视频播放结束后如何返回 tvOS 中的 Main.storyboard？

Posted 2023-03-08

【中文标题】视频播放结束后如何返回 tvOS 中的 Main.storyboard？

【英文标题】：How to return back to Main.storyboard in tvOS after playback of video ends?

【发布时间】：2015-12-31 09:43:25

【问题描述】：

我有一个播放器，并且已被指示如何为itemDidFinishPlaying 设置通知：(AVPlayerItemDidPlayToEndTimeNotification)，但是，由于某种原因，该通知函数不会在结束时调用视频。

 import UIKit
 import AVKit

 class ViewController: UIViewController 

 let playerLayer = AVPlayerLayer()

func playMe(inputfile: String, inputtype: String) 


    let path = NSBundle.mainBundle().pathForResource(inputfile, ofType:inputtype)!
    let videoURL = NSURL(fileURLWithPath: path)
    let playerItem = AVPlayerItem(URL: videoURL)
    let player = AVPlayer(playerItem: playerItem)
    let playerLayer = AVPlayerLayer(player: player)
    playerLayer.frame = self.view.bounds
    self.view.layer.addSublayer(playerLayer)
    player.play()
    print ("Play has started")

    NSNotificationCenter.defaultCenter().addObserver(self, selector: "itemDidFinishPlaying:", name: AVPlayerItemDidPlayToEndTimeNotification, object: playerItem)
    print ("Item Did Finish Playing -notification added")



func itemDidFinishPlaying(notification: NSNotification) 
    playerLayer.removeFromSuperlayer()
    print ("Notification sent with removeFromSuperlayer done")


override func viewDidLoad() 
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

我错过了什么？我试过在viewDidLoad() 有通知条目，我试过从itemDidFinishPlaying 的末尾删除：，我试过在播放开始之前设置通知，我在NSNotificationCenter 中有object: nil 和object:playerItem..

我真的很不知道如何进行。

这些类型的东西是否仅在具有 AVPlayerViewController 或按下按钮时生成的辅助视图控制器时可用？

【参考方案1】：

如果您没有对 AVPlayer 实例的引用，这似乎会发生。试试这个：

import UIKit
import AVFoundation

class ViewController: UIViewController 
    var player: AVPlayer?
    var playerLayer: AVPlayerLayer?

    func playMe(inputfile: String, inputtype: String) 
        guard let path = NSBundle.mainBundle().pathForResource(inputfile, ofType: inputtype) else 
            print("couldn't find \(inputfile).\(inputtype)")

            return
        

        player = AVPlayer()
        playerLayer = AVPlayerLayer(player: player)

        let playerItem = AVPlayerItem(URL: NSURL(fileURLWithPath: path))

        player?.replaceCurrentItemWithPlayerItem(playerItem)

        playerLayer.frame = view.bounds

        NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ViewController.itemDidFinishPlaying(_:)), name: AVPlayerItemDidPlayToEndTimeNotification, object: player?.currentItem)

        view.layer.insertSublayer(playerLayer!, atIndex: 0)

        player?.play()
    

    func itemDidFinishPlaying(notification: NSNotification) 
        playerLayer?.removeFromSuperlayer()
        print ("Notification sent with removeFromSuperlayer done")
    

    override func viewDidLoad() 
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    

这应该可以解决问题。

别忘了移除观察者

deinit 
    NSNotificationCenter.defaultCenter().removeObserver(self)