ios – UICollectionView Crash: Anticipated dequeued view to be returned – Want Assist Fixing Cell Reuse Subject

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ios – UICollectionView Crash: Anticipated dequeued view to be returned – Want Assist Fixing Cell Reuse Subject


I am going through a recurring crash in my iOS app with a UICollectionView. The crash message is as follows:

Error Message:
Thread 1: “Anticipated dequeued view to be returned to the gathering view in preparation for show. When the gathering view’s knowledge supply is requested to offer a view for a given index path, be sure that a single view is dequeued and returned to the gathering view. Keep away from dequeuing views and not using a request from the gathering view. For retrieving an current view within the assortment view, use -[UICollectionView cellForItemAtIndexPath:] or -[UICollectionView supplementaryViewForElementKind:atIndexPath:].”

Background and Setup:

I’m engaged on a venture that entails a UICollectionView that shows information gadgets. I’m utilizing a customized UICollectionViewCell (NewsCollectionViewCell) to characterize every merchandise. The UICollectionView has been registered correctly, and I’m utilizing a typical implementation for dequeuing and configuring cells.

Here is a simplified model of my code:

Code: UICollectionView Cell Setup

class NewsCollectionViewCell: UICollectionViewCell {
    static let reuseId = "NewsCollectionViewCell"

    personal let imageNews: UIImageView = { ... }()
    personal let dateNews: UILabel = { ... }()
    personal let nameNews: UILabel = { ... }()
    personal let descriptionNews: UILabel = { ... }()
    personal let readMoreLabel: UILabel = { ... }()

    override init(body: CGRect) {
        tremendous.init(body: body)
        setupConstraints()
    }

    required init?(coder: NSCoder) {
        fatalError("init(coder:) has not been carried out")
    }

    override func prepareForReuse() {
        tremendous.prepareForReuse()
        imageNews.picture = nil
        dateNews.textual content = ""
        nameNews.textual content = ""
        descriptionNews.textual content = ""
    }

    func fill(with information: Information) {
        // Populate the cell with knowledge
    }

    personal func setupConstraints() {
        // SnapKit constraints for structure
    }
}

Code: Assortment View Setup and Cell Configuration

extension NewsViewController: UICollectionViewDataSource {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection part: Int) -> Int {
        return information.depend
    }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        guard let cell = collectionView.dequeueReusableCell(withReuseIdentifier: NewsCollectionViewCell.reuseId, for: indexPath) as? NewsCollectionViewCell else {
            fatalError("Didn't dequeue NewsCollectionViewCell")
        }

        cell.fill(with: information[indexPath.item])
        return cell
    }
}

What I’ve Tried So Far:

Checked Reuse Identifier: The reuse identifier for NewsCollectionViewCell is appropriately set and constant in every single place.

Registered Cell Class: The cell is registered in setupCollectionView(), as proven beneath:

personal func setupCollectionView() {
    newsCollectionView.delegate = self
    newsCollectionView.dataSource = self
    newsCollectionView.register(NewsCollectionViewCell.self, forCellWithReuseIdentifier: NewsCollectionViewCell.reuseId)
}

Averted Handbook Reuse: I’ve ensured that I am not manually managing or holding references to dequeued cells.

prepareForReuse: Applied prepareForReuse in NewsCollectionViewCell to reset all properties.

Examined on Completely different Units and iOS Variations: The problem persists throughout totally different gadgets and simulators.

The Drawback:

The crash happens inconsistently, normally when scrolling quickly by way of the gathering view or after a number of reloads. The error message factors to a difficulty with the cell reuse mechanism. Particularly, it means that the cell being dequeued won’t be returned appropriately, or that a number of dequeuing actions may be occurring concurrently.

Questions:

Why does the error nonetheless persist although I am following the usual dequeuing method?

Might there be a difficulty with my customized cell class (NewsCollectionViewCell) or the way it’s being reused?

Is there a greater option to deal with the state of affairs the place dequeuing fails, reasonably than utilizing a fatalError or creating a brand new cell occasion?

Is it attainable that the issue arises from utilizing SnapKit for structure? Ought to I swap to a different method for setting constraints?

I am working out of concepts on what might be inflicting this crash. Any assist or ideas could be enormously appreciated!

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