Iteration in UITableView for a particular cell - ios

Question

I have data and image in cells of UITableView. I want to change image of a particular cell,
I have a code with each cell.
I am not able to find the way to iterate the tableview for cell.
here is snap shot of my tableview function.
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *cellText = nil;
NSArray *keys = [[[self packageItems] allKeys]
sortedArrayUsingSelector:#selector(localizedCaseInsensitiveCompare:)];
cellText = [keys objectAtIndex:[indexPath row]];
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier];
[cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
}
cell.imageView.image=[UIImage imageNamed:#"checkbox.png"];
//cell.imageView.image=[UIImage imageNamed:#"checkbox-checked.png"];
return cell;
}
There is another function where i want to change cell image to cell.imageView.image=[UIImage imageNamed:#"checkbox-checked.png"];
- (void)OnAction
{
static NSString *CellIdentifier = #"Cell";
NSIndexPath *indexPath = [[NSIndexPath alloc] initWithIndex:0];
UITableViewCell *cell = [self.tableView cellForRowAtIndexPath:indexPath ];
cell.imageView.image=[UIImage imageNamed:#"checkbox-checked.png"];
}

Answer 1

If you wont to change something in table view with you function you dont have to make new cell, just modify actual cell. Just make condition in your cellForRowAtIndexPath delegate:
if(indexPath == indexToModify) {
cell.imageView.image=[UIImage imageNamed:#"checkbox-checked.png"];
} else {
cell.imageView.image=[UIImage imageNamed:#"checkbox.png"];
}
and in your - (void)OnAction method use in the end:
[self.tableView reloadData];