AVKit – 视频片段仅循环 2 次

Posted 2023-03-08

【中文标题】AVKit – 视频片段仅循环 2 次

【英文标题】：AVKit – Video clips loop just 2 times

【发布时间】：2018-11-28 16:54:43

【问题描述】：

我有四个视频剪辑，我想无休止地播放它们。但是我的AVQueuePlayer() 只循环了所有视频 2 次然后停止。

如何让他们玩不完？

这是我的代码：

import UIKit
import AVKit

class ViewController: UIViewController 

    private let player = AVQueuePlayer()
    let clips = ["001", "002", "003", "004"]
    private var token: NSKeyValueObservation?
    var avPlayerView = AVPlayerViewController()

    override func viewDidLoad() 
        super.viewDidLoad()
        self.addAllVideosToPlayer()
    
    override func viewDidAppear(_ animated: Bool) 
        super.viewDidAppear(true)
        self.addAllVideosToPlayer()
    

    func addAllVideosToPlayer() 
        avPlayerView.player = player

        for clip in clips 
            let urlPath = Bundle.main.path(forResource: clip, ofType: "m4v")!
            let url = URL(fileURLWithPath: urlPath)
            let playerItem = AVPlayerItem(url: url)
            player.insert(playerItem, after: player.items().last)

            token = player.observe(\.currentItem)  [weak self] player, _ in
                if self!.player.items().count == 1  self?.addAllVideosToPlayer() 
            
            avPlayerView.showsPlaybackControls = false
            player.volume = 0.0
        
        present(avPlayerView, animated: true, completion:  self.player.play() )
    

【问题讨论】：

不确定。但我认为他们玩了两次，因为你在viewDidLoad 和viewDidAppear 中两次调用addAllVideosToPlayer。问题可能是永远不会触发以递归方式调用 addAllVideosToPlayer 的回调。

This 回答可以帮助你。唯一的问题是它位于Obj-C。

【参考方案1】：

我解决了我的问题。我删除了viewDidLoad()方法并将present()函数放入viewDidAppear()。

它是这样的：

override func viewDidAppear(_ animated: Bool) 
    super.viewDidAppear(true)
    self.addAllVideosToPlayer()
    present(avPlayerView, animated: true, completion:  self.player.play() )