The delegate function is not getting called on button Click

Question

In Swift xcode not able to call the delegate function though defined correctly. Using it to get the value of active cell.

button declaration file

import UIKit

protocol CellDelegate : class {

    func didClickPlayButton(_ sender: VideoTableViewCell)
}

class VideoTableViewCell: UITableViewCell {

    @IBOutlet weak var cellView: UIView!
    @IBOutlet weak var VideoThumbnail : UIImageView!
    @IBOutlet weak var VideoName: UILabel!
    @IBOutlet weak var uploadDate: UILabel!

    @IBOutlet weak var playButton: UIButton!

     weak var Delegate: CellDelegate?

    @IBAction func pressedPlay(_ sender: UIButton) {

        Delegate?.didClickPlayButton(self)
        print("PLAY")
    }

}

Function declaration file

import UIKit

import FirebaseAuth

import FirebaseDatabase

import AVFoundation

import AVKit

class VideoVC: UIViewController,UITableViewDelegate,UITableViewDataSource,CellDelegate {

let avPlayerViewController = AVPlayerViewController()
var avPlayer : AVPlayer?

func didClickPlayButton(_ sender : VideoTableViewCell) {

    let indexPath = self.tableview.indexPath(for: sender)

    print("Play Button Pressed")

    if let index = indexPath?.row
    {
        let movieUrl : NSURL? = NSURL(string : posts[(index)].noticeURL)

        if let url = movieUrl
        {
            self.avPlayer = AVPlayer(url: url as URL)
            self.avPlayerViewController.player = self.avPlayer
            self.present(self.avPlayerViewController, animated: true, completion: {
            self.avPlayerViewController.player?.play()
            })
        }
    }
}

@IBOutlet weak var tableview: UITableView!

var posts = [Post]()


func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return posts.count
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableview.dequeueReusableCell(withIdentifier: "Videocell") as! VideoTableViewCell
    cell.selectionStyle = .none
    cell.uploadDate?.text = posts[indexPath.row].uploadDate
    cell.VideoName?.text = posts[indexPath.row].noticeName
    cell.VideoThumbnail?.image = thumbnail(sourceURL: (URL(string : posts[indexPath.row].noticeURL)!))
    return cell
}



override func viewDidLoad() {
    super.viewDidLoad()
    tableview.dataSource = self
    self.tableview.rowHeight = 300
      loadposts()
}

func loadposts()
{
    Database.database().reference().child("Videos").observe(.childAdded) { (snapshot : DataSnapshot) in
        if let dict = snapshot.value as? [String : Any]
        {
            let uploaddate = dict["Date"] as! String
            let noticename = dict["Name"] as! String
            let ImageUrl = dict["URL"] as! String
            let post = Post(uploadedDate: uploaddate, nameofnotice: noticename, URLofnotice: ImageUrl)

            self.posts.append(post)
            self.tableview.reloadData()
        }
    }
}
func thumbnail(sourceURL:URL) -> UIImage {
    let asset = AVAsset(url: sourceURL)
    let imageGenerator = AVAssetImageGenerator(asset: asset)
    let time = CMTime(seconds: 1, preferredTimescale: 1)
    let imageRef = try? imageGenerator.copyCGImage(at: time, actualTime: nil)
    if imageRef != nil
    {
        let uiimage = UIImage(cgImage: imageRef!)
        return uiimage
    }
    else
    {
        return #imageLiteral(resourceName: "BG_DDIT")
    }
}

}

Sh_Khan Sh_Khan · Accepted Answer · 2018-03-24T13:38:36

In cellForRow

cell.Delegate = self

and implement the delegate method inside PdfVC

func didClickPlayButton(_ sender: VideoTableViewCell){----}

The delegate function is not getting called on button Click

1 Answers