add entires from textfield to UITableView to automatically populate - ios

Question

This is the code I have so far. I am able to enter into the textfield and have it appear in the UITableView, but only after I reload the page and come back to it. I want for what I enter into the textfield and when I click 'add' for it to automatically appear in the UITableView.
#IBOutlet var itemTextField: UITextField!
#IBOutlet var table: UITableView!
var items: [String] = []
#IBAction func add(_ sender: Any) {
let itemsObject = UserDefaults.standard.object(forKey: "items")
var items:[String]
if let tempItems = itemsObject as? [String] {
items = tempItems
items.append(itemTextField.text!)
print(items)
} else {
items = [itemTextField.text!]
}
UserDefaults.standard.set(items, forKey: "items" )
itemTextField.text = ""
}
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
self.view.endEditing(true)
}
func textFieldShouldReturn(_ textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return items.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "cell")
cell.textLabel?.text = items[indexPath.row]
cell.textLabel?.font = UIFont(name: "Type02", size: 20)
return cell
}
override func viewDidAppear(_ animated: Bool) {
let itemsOBject = UserDefaults.standard.object(forKey: "items")
if let tempItems = itemsOBject as? [String]{
items = tempItems
}
table.reloadData()
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == UITableViewCellEditingStyle.delete {
items.remove(at: indexPath.row)
table.reloadData()
UserDefaults.standard.set(items, forKey: "items")
}
}

Answer 1

You need to tell the table view to reloadData() whenever the items array changes. So try adding table.reloadData() to the end of your add function.

Answer 2

It works for me .
Add outlet for textfield and tableview.
#IBOutlet weak var nametextField: UITextField!
#IBOutlet weak var dataTableView: UITableView!
Add IBAction for Add action button.
#IBAction func addNameToTable(_ sender: Any) {
// Check for value in nameTextField
guard let profilename = nametextField.text else{
return
}
// Append text field value in data array
data.append(profilename)
// Reload table to show text field name in table
dataTableView.reloadData()
}
Create array to hold string values-:
var data = [String]()
Add table methods to populate data on table on clicking Add button.
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}// Default is 1 if not implemented
// return array count
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
return data.count
}
// dequeue cell
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell")
cell.textLabel?.text = data[indexPath.row]
return cell
}
// Row height
public func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat{
return 50
}
COMPLETE CODE -:
import UIKit
import AVKit
class ViewController: UIViewController {
#IBOutlet weak var nametextField: UITextField!
#IBOutlet weak var dataTableView: UITableView!
var data = [String]()
//MArk-: ViewDidLoad
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.
}
#IBAction func addNameToTable(_ sender: Any) {
guard let profilename = nametextField.text else{
return
}
data.append(profilename)
dataTableView.reloadData()
}
}
extension ViewController : UITableViewDelegate,UITableViewDataSource{
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}// Default is 1 if not implemented
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int{
return data.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell")
cell.textLabel?.text = data[indexPath.row]
return cell
}
public func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat{
return 50
}
}