UITextField clears while scrolling in UITableView - custom cell - iphone

Question

I am trying to save certain values from UITextField however, I am unable to do that because whenever I scroll there is nothing in UITextField. I am using a custom cell. I understand that custom cell has to load in a specific view and for that reason I'm using textFieldDidEndEditing to store values in an array. However, I get the following error message:
* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[__NSArrayM insertObject:atIndex:]: object cannot be nil'
Help is much appreciated!! My code is below and I'm quite new in IOS Development.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
if (indexPath.section == 0) {
if (indexPath.row == 7) {
static NSString *CellIdentifier = #"RevButtonCell";
RevButtonCell *cell = (RevButtonCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"RevButtonCell" owner:self options:nil];
cell = [topLevelObjects objectAtIndex:0];
[cell.revsaveB addTarget:self action:#selector(revaddparse:) forControlEvents:UIControlEventTouchUpInside];
cell.reveditdeleteB.hidden = YES;
cell.reveditsaveB.hidden = YES;
cell.revsaveB.hidden = NO;
cell.revdeleteB.hidden = NO;
}
return cell;
} else {
static NSString *CellIdentifier = #"TextCell";
TextCell *cell = (TextCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:#"TextCell" owner:self options:nil];
cell = [topLevelObjects objectAtIndex:0];
}
cell.detaillabel.text = [revdetailsA objectAtIndex:indexPath.row];
cell.detailtext.placeholder = #"Enter Text";
cell.detailtext.tag = indexPath.row;
cell.detailtext.delegate = self;
if (indexPath.row == 0) {
cell.detailtext.text = dateS;
}
if (indexPath.row == 1) {
cell.detailtext.text = clientS;
}
if (indexPath.row == 2) {
cell.detailtext.text = productS;
}
if (indexPath.row == 3) {
cell.detailtext.text = amountS;
}
if (indexPath.row == 4) {
cell.detailtext.text = qtyS;
}
if (indexPath.row == 5) {
cell.detailtext.text = taxS;
}
if (indexPath.row == 6) {
cell.detailtext.text = totalS;
}
cell.selectionStyle = UITableViewCellSelectionStyleNone;
return cell;
}
}
}
- (void)textFieldDidEndEditing:(UITextField *)textField
{
[client insertObject:clientS atIndex:0];
[product insertObject:productS atIndex:0];
[date insertObject:dateS atIndex:0];
[amount insertObject:amountS atIndex:0];
[qty insertObject:qtyS atIndex:0];
[tax insertObject:taxS atIndex:0];
[total insertObject:totalS atIndex:0];
}

Answer 1

Initialize the vales of to empty string as
clientS = #"";
productS = #"";
dateS = #"";
amountS = #"";
qtyS = #"";
taxS = #"";
totalS = #"";

Answer 2

just use every CellIdentifier are different use CellIdentifier like bellow
and also here after use this code ,not required to create array and insert object in it so dont create array just use this code..
NSString *CellIdentifier = [NSString stringWithFormat:#"Cell%d%d",indexPath.section,indexPath.row];
use this CellIndentifier insted of another like "TextCell" and "ButtonCell"
i hope this help you...
:)

Answer 3

It looks from your code like you are trying to implement static cells in a table view. What you might want to consider is using a storyboard and creating a table view that supports static table cells just using Interface Builder. This will allow you to eliminate the entire cellForRowAtIndexPath: method. If you can't use storyboards, then you will have to manage your cells the way you're doing it, but in my book, anytime you can eliminate code, you should.
If you're going to use a storyboard, there a couple things you should know:
Your view controller in the storyboard needs to be a table view controller
You set the table Content field to "Static Cells"
Add the textfields you want to use to each of the cells by dragging them into the cells you add
Create outlets in your view controller header and then drag connections to them in interface builder
There are some tutorials out there on using table views with static cells. They can be a little long, however, stick with them and you should be able to produce the results you're looking for.
Best regards.