update array when the user updates the text field in the cell - ios

Question

I was wondering if there's a way to update barcodeItemsQuantity array when the user updates the text field in a custom uitableviewcell. Below are my code snippets. and I want to update data from my array whenever the user changes the textfield from the custom tableviewcell.
viewcontroller.m
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSLog(#"Cell Initialized");
static NSString *cellIdentifier = #"BarcodeItemsCell";
BarcodeItemsTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];
cell.selectionStyle = UITableViewCellSelectionStyleNone;
if (cell == nil) {
cell = [[BarcodeItemsTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];
cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
}
// Configure the cell...
if (indexPath.row == [barcodeItems count]) {
// Add new row
cell.barcodeLabel.text = #"scan SKU";
cell.barcodeLabel.textColor = [UIColor lightGrayColor];
UIImage *btnImage = [UIImage imageNamed:#"barcodeIcon"];
[cell.leftButton setImage:btnImage forState:UIControlStateNormal];
cell.leftButton.tintColor = [UIColor blackColor];
cell.quantityTextField.userInteractionEnabled = NO;
[cell.leftButton addTarget:self action:#selector(scanBarcode) forControlEvents:UIControlEventTouchUpInside];
NSLog(#"Add another Item Requested");
}
else {
// Display barcode items
cell.barcodeLabel.text = [barcodeItems objectAtIndex:indexPath.row];
UIImage *btnImage = [UIImage imageNamed:#"deleteIcon"];
cell.leftButton.tintColor = [UIColor redColor];
[cell.leftButton setImage:btnImage forState:UIControlStateNormal];
cell.leftButton.tag = indexPath.row;
[cell.leftButton addTarget:self action:#selector(deleteRow:) forControlEvents:UIControlEventTouchUpInside];
[barcodeItemsQuantity addObject:cell.quantityTextField];
}
NSLog(#"Cell Populated");
return cell;
}
- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
return true;
}
-(void) deleteRow:(id)sender {
CGPoint buttonPosition = [sender convertPoint:CGPointZero toView:photoCaptureView.itemsTableView];
NSIndexPath *indexPath = [photoCaptureView.itemsTableView indexPathForRowAtPoint:buttonPosition];
[barcodeItems removeObjectAtIndex:indexPath.row];
[photoCaptureView.itemsTableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
NSLog(#"Item Removed");
}
barcodeitestableviewcell.h
#interface BarcodeItemsTableViewCell : UITableViewCell
#property (strong, nonatomic) IBOutlet UIButton *leftButton;
#property (strong, nonatomic) IBOutlet UILabel *barcodeLabel;
#property (strong, nonatomic) IBOutlet UITextField *quantityTextField;
#end

Answer 1

Yes, you can update your data model value for the textfield text placed inside custom table cell.
STEP 1:
Add delegate in your current class "UITextFieldDelegate"
class ViewController: UIViewController,UITextFieldDelegate
STEP 2:
on your "cellForRowAt indexPath" invoke the delegate to current textfield and also add the tag
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath)
// add the following lines
cell.textField.delegate = self
cell.textField.tag = indexPath.row
return cell
}
STEP 3:
call the UITextField Delegates
func textFieldDidEndEditing(textField: UITextField) {
if !textField.text.isEmpty { // check textfield contains value or not
if textField.tag == 0 {
firstName = textField.text!
} else {
lastName = textField.text!
}
}
func textFieldShouldReturn(textField: UITextField) -> Bool {
textField.resignFirstResponder()
return true
}
func textFieldDidBeginEditing(textField: UITextField!) {
if textField.tag == 0 {
firstName = ""
} else {
lastName = ""
}
}
Here, you can replace the firstName and lastName with your desired model variables.
Hope this will work for you.