UICollectionView won’t load images

Asked Sep 14 '17 at 17:18

Active Sep 14 '17 at 17:30

Viewed 24 times

I want to show Flickr images in a collection view. Here's how I fetch the images in viewDidLoad():

FlickrApi.fetchPhotos(completion: { photos, error in
    self.photos = photos as! [URL]
    self.collectionView?.reloadData()
})

The images get fetched but they don't show up as UIImageView in cellForItemAt method of UICollectionView. Instead, I get:

unexpectedly found nil while unwrapping an Optional value

where I load the images for the cell even though the self.photos gets populated with image URLs before I load the images like so:

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! FlickrCell

    cell.flickrPhoto.pin_setImage(from: self.photos[indexPath.row])

    return cell
}

edited Sep 14 '17 at 17:30

rmaddy

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asked Sep 14 '17 at 17:18

waseefakhtar

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Which line exactly causes the error? – rmaddy Sep 14 '17 at 17:20
@rmaddy, the `cell.flickrPhoto.pin_setImage(from: self.photos[indexPath.row])` line. – waseefakhtar Sep 14 '17 at 17:21
Show the `cellForAt` and the `pin_setImage` code – Paolo Sep 14 '17 at 17:21
In that line, which property is declared as an optional? Is it `cell.flickrPhoto` or `self.photos`? – rmaddy Sep 14 '17 at 17:22
@Paolo Edited the OP with the method. `cell.flickrPhoto.pin_setImage(from: self.photos[indexPath.row])` is where I get the error. – waseefakhtar Sep 14 '17 at 17:22
@rmaddy `cell.flickrPhoto` is an optional. – waseefakhtar Sep 14 '17 at 17:36
As discussed in the duplicate linked at the top of your question, you probably forgot to connect the cell's outlet and it is `nil` which is causing the error. – rmaddy Sep 14 '17 at 17:47

UICollectionView won’t load images

0 Answers0