Can't get UICollectionView to display cells

Question

I\'m trying to get a UICollectionView to display inside a modally presented view controller. The app is for iPad iOS 7.

I\'ve created subclass of UIViewController (w

Answer 1

One other point of interest is that if you set the cell's identifier in the nib or storyboard, don't register the nib/class in the collection view controller. Do one or the other, but not both.

Answer 2

If you link your collectionView and its own dataSource and delegate in your xib file, you don't need to set up this on your code.

Next, you need to register your UICollectionViewCell :

- (void)viewDidLoad 
{
    [super viewDidLoad];

    // Register Nib
    [self.collectionView registerNib:[UINib nibWithNibName:CollectionViewCell_XIB bundle:[NSBundle mainBundle]] forCellWithReuseIdentifier:CollectionViewCell_ID];
}

CollectionViewCell_XIB is the name of your cell xib CollectionViewCell_ID is the ID of your cell

And you need to implement cellForItemAtIndexPath like this :

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    CollectionViewCell *cell = (CollectionViewCell *)[self.collectionView dequeueReusableCellWithReuseIdentifier:CollectionViewCell_ID forIndexPath:indexPath];

    // Configure cell with data
     UIImageView *myImageView = (UIImageView *)[cell viewWithTag:100];
    myImageView.image = [UIImage imageNamed:[itemsArray objectAtIndex:indexPath.row]];

    // Return the cell
    return cell;
}