ios - 将所有子值检索到 TableView 单元格中的标签

Question

我想将“蛋糕”的所有子值检索到蛋糕费率标签。
我正在尝试检索，但我无法正确安排代码，而且我是 ios 的入门级。

Firebase 结构

View Controller

TestTableViewCell

import UIKit
class TestTableViewCell: UITableViewCell {

@IBOutlet weak var cakeImage: UIImageView!
@IBOutlet weak var cakeEngLabs: UILabel!
@IBOutlet weak var cakeUrLabs: UILabel!
@IBOutlet weak var cakeRateLabs: UILabel!

}

*测试 TableView Controller **

import UIKit
import Firebase

class TestTableViewController: UITableViewController {

@IBOutlet var cakeTableView: UITableView!

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


struct Cake {
  let cakeEngNames: String
  let cakeUrNames: String
  let cakeImages: UIImage
  var cakeRates: String
}


var cakes = [Cake(cakeEngNames: "almond Cake", cakeUrNames: "badam cake",     cakeImages: UIImage(named:"Maru")!, cakeRates: ""),

         Cake(cakeEngNames: "Jelly Cake", cakeUrNames: "jeli ka cake", cakeImages: UIImage(named:"spices")!, cakeRates: ""),

         Cake(cakeEngNames: "Jelly Cake", cakeUrNames: "jeli ka cake", cakeImages: UIImage(named:"spices")!, cakeRates: ""),

         Cake(cakeEngNames: "Jelly Cake", cakeUrNames: "jeli ka cake", cakeImages: UIImage(named:"spices")!, cakeRates: "")]




override func viewDidLoad() {
super.viewDidLoad()

let AlmondSnap = ref.child("Hyderabad").child("Bakery").child("Cake")
AlmondSnap.observe( .value, with: { (snapshot) in
    let almondRate = snapshot.value as! String
        self.cakes[].cakeRates = almondRate

        print("\(almondRate)")
        self.tableView.reloadData()
})
}

 override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.cakes.count
}

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: "TestTableViewCell", for: indexPath) as! TestTableViewCell

cell.cakeImage.image = self.cakes[indexPath.row].cakeImages
cell.cakeEngLabs.text = self.cakes[indexPath.row].cakeEngNames
cell.cakeUrLabs.text = self.cakes[indexPath.row].cakeUrNames
cell.cakeRateLabs.text = self.cakes[indexPath.row].cakeRates
return cell
}
}

Answer 1

所以根据评论，正如你所说，你只需要 cakename 和它的比率来填写表格。除此之外，它是静态的(如果不是，请使用 @dstepan 建议的结构和答案).. 所以这里是如何在 tableview 中填充数据。

   var cakes = [Cake]()

    override func viewDidLoad() {
        super.viewDidLoad()

        let almondSnap = ref.child("Hyderabad").child("Bakery").child("Cake")
        almondSnap.observe( .value, with: { (snapshot) in
            if snapshot.hasChildren(){
                for snap in snapshot.children {
                   // snap.key produces name of cake
                   // snap.value produces rate of cake

                    if let node = snap as? FIRDataSnapshot, let rate = node.value as? Int {
                        self.cakes.append(Cake(cakeEngNames: node.key,
                                          cakeUrNames: "badam cake",
                                          cakeImages: UIImage(named:"Maru")!,
                                          cakeRates: String(rate)))
                    }
                }
                self.cakeTableView.reloadData()
            }
        })
    }