CODEWITHSUNDEEP
iosswiftxcode
Enkha
Enkha

Reputation: 430

Ambiguous reference to member 'collectionView' Swift 4

I have a problem changing the Layout of UICollectionView from Flow to Custom.

I referenced the address "https://www.raywenderlich.com/392-uicollectionview-custom-layout-tutorial-pinterest"

I tried adding the example code to the existing code

override func viewDidLoad () 
{
    super.viewDidLoad ()

    self.setViewLayer ()
    self.addPullToRefresher ()
    self.addGesture ()
    self.addDropDownView ()
    self.getArtList ()
    self.artCollectionView.regCells (cells: ["HomeCollectionViewCell"])

    NotificationCenter.default.addObserver(self, selector: #selector(self.getNotification(_:)), name: Notification.Name(Constants.GET_ARTS), object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(self.resetArts(_:)), name: Notification.Name(Constants.GET_ARTS_RESET), object: nil)
    NotificationCenter.default.addObserver(self, selector: #selector(self.searchArts(_:)), name: Notification.Name(Constants.HOME_SEARCH), object: nil)
        
    if let layout = collectionView?.collectionViewLayout as? PinterestLayout
    {
        layout.delegate = self
    }
}

extension HomeViewController: PinterestLayoutDelegate
{
    func collectionView (_ collectionView: UICollectionView, heightForPhotoAtIndexPath indexPath: IndexPath) -> CGFloat
    {
        return photos [indexPath.item].image.size.height
    }  
}

But I am getting an error at

collectionView?.collectionViewLayout as? PinterestLayout

Error states

Ambiguous reference to member 'collectionView (_: willDisplay: forItemAt :)'

Please help me.

Upvotes: 0

Views: 914

Answers (1)

rmaddy
rmaddy

Reputation: 318884

Based on other code in viewDidLoad, your collection view variable is named artCollectionView, not collectionView. The error is really misleading in this case.

Change:

if let layout = collectionView?.collectionViewLayout as? PinterestLayout

to:

if let layout = artCollectionView.collectionViewLayout as? PinterestLayout

Upvotes: 1

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