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我有一個包含一個按鈕的自定義單元格的表視圖。根據選擇按鈕的行，我想要播放特定的視頻文件。然而，現在我的代碼設置方式無論按下哪個按鈕都會顯示相同的視頻文件。我怎樣才能配置我的代碼，以確保每行顯示我喜歡的不同視頻？如何讓按鈕播放不同的視頻取決於它所在的行？
代碼表視圖：
import UIKit
import AVKit
import AVFoundation
class DrillsViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var player: AVPlayer?
var arrayForKey2 = [[String]]()
var keyIndex = Int()
var headLabel = String()
var labels = Array(trainingDict.keys)
@IBOutlet weak var tableView: DrillsTableView!
@IBOutlet weak var drillLabel: UILabel!
@IBOutlet weak var labelBackground: UIView!
@IBAction func back(_ sender: Any) {
performSegue(withIdentifier: "back", sender: self)
}
public func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int
{
return arrayForKey2.count
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
public func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
let cell = tableView.dequeueReusableCell(withIdentifier: "cell" , for: indexPath) as! DrillsTableViewCell
//clear background color needed in order to display gradient cell
cell.backgroundColor = UIColor.clear
//gradient configuration
gradient = CAGradientLayer()
gradient.frame = tableView.bounds
gradient.colors = [UIColor.black.cgColor, UIColor.darkGray.cgColor, UIColor.black.cgColor]
tableView.layer.insertSublayer(gradient, at: 0)
gradient.startPoint = CGPoint(x: 0.0, y: 0.0)
gradient.endPoint = CGPoint(x: 1.0, y: 1.0)
//Possible method for 'drillLabel' gradient
//drillLabelGradient = CAGradientLayer()
//drillLabelGradient.frame = labelBackground.bounds
//drillLabelGradient.colors = [UIColor.red.cgColor, UIColor.darkGray.cgColor, UIColor.black.cgColor]
//labelBackground.layer.insertSublayer(drillLabelGradient, at: 0)
//drillLabelGradient.startPoint = CGPoint(x: 0.0, y: 0.0)
//drillLabelGradient.endPoint = CGPoint(x: 1.0, y: 1.0)
drillLabel.font = UIFont(name: "Symbol", size: 24.0)
//attributes for watch/play button
cell.playButton.layer.shadowColor = UIColor.black.cgColor
cell.playButton.layer.shadowOffset = CGSize(width: 2, height: 2)
cell.playButton.layer.shadowOpacity = 0.7
cell.playButton.layer.shadowRadius = 1
//details for cell label display
cell.borderWidth = 1.5
cell.borderColor = UIColor.white
cell.drillTitle.text = "\(arrayForKey2[keyIndex][indexPath.row])"
cell.drillTitle.font = UIFont(name: "Symbol", size: 18.0)
cell.drillTitle.textColor = UIColor.white
return cell
}
override func viewDidLoad() {
super.viewDidLoad()
tableView.delegate = self
tableView.dataSource = self
drillLabel.text = labels[keyIndex]
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
代碼表視圖單元格：
import UIKit
import AVFoundation
import AVKit
class VideoPlayerView: UIView {
let pauseButton: UIButton = {
let button = UIButton(type: .system)
button.setImage(#imageLiteral(resourceName: "Triangle 2"), for: .normal)
button.translatesAutoresizingMaskIntoConstraints = false
button.tintColor = UIColor.white
button.isHidden = false
button.addTarget(self, action: #selector(handlePause), for: .touchUpInside)
return button
}()
var isPlaying = false
func handlePause() {
if isPlaying {
player?.pause()
pauseButton.alpha = 1.0 }
else { player?.play()
pauseButton.alpha = 0.01
}
isPlaying = !isPlaying
}
//container view that holds sublayers for the video control objects
let controlsContainerView: UIView = {
let view = UIView()
view.backgroundColor = UIColor(white: 0, alpha: 1.0)
return view
}()
override init(frame: CGRect) {
super.init(frame: frame)
setupPlayerView()
//configures container view (video's background)
controlsContainerView.frame = frame
addSubview(controlsContainerView)
backgroundColor = UIColor.black
//following adds pause/play button to video
controlsContainerView.addSubview(pauseButton)
pauseButton.centerXAnchor.constraint(equalTo: centerXAnchor).isActive = true
pauseButton.centerYAnchor.constraint(equalTo: centerYAnchor).isActive = true
}
var player: AVPlayer?
//function that sets up video playback
private func setupPlayerView() {
//variable that contains video url
let fileUrl = URL(fileURLWithPath: "/Users/jordanlagrone/Desktop/BlackHeartBB/BlackHeartBB/dunk.mov")
player = AVPlayer(url: fileUrl)
//video only renders if you specify 'playerLayer'
let playerLayer = AVPlayerLayer(player: player)
self.layer.insertSublayer(playerLayer, at: 1)
playerLayer.frame = frame
player?.play()
//attached obeserver of 'player' to tell when 'player' is ready
player?.addObserver(self, forKeyPath: "currentItem.loadedTimeRanges", options: .new, context: nil)
}
//method called every time you add obserever to an object
override func observeValue(forKeyPath keyPath: String?, of object: Any?, change: [NSKeyValueChangeKey : Any]?, context: UnsafeMutableRawPointer?) {
//strring that lets AVPlayer know its ready
if keyPath == "currentItem.loadedTimeRanges" {
//configures container view while video is playing
controlsContainerView.backgroundColor = UIColor.clear
pauseButton.alpha = 0.05
isPlaying = true
}
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
class DrillsTableViewCell: UITableViewCell {
var videoURL:[URL] = [URL(fileURLWithPath: "/Users/jordanlagrone/Desktop/BlackHeartBB/BlackHeartBB/dunk.mov"), URL(fileURLWithPath: "/Users/jordanlagrone/Desktop/BlackHeartBB/BlackHeartBB/mk.MOV")]
var video = URL(fileURLWithPath: String())
@IBOutlet weak var logoImage: UIImageView!
@IBOutlet weak var drillTitle: UILabel!
@IBOutlet weak var playButton: UIButton!
@IBAction func watchButton(_ sender: Any) {
print(123)
//controls video background view
if let keyWindow = UIApplication.shared.keyWindow {
let view = UIView(frame: keyWindow.frame)
view.backgroundColor = UIColor.white
view.frame = CGRect(x: 0.0, y: 0.0, width: keyWindow.frame.width, height: keyWindow.frame.height)
let videoPlayerFrame = CGRect(x: 0, y: 0, width: keyWindow.frame.width, height: keyWindow.frame.width * 9/16)
let videoPlayerView = VideoPlayerView(frame: videoPlayerFrame)
view.addSubview(videoPlayerView)
keyWindow.addSubview(view)
UIView.animate(withDuration: 0.5, delay: 0, options: .curveEaseOut, animations: {
view.frame = keyWindow.frame
}, completion: { (completedAnimation) in
//possible features implemented later
UIApplication.shared.isStatusBarHidden = true
})
}
}
}
在定義屬性的cell called讓'videoUrl'並在你的cellForRow方法中傳遞url對應的索引路徑 –
你可以舉一個使用代碼的例子嗎？你的解釋對於像我這樣的初學者來說太模糊了 –
我對你的問題有點困惑，那就是爲什麼不回答，你需要在每個單元格中播放不同的視頻網址？和你的網址在你的ViewController中？請澄清我的這些問題，我會提供一個答案 –