Trying to identify selected table view cells - objective-c

Question

I'm trying to find selected people in an array. I'm correctly getting where no one is selected, however, if one person in a group is selected, all people in the group are selected.
After a long head-scratching session, I could use some help to see if there is something obvious.
This action is going on in cellForRowAtIndexPath like this:
- (UITableViewCell *)tableView:(UITableView *)aTableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSLog(#"%s", __FUNCTION__);
static NSString *pCell = #"Cell";
PeopleCell *cell = (PeopleCell *)[aTableView dequeueReusableCellWithIdentifier:pCell];
if (cell == nil) {
cell = [[PeopleCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:pCell];
}
people = [peopleArray objectAtIndex:[indexPath row]];
NSString *text = [people objectForKey:#"name"];
cell.textLabel.text = text;
if (selectedPeopleinGroup.count == 0) {
//no people selected in this group
NSLog(#"none");
cell.isSelected = [selectedPeopleinGroup containsObject:text] == NO;
} else {
//there are some people in this group - find out who they are
NSLog(#"some");
NSString *key1 = [selectedPeopleinGroup valueForKey:#"personKey"];
NSString *key2 = [people valueForKey:#"personKey"];
NSLog (#"key1 %#", key1 );
NSLog (#"key2 %#", key2 );
if (key1 == key2) {
cell.isSelected = [selectedPeople containsObject:text] == YES;
} else {
cell.isSelected = [selectedPeople containsObject:text] == NO;
}
}
return cell;
}
The cell is a subclassed UITableViewCell that has a checkmark image on the left side of the cell if selected and a different image if not selected. Many thanks.

Answer 1

This looks odd:
NSString *key1 = [selectedPeopleinGroup valueForKey:#"personKey"];
if selectedPeopleInGroup is an array, then valueForKey: returns an array of the results of calling valueForKey on each object in the array. So you are assigning an array to a string.
I'm surprised that the compiler is not issuing a warning about this. I'm also surprised that the log statements don't show odd values.