ios - 在像 GIF 一样循环播放的 UIView 中自动播放 MP4 视频？

Question

一旦用户转到此特定页面，我希望视频立即开始在没有控件的 UIView 中播放。它会像 gif 一样循环播放。这是我从 github 上找到的代码，它似乎不起作用。当我拉起页面时，它只显示白色的 UIView。我的文件名也是正确的。

import Foundation
import UIKit
import AVKit
import AVFoundation

class RampWallPush: UIViewController {

@IBOutlet weak var videoView: UIView!

var player: AVPlayer?

override func viewDidLoad() {
    super.viewDidLoad()

    // Load video resource
    if let videoUrl = Bundle.main.url(forResource: "small", withExtension: "mp4") {

        // Init video
        self.player = AVPlayer(url: videoUrl)
        self.player?.isMuted = true
        self.player?.actionAtItemEnd = .none

        // Add player layer
        let playerLayer = AVPlayerLayer(player: player)
        playerLayer.videoGravity = AVLayerVideoGravity.resizeAspectFill
        playerLayer.frame = view.frame

        // Add video layer
        self.videoView.layer.addSublayer(playerLayer)

        // Play video
        self.player?.play()

        // Observe end
        NotificationCenter.default.addObserver(self, selector: #selector(playerItemDidReachEnd), name: NSNotification.Name.AVPlayerItemDidPlayToEndTime, object: self.player?.currentItem)
    }
}

// MARK: - Loop video when ended.
@objc func playerItemDidReachEnd(notification: NSNotification) {
    self.player?.seek(to: CMTime.zero)
    self.player?.play()
}

}

Answer 1

您的代码可以正常工作，您需要验证该文件是否存在于您的项目中并且......

    // Load video resource
  if let videoUrl = Bundle.main.url(forResource: "sample", withExtension: "mp4") {
        // exists
  }
  else {

     print("NoFile")
  }

所以选择文件和

---

你需要改变框架

 playerLayer.frame = CGRect(x:0,y:0,width:200,height:300) 
 self.videoView.layer.addSublayer(playerLayer)
 playerLayer.center = videoView.center 

创建了一个演示 Here