CollectionView data not showing

Question

I am sending the data to collection view but I am getting the error [__NSCFConstantString objectAtIndex:]: unrecognized selector sent to instance. Please help me. Thank you.

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{

    //    NSURL *imageURL = [NSURL URLWithString:str1];
    //    NSData *imageData = [NSData dataWithContentsOfURL:imageURL];
    //    UIImage *image = [UIImage imageWithData:imageData];
    //    thumbnailImgView.image = image;


    static NSString *identifier = @"Cell";

    CustomCell *cell = (CustomCell *)[collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath];

    UIImageView *recipeImageView = (UIImageView *)[cell viewWithTag:100];
    recipeImageView.image = [UIImage imageNamed:[recipeImages[indexPath.section] objectAtIndex:indexPath.row]];
    cell.backgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"img.png"]];
    cell.selectedBackgroundView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"One-Album.png"]];

    return cell;

}

Answer 1

This line seems to be wrong [recipeImages[indexPath.section] objectAtIndex:indexPath.row]

If recipeImages is a type of NSArray or NSMutableArray, you should use [recipeImages objectAtIndex:indexPath.row] .

Example:

if([recipeImages count] > indexPath.row)
{
   recipeImageView.image = [UIImage imageNamed:[recipeImages objectAtIndex:indexPath.row]];
}
else
{
  NSLog(@"Unable to get the image name");
}