将所有子值检索到表视图单元格中的标签 [英] Retrieve all child value to a label in table view cell

问题描述

我想检索蛋糕"的所有子值到蛋糕率标签.
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.

I want to retrieve all the child values of "Cake" to cake Rate Label.
I am trying to retrieve but i can not arrange properly code and also i am entry level to ios.

Firebase 结构

视图控制器

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!

}

*TestTableViewController**

*TestTableViewController**

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
}
}

推荐答案

所以根据评论，正如您所说，您只需要 cakename 及其 rate 即可填写表格.否则那是静态的(如果不是，请寻找@dstepan 建议的结构和答案).. 所以这是您在 tableview 中填写数据的方法.

So based on comments, as you said that you only need cakename and its rate to fill in the table. Other then that is static (if not than please go for a structure and answer suggested by @dstepan) .. So here is how you can fill up your data in tableview.

   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()
            }
        })
    } 

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