UITableViewCell strange behavior when on select changing an image inside - objective-c

Question

I have a problem while using a custom extended UITableViewCell with a nib file for a UITableView in my iPad application.
This cell have a behavior when selecting it to change a checkmark image from selected to unselected depended if it was selected, I use custom images for this and not the default check cell Apple have.
So everything in my functionality seems to be correct. I post some code.
I use the registerNib method to load the nib cell.
[tableView registerNib: [UINib nibWithNibName: #"ANibTableViewCell" bundle: nil] forCellReuseIdentifier: Identifier];
The nib cell is extended with a class file and managed through it, connecting outlets append model values etc.
In cellForRowAtIndexPath:
- (UITableViewCell*) tableView: (UITableView*) tableView cellForRowAtIndexpath: (NSIndexPath*) indexPath
{
ExtendedtableViewCell* cell;
AModel* model;
cell = [tableView dequeueReusableCellWithIdentifier: Identifier];
model = [modelForDisplay objectAtIndex: indexPath.row];
cell.model = model;
// Some operations setting the check mark if it needed etc.
// Checkmark is a UIImageView in the nib cell that just changes image on selection
// Some other operations happening notified by the model if selected or unselected
return(cell);
}
My problem is so strange now, lets say that you visually have 6 cells and you select the first 3, all fine, but if you scroll down to see the next cells, lets say you scroll 6 rows down you notice that always per 6 cells the 3 first looks selected, but the extended cell class instance which I keep if its selected or not is not in selected state. What visual effect is that?

Answer 1

Try this,
- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath {
NSString *Identifier = [NSString stringWithFormat:#"cell%d.%d",indexPath.section,indexPath.row];
ExtendedtableViewCell* cell;
AModel* model;
cell = [tableView dequeueReusableCellWithIdentifier: Identifier];
model = [modelForDisplay objectAtIndex: indexPath.row];
cell.model = model;
// Some operations setting the check mark if it needed etc.
// Checkmark is a UIImageView in the nib cell that just changes image on selection
// Some other operations happening notified by the model if selected or unselected
return(cell);
}
hope it will helps you.....