今天換開發Video的頁面，跟Photo的很像，唯獨Cell的內容有一點點不一樣

• Cell的Identifier和Class改為VideoTableViewCell
• 於中間加入播放按鈕，按下後會播放影片
  

建立VideoTableViewCell.swift

import UIKit
class VideoTableViewCell: UITableViewCell {
    @IBOutlet weak var videoImage: UIImageView!
    @IBOutlet weak var playButton: UIButton!
    @IBOutlet weak var title: UITextField!
    @IBOutlet weak var detail: UITextView!
    var id: Int64!
}

VideoViewController.swift內容大部分都跟Photo一樣，只有在cell的顯示，和「+」的開啟與取得影片有差異而已

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: cellIdentifier, for: indexPath) as! VideoTableViewCell
    // 設定id
    cell.id = self.searchList[indexPath.row].id
    // 設定Title的文字
    cell.title.text = self.searchList[indexPath.row].title
    // 把id指定給此TextField，供異動時的id參考
    cell.title.tag = Int(self.searchList[indexPath.row].id)
    // 設定TextView的文字
    cell.detail.text = self.searchList[indexPath.row].detail
    // 把id指定給此TextView，供異動時的id參考
    cell.detail.tag = Int(self.searchList[indexPath.row].id)
    // 設定位置index給button
    cell.playButton.tag = indexPath.row
    // 設定button的觸發動作
    cell.playButton.addTarget(self, action: #selector(openVideoPlayer), for: .touchUpInside)
    
    do {
        // 取得檔案路徑
        let filePath = documentsURL.appendingPathComponent(self.searchList[indexPath.row].path)
        // 擷取影片的縮圖
        let asset = AVURLAsset(url: filePath, options: nil)
        let imgGenerator = AVAssetImageGenerator(asset: asset)
        let cgImage = try imgGenerator.copyCGImage(at: CMTimeMake(0, 1), actualTime: nil)
        // 將縮圖指向給畫面
        cell.videoImage.image = UIImage(cgImage: cgImage)
    } catch {
    }
    return cell
}
// 當Play按鈕被點擊，開啟畫面播放影片
@objc func openVideoPlayer(_ sender: UIButton) {
    let filePath = documentsURL.appendingPathComponent(self.searchList[sender.tag].path)
    if FileManager.default.fileExists(atPath: filePath.path) {
        let player = AVPlayer(url: filePath)
        let playerController = AVPlayerViewController()
        playerController.player = player
        present(playerController, animated: true) {
            player.play()
        }
    }
}
// 選取影片後
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
    do {
        // 檢查dictionary是否正存在
        let documentsDirectory = NSURL(fileURLWithPath: NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0])
        let dataPath = documentsDirectory.appendingPathComponent(path)!
        try FileManager.default.createDirectory(atPath: dataPath.path, withIntermediateDirectories: true)
        
        // 取得此影片
        let videoURL: URL = info[UIImagePickerControllerMediaURL] as! URL
        // 新檔檔名，依照檔案副檔名儲存檔案類型
        let fileName = "\(formatter.string(from: Date())).\(videoURL.pathExtension)"
        let fileURL = documentsURL.appendingPathComponent(path + fileName)
        print(fileURL)
        
        // 將影片存檔入指定路徑下
        let myVideoVarData = try! Data(contentsOf: videoURL)
        try myVideoVarData.write(to: fileURL, options: .atomic)
        
        // 寫入資料庫
        sqlManager.insertMedia(event_id: event_id, type: type, title: fileName, detail: nil, path: path + fileName)
    } catch {
        print("\(error)")
    }
    // update the button label text
    self.reloadTableView()
    photoPiker.dismiss(animated: true, completion: nil)
}
// 按下＋按鈕，開啟影片選擇界面，這邊注意，mediaTypes要為public.movie才看得到影片類型的選擇喔！
@IBAction func add(_ sender: UIBarButtonItem) {
    if UIImagePickerController.isSourceTypeAvailable(.savedPhotosAlbum) {
        photoPiker.sourceType = .savedPhotosAlbum
        photoPiker.delegate = self
        photoPiker.mediaTypes = ["public.movie"]
        self.present(photoPiker, animated: true, completion: nil)
    }
}

完成後的畫面如下