Attending to each row of NSTableview to change image on Click-

Question

I'm trying to add this example's ImageAndTextCell.h class to my project. I have added it successfully. It looks something like below

On row click i get the selected index and on IBAction I need to change it to green color. Which works fine too. But when I click on another row, the previous rows green turns to red. Im sure the problem is with the logic of checking for the row. I have implemented the below code which failed

 - (NSCell *)tableView:(NSTableView *)tv dataCellForTableColumn:(NSTableColumn *)tableColumn row:(NSInteger)row {



NSTextFieldCell  *cell = [tableColumn dataCell];
if(tv== [self tableView]){
    if([[tableColumn identifier] isEqualToString:COLUMN_TITLE]){
        if(![tickTracker count]){
            ImageAndTextCell *imageAndTextCell = (ImageAndTextCell *)cell;
            // Set the image here since the value returned from outlineView:objectValueForTableColumn:... didn't specify the image part...
            NSString *fileName = [[NSBundle mainBundle] pathForResource:@"Cross" ofType:@"png"];
            NSImage *markerImage = [[NSImage alloc] initWithContentsOfFile:fileName];
            [imageAndTextCell setImage:markerImage];

        }else{
             for (int i= 0;i < [tickTracker count];i++){ 
              NSLog(@" 123 number %@",[tickTracker objectAtIndex:i]);
              NSInteger myInteger = [[tickTracker objectAtIndex:i] integerValue];
              [changedRows addObject:[tickTracker objectAtIndex:i]];


            if(row == myInteger){
                NSLog(@" %li value ",row);
                ImageAndTextCell *imageAndTextCell = (ImageAndTextCell *)cell;
                // Set the image here since the value returned from outlineView:objectValueForTableColumn:... didn't specify the image part...
                NSString *fileName = [[NSBundle mainBundle] pathForResource:@"Tick" ofType:@"png"];
                NSImage *markerImage = [[NSImage alloc] initWithContentsOfFile:fileName];
                [imageAndTextCell setImage:markerImage];

            }else{
                 ImageAndTextCell *imageAndTextCell = (ImageAndTextCell *)cell;
                 // Set the image here since the value returned from outlineView:objectValueForTableColumn:... didn't specify the image part...
                NSString *fileName = [[NSBundle mainBundle] pathForResource:@"Cross" ofType:@"png"];
                NSImage *markerImage = [[NSImage alloc] initWithContentsOfFile:fileName];
                [imageAndTextCell setImage:markerImage];
                }
            }
         }
   return cell;
  }

Can someone help me on this? The object at index 0 in tickTracker is not set to green when it checks for object at index 1.

EDIT 1 . Inside the ticktracker:

-(IBAction)method:(id)sender{

 NSUInteger idx = [[tableView selectedRowIndexes] firstIndex];

 while (idx != NSNotFound) {
    int rowKey = (int)idx;
    NSNumber* rowNumber = [NSNumber numberWithInt:rowKey];
    [tickTracker addObject:rowNumber];

    idx =[[tableView selectedRowIndexes] indexGreaterThanIndex:idx];



}

}

Ouput:

  NSLog(@" 123 number %@",[tickTracker objectAtIndex:i]);
  Output: 123 number 2
  NSLog(@" %li value ",row);
  2 value 

Answer 1

1) Declare a property selectedCars of type NSMutableDictionary. Init it. This replaces your "tickTracker".

2) You don't need an IBAction. Just override tableViewSelectionDidChange :

- (void)tableViewSelectionDidChange:(NSNotification *)aNotification {
    [selectedCars addObject:@"yes" forKey:[[self tableView] selectedRow];
}

3) In dataCellForTableColumn replace

}else{
             for (int i= 0;i < [tickTracker count];i++){ 
              NSLog(@" 123 number %@",[tickTracker objectAtIndex:i]);
              NSInteger myInteger = [[tickTracker objectAtIndex:i] integerValue];
              [changedRows addObject:[tickTracker objectAtIndex:i]];


            if(row == myInteger){

with

}else{
   if ([self.selectedCars objectForKey:row]) {
      ... set the tick image ...
   } else {
      ... set the cross image ...
}

4) If you want to deselect rows, then check in the ...DidChange delegate method, if selectedCars is already set and delete the entry if true.

Answer 2

   if([tickTracker containsObject:row]) { 


    }

This the settled issue. Aslong as the object row value is inside the tickTracker change the image.