ios - 将循环的 mp4 背景添加到 iOS 应用程序注册

Question

我想最终应用这段代码，让我的应用程序在用户登录他们的社交媒体帐户时看起来更漂亮一些。我已经尝试过以下代码，但我的应用程序似乎在 mp4 结束后立即崩溃。

import UIKit

import AVFoundation

class ViewController: UIViewController {

  var avPlayer: AVPlayer!
  var avPlayerLayer: AVPlayerLayer!
  var paused: Bool = false

  override func viewDidLoad() {
    super.viewDidLoad()
    let theURL = Bundle.main.url(forResource: "Yeet", withExtension: "mp4")

    avPlayer = AVPlayer(url: theURL!)
    avPlayerLayer = AVPlayerLayer(player: avPlayer)
    avPlayerLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
    avPlayer.volume = 0
    avPlayer.actionAtItemEnd = AVPlayer.ActionAtItemEnd.none

    avPlayerLayer.frame = view.layer.bounds
    view.backgroundColor = UIColor.clear;
    view.layer.insertSublayer(avPlayerLayer, at: 0)

    NotificationCenter.default.addObserver(self, selector: Selector(("playerItemDidReachEnd:")), name:       NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: avPlayer.currentItem)
  }

    @objc func playerItemDidReachEnd(notification: NSNotification) {
    let p: AVPlayerItem = notification.object as! AVPlayerItem
      p.seek(to: CMTime.zero)
  }

  override func viewDidAppear(_ animated: Bool) {
    super.viewDidDisappear(animated)
    avPlayer.play()
    paused = false
  }

  override func viewDidDisappear(_ animated: Bool) {
    super.viewDidDisappear(animated)
    avPlayer.pause()
    paused = true
  }
  override var preferredStatusBarStyle: UIStatusBarStyle {
    return .lightContent
  }

}

Answer 1

您是否尝试过使用 AVPlayerLooper ？

看起来像@iwasrobbed has a solution适用于 iOS 10+ 设备。这是示例代码:

private var looper: AVPlayerLooper?

...

let queuePlayer = AVQueuePlayer(playerItem: item)
looper = AVPlayerLooper(player: queuePlayer, templateItem: item)
videoPlayerLayer.player = queuePlayer

要在离开 View 后禁用循环，在末尾添加这段代码:

looper?.disableLooping()