CODEWITHSUNDEEP
swiftuitableviewmetadatareuseidentifierapi-linkpreview
Saad Rehman
Saad Rehman

Reputation: 403

How to set the metadata of LPLinkView to nil

I'm using LPLinkView in a tableview cell. While scrolling the reused cell initially displays the LinkProvider of the recycled cell and then changes as soon as the network call completes. I want to prepare the cell for reuse. Is there a way to set the link providers metadata to nil? (similar to imagview.image = nil)

I'll do it in the prepareForReuse function.

Upvotes: 0

Views: 484

Answers (1)

Tarun Tyagi
Tarun Tyagi

Reputation: 10092

You can do it like this -

class MyTableViewCell: UITableViewCell {
    let linkView = LPLinkView(frame: .zero)
    var metadataProvider = LPMetadataProvider()
    
    override func prepareForReuse() {
        super.prepareForReuse()
        
        // Cancel in-flight metadata fetch request
        metadataProvider.cancel()

        // Assign an empty metadata object, all properties inside this are nil
        linkView.metadata = LPLinkMetadata()
    }
    
    func populateData(json: [String: Any]) {
        if let link = json["link"] as? String, let url = URL(string: link) {
            metadataProvider = LPMetadataProvider()
            metadataProvider.startFetchingMetadata(for: url, completionHandler: { [weak self] (metadata, error) in
                if let metadata = metadata, error == nil {
                    self?.linkView.metadata = metadata
                }
            })
        }
    }
    
}

Upvotes: 1

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