UIImage as method return value - ios

Question

Having my first dab at Xcode (5.1.1) today.
I am trying to associate an image with a UIImageView component inside a table view cell. Direct reference to the image works, but via method call fails:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"PersonCell" ];
Person *person = (self.persons)[indexPath.row];
UILabel *labelName = (UILabel *)[cell viewWithTag:50];
labelName.text = person.name;
UIImageView *imageViewPic = (UIImageView *)[cell viewWithTag:51];
// WORKS OK
//imageViewPic.image = [UIImage imageNamed:#"ticks"];
// FAILS (no image in cell)
//[imageViewPic setImage:[self imageForScore:person.score]];
imageViewPic.image = [self imageForScore:person.score];
return cell;
}
-(UIImage *)imageForScore:(int)score
{
switch (score) {
case 1: return [UIImage imageNamed:#"tick"];
case 2: return [UIImage imageNamed:#"cross"];
}
return nil;
}
I've confirmed that a valid score of 1 or 2 is passed in, but image in cell is always blank (via method call).
What am I missing?

Answer 1

If you've confirmed that score is truly 1 or 2 when this method is called, there are two logical sources of the problem:
The call to imageNamed is failing. There are a couple of possible reasons why it could fail:
Are the tick and cross images included in your bundle (under "Copy Bundle Resoures")?
Or if using Images.xcassets, are the images there?
Either way, confirm the capitalization of the image name.
You're not providing an extension. If loading it from bundle resources (but not Images.xcassets), you have to specify the extension if the file is not a PNG file (e.g. if it is a JPEG file). Try specifying the extension if not using Images.xcassets.
If, on the other hand, you confirm that imageForScore is returning a valid UIImage, you might want to confirm that imageViewPic is correct.
It's possible that imageViewPic, itself, is nil (perhaps a subview with the tag of 51 was not found).
I might also suggest confirming the other properties of the imageViewPic (e.g. the frame is valid, that the hidden flag is not turned on, etc.).

Answer 2

Please ignore -- fault found! Mismatch on file names (ticks.png and cros.png) !