Firebase retrieve multiple data using UITableViewCell (Swift 3) - ios

Question

I'm in trouble with retrieving data from Firebase.
My JSON looks like this:
-user
-contacts
-autoID Value1
-contactName : A
-autoID Value2
-contactName : B
-autoID Value3
-contactName : C
(more contactName is coming, in same structure.)
But I have no idea how to get ALL contactName's Data(A,B,C....) then print in UITableView in Swift3.0
I want to make a result like this :
#In the TableView#
A
B
C
...
But My result is different, Maybe some problem in TableViewCell.swift... but I'm not sure
ViewController.swift :
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 1
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell : MoneyTableViewCell = tableView.dequeueReusableCell(withIdentifier: "MoneyTableViewCell", for: indexPath) as! MoneyTableViewCell
cell.eachCell()
cell.layoutIfNeeded()
return cell
}
MoneyTableViewCell.swift
func eachCell() {
dbRef = Database.database().reference()
self.dbRef.child("user/contacts").observe(.value, with: {(snapshot) in
if let result = snapshot.children.allObjects as? [DataSnapshot] {
for child in result {
let receiverNameDB = child.childSnapshot(forPath: "contactName").value! as! String
self.nameArray.append(receiverNameDB)
self.nameLabel.text = receiverNameDB
print(self.nameArray)
continue
}
}
})
}
Can Anybody help me please ;)
Update - I solved this problem! Here is my edited code...
Thanks to #Abdul91
The problem was.. I had to get the data from DB first, then put them in the array. After that get each data for tableView.
My edited code will tell you more.
ViewController.swift:
var nameArray:[String] = []
override func viewDidLoad() {
super.viewDidLoad()
getNameDB{ value in
self.nameArray = value
self.tableView.reloadData()
}
tableView.register(UINib(nibName: "MoneyTableViewCell", bundle: nil), forCellReuseIdentifier: "MoneyTableViewCell")
}
//completion is for getting DB value outside of block..
func getNameDB(completion: #escaping (_ value: [String]) -> Void) {
self.dbRef.child("user/contacts").observe(.value, with: {(snapshot) in
if let result = snapshot.children.allObjects as? [DataSnapshot] {
for child in result {
let receiverNameDB = child.childSnapshot(forPath: "contactName").value! as! String
self.nameArray.append(receiverNameDB)
}
completion(self.nameArray)
}
})
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.nameArray.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell : MoneyTableViewCell = tableView.dequeueReusableCell(withIdentifier: "MoneyTableViewCell", for: indexPath) as! MoneyTableViewCell
cell.nameLabel.text = nameArray[(indexPath as NSIndexPath).row]
cell.layoutIfNeeded()
return cell
}