快速将文本字段传递到第二个视图控制器中的标签

Question

I am making a simple client invoice list using a tableView with custom labels in each row. at the top you click the plus sign. This takes you to a second page where you type in your clients name. you hit save and it should add it to the label in the first view controller. I cannot get this to work.

my tableview storyboard has the file called ViewController.swift - in it

import UIKit

var invoiceList = [""]

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource   {

    @IBOutlet var clientTableView: UITableView!

    @IBOutlet var clientLabel: UILabel!

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


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

        let ClientName = invoiceList[indexPath.row]
        cell.textLabel?.text = [clientInput]

        return cell
    }

    func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
        if editingStyle == UITableViewCellEditingStyle.delete
        {
            invoiceList.remove(at: indexPath.row)
            clientTableView.reloadData()
        }
    }

    override func viewDidAppear(_ animated: Bool) {
        clientTableView.reloadData()
    }

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

    }

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

}

My second storyboard where you type in the text field. File is called AddInvoiceItem.swift . in it -

import UIKit

class AddInvoiceViewController: UIViewController  {

    var clientTextField:String!
    @IBOutlet var clientInput: UITextField!

    @IBAction func addItem(_ sender: Any) {

        if clientInput.text != ""
        {
        invoiceList.append(clientInput.text!)
        clientInput.text = ""

        _ = navigationController?.popViewController(animated: true)
        }
    }

    @IBAction func cancelBtn(_ sender: Any) {

        _ = navigationController?.popViewController(animated: true)

    }

}

My error keeps happening when I am trying to use the code line

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

        let ClientName = invoiceList[indexPath.row]
        cell.textLabel?.text = [clientInput]

        return cell
    }

The cell.textLabel?.text = [clientInput] I know this is wrong, but cannot figure it out!

Answer 1

Make a new cell class

class CustomCell: UITableViewCell {
     //Make your outlets here, connect the outlets from cell in your storyboard like ClientNameLabel



}

Please select the cell on your Storyboard, and enter the name of your class in this field. In your case it would be CustomCell

then in ViewController

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

        let ClientName = invoiceList[indexPath.row]
        cell.ClientNameLabel.text = ClientName

        return cell
    }