Putting Firebase Data Into Array to Be Put Into Text View (Swift)

Question

So I've been trying to put some Firebase data into an array in Swift, so I can then put it into a text field. Everything is working, however, my text view is empty and contains no rows and no data. Does anyone know why this is happening? My code is below (I've imported Firebase and UIKit at the top, don't know why Stack Overflow doesn't let me put that in..sorry about that):

class SummaryEmployeesFeelingViewController: UIViewController, UITableViewDataSource{

    struct Feedback {
        let id: Int
        let feeling: String
        let date: Timestamp
    }


    var feedbackarray = [Feedback]()

    @IBOutlet weak var tableView: UITableView!

    let summarydb = Firestore.firestore()

    override func viewDidLoad() {
        super.viewDidLoad()
        addDatatoArray()
        tableView.dataSource = self
        tableView.tableFooterView = UIView()

    }

    func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

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

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let feedbackcell = tableView.dequeueReusableCell(withIdentifier: "CellReuseIdentifier")!

        let text = feedbackarray[indexPath.row] as? String

        feedbackcell.textLabel?.text = text

        return feedbackcell
    }

    func addDatatoArray(){
        summarydb.collection("employeefeedback").getDocuments { (snapshot, error) in
            if error == nil && snapshot != nil{
                for document in snapshot!.documents{
                    var idValue = document.get("id")
                    var feelingValue = document.get("feeling")
                    var dateValue = document.get("date")
                    let newEntry = Feedback(id: idValue as! Int, feeling: feelingValue as! String, date: dateValue as! Timestamp)
                    self.feedbackarray.append(newEntry)

                }
        }
    }


}


}

Thank you!

Jawad Ali · Accepted Answer · 2020-05-03 22:02:20Z

1

You need to reload your tableView after getting the data

 func addDatatoArray(){
    summarydb.collection("employeefeedback").getDocuments { (snapshot, error) in
        if error == nil && snapshot != nil{
            for document in snapshot!.documents{
                var idValue = document.get("id")
                var feelingValue = document.get("feeling")
                var dateValue = document.get("date")
                let newEntry = Feedback(id: idValue as! Int, feeling: feelingValue as! String, date: dateValue as! Timestamp)
                self.feedbackarray.append(newEntry)

            }
          print("count:\(self.feedbackarray.count)")
          DispatchQueue.main.async {
            tableView.reloadData()
          }
      }
    }
}

Also set tableView delegate

override func viewDidLoad() {
        super.viewDidLoad()
        addDatatoArray()
        tableView.dataSource = self
        tableView.delegate = self
        tableView.tableFooterView = UIView()

    }

Also update your this method

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let feedbackcell = tableView.dequeueReusableCell(withIdentifier: "CellReuseIdentifier")!

        let feedBack = feedbackarray[indexPath.row] as? Feedback

        feedbackcell.textLabel?.text = feedBack.feeling

        return feedbackcell
    }

edited May 3, 2020 at 22:02

answered May 3, 2020 at 20:56

Jawad Ali

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21 Comments

Jawad Ali Over a year ago

please check print("count:(self.feedbackarray.count)") and let me know

Jawad Ali Over a year ago

i updated my answer ... where to get count of feedbackarray ... i want to see if it has data or not ?

Jawad Ali Over a year ago

you are adding newEntry in array ... newEntry have id, date, and feeling so it will print 1 ... so you should have one row of table ...

Jawad Ali Over a year ago

updated my answer ... update your cellForRowAt method ... each index of your array have Feedback struct ... not string ... cast it with Feedback struct

Jawad Ali Over a year ago

As i told you ... you have struct on each index of your feedbackarray ... so you cast it with Feedback ... now you have Feedback object ... which have id , feeling and date ...what do you want to show in cell ?

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