Saving values to UserDefults from Textfield in TableView : Swift - swift

Question

I am trying to save values from a tableview that users will input into the textfield, the problem is that I do not know how to access the new value and replace the string in the array.
So basically the app will display fields based on what the user wants and then the user can edit those values to their liking. Once the textfields have been updated, the values are stored again in userdefaults so that the next time the tableview is opened, the update values will appear.
This is what the tableviewcontroller looks like at the moment:
//
// Asset1TableViewController.swift
// Net Calc 2
//
// Created by Joshua Peterson on 30/06/2015.
// Copyright © 2015 Peterson Productions. All rights reserved.
//
import UIKit
class Asset1TableViewController: UITableViewController {
var dataHolder: [NSString] = [NSString]()
var finalDataHolder: [NSString] = [NSString]()
var acountAmountHolder: [NSString] = [NSString]()
var finalAccountAmountHolder: [NSString] = [NSString]()
let defaults = NSUserDefaults.standardUserDefaults()
let key1 = "keySave1"
let key2 = "keySave2"
override func viewDidLoad() {
super.viewDidLoad()
dispatch_async(dispatch_get_main_queue(), { () -> Void in
if let storedTitleValue : NSArray? = self.defaults.arrayForKey(self.key1) {
if storedTitleValue == nil {
self.dataHolder = [NSString]()
} else {
let readArray : [NSString] = storedTitleValue as! [NSString]
for element in readArray {
self.dataHolder.append(element as String)
self.finalDataHolder.append(element as String)
}
}
}
if let storedAmountValue : NSArray? = self.defaults.arrayForKey(self.key2) {
if storedAmountValue == nil {
self.acountAmountHolder = [NSString]()
} else {
let readArray : [NSString] = storedAmountValue as! [NSString]
for element in readArray {
self.acountAmountHolder.append(element as String)
self.finalAccountAmountHolder.append(element as String)
}
}
}
})
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
// MARK: - Table view data source
override func numberOfSectionsInTableView(tableView: UITableView) -> Int {
return 1
}
override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return dataHolder.count
}
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Account1Cell", forIndexPath: indexPath) as! Account1Cell
cell.AccountLabel.text = dataHolder[indexPath.row] as String
cell.AccountAmount.text = acountAmountHolder[indexPath.row] as String
return cell
}
#IBAction func addButtonTapped(sender: AnyObject) {
let newAccounTitle = "Account Name"
let newAccountAmount = "R0.00"
dataHolder.append(newAccounTitle)
acountAmountHolder.append(newAccountAmount)
tableView.reloadData()
}
#IBAction func saveButtonTapped(sender: AnyObject) {
// Save
defaults.setObject(dataHolder as Array, forKey: key1)
defaults.setObject(acountAmountHolder as Array, forKey: key2)
defaults.synchronize()
}
override func tableView(tableView: UITableView, canEditRowAtIndexPath indexPath: NSIndexPath) -> Bool {
return true
}
override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
if editingStyle == UITableViewCellEditingStyle.Delete {
dataHolder.removeAtIndex(indexPath.row)
acountAmountHolder.removeAtIndex(indexPath.row)
tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.Automatic)
}
}
/*
// Override to support rearranging the table view.
override func tableView(tableView: UITableView, moveRowAtIndexPath fromIndexPath: NSIndexPath, toIndexPath: NSIndexPath) {
}
*/
/*
// Override to support conditional rearranging of the table view.
override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {
// Return NO if you do not want the item to be re-orderable.
return true
}
*/
}
I have tried to apply some of the code that i have found on the website but the problem is that I cant actually connect to the cell.
Ok so after some research I have added a few functions to the custom cell class so that it looks like this:
import UIKit
protocol TableViewCellDelegate {
// Indicates that the edit process has begun for the given cell
func cellDidBeginEditing(editingCell: Account1Cell)
// Indicates that the edit process has committed for the given cell
func cellDidEndEditing(editingCell: Account1Cell)
}
class Account1Cell: UITableViewCell, UITextFieldDelegate {
#IBOutlet weak var AccountLabel: UITextField!
#IBOutlet weak var AccountAmount: UITextField!
var delegate: TableViewCellDelegate?
override func awakeFromNib() {
super.awakeFromNib()
// Initialization code
AccountLabel.delegate = self
}
override func setSelected(selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
// close the keyboard on Enter
AccountLabel.resignFirstResponder()
return false
}
func textFieldShouldBeginEditing(textField: UITextField) -> Bool {
// disable editing of completed to-do items
return true
}
func textFieldDidEndEditing(textField: UITextField) {
if AccountLabel != nil {
let newAccountLabel = AccountLabel.text
print(newAccountLabel) // Prints out the new edited text!!!!!!!!
}
if delegate != nil {
delegate!.cellDidEndEditing(self)
}
}
func textFieldDidBeginEditing(textField: UITextField) {
if delegate != nil {
delegate!.cellDidBeginEditing(self)
}
}
}
Now what I need to do is either replace that value in the Array at the index (which i think is going to be rather complicated) or create some sort of loop that will read ALL the values and simply store all of the new values to UserDefaults. Maybe there is something else?
Any help is appreciated!!

Answer 1

You should have a protocol in your custom cell like this, and call it when the text field in the cell gets modified:
protocol TableViewCellToTVController{
func cellCurrentlyEditing(editingCell: Account1Cell) -> Int
}
....
func textFieldShouldReturn(textField: UITextField) -> Bool {
// close the keyboard on Enter
let myrow: Int? = self.delegate_special?.cellCurrentlyEditing(self)
println("cellCurrentlyEditing got called from delegate" , myrow)
AccountLabel.resignFirstResponder()
return false
}
implement this function in tableviewcontroller to know which row got selected :
func cellCurrentlyEditing(editingCell: Account1Cell) -> Int{
var rowNum = 0
let indexP: NSIndexPath = tableView.indexPathForCell(editingCell)!
rowNum = indexP.row
return rowNum
}
also make your tableviewcontroller the delegate for each cell:
override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("Account1Cell", forIndexPath: indexPath) as! Account1Cell
cell.AccountLabel.text = dataHolder[indexPath.row] as String
cell.AccountAmount.text = acountAmountHolder[indexPath.row] as String
cell.delegate_special = self;
return cell
}