Passing data from collection view to detail view - ios

Question

I need some help figuring out how to pass data from my collection view to the detail view controller. I am starting by simply passing the image through. My code is below:
ViewController:
-(MyCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
MyCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:#"CELL" forIndexPath:indexPath];
PFObject *imageObject = [imageFilesArray objectAtIndex:indexPath.row];
__block UIImage *MyPicture = [[UIImage alloc]init];
PFFile *imageFile = [imageObject objectForKey:#"test"];
[imageFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {
if (!error) {
MyPicture = [UIImage imageWithData:data];
cell.CollectionImg.image = [UIImage imageWithData:data];
cell.cellLabel.text = [object objectForKey:#"phone"];
}
}];
return cell;
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{
TopDetailViewController *detailVC = [[TopDetailViewController alloc] initWithNibName:#"TopDetailViewController" bundle:[NSBundle mainBundle]];
detailVC.img= [imageFilesArray objectAtIndex: indexPath.row];
[self.navigationController pushViewController:detailVC animated:YES];
}
And the Detail view:
.h
#property (nonatomic, strong) IBOutlet UIImageView *imageView;
#property (nonatomic, strong) IBOutlet NSString *img;
.m
- (void)viewDidLoad
{
[super viewDidLoad];
self.imageView.image = [UIImage imageNamed:self.img];
// Do any additional setup after loading the view from its nib.
}
If someone could help me out I would greatly appreciate.

Answer 1

You can only use [UIImage imageNamed:] to retrieve images that are in your app bundle. It looks like you create these images at run-time based on the PDF file, so just passing in the string to the detail view and loading it with [UIImage imageNamed:] won't work. You should pass the reference to the image or the PFFile object so that the detail view can generate the image itself.