211/