我一直在从事一个小项目,该项目涉及从网络服务器下载视频文件,将所述文件复制到文档目录,然后通过 AVPlayer 播放它。
将文件下载到文档目录并不是问题。我可以毫无问题地下载该文件并保存它。但是,当将文件加载到 AVPlayer 中时,并且在执行此操作时,我在 AVPlayerViewController 的实例中播放该文件,视频 Controller 会按预期弹出,但视频不会加载。
我意识到,在模拟器中测试时,每次重建项目时文档目录都会发生变化。这就是为什么我在播放之前检查文件是否存在,尽管我知道文件存在,但它仍然拒绝播放。
这是我的播放器代码:
let fileName = downloadURL.characters.split("/").map(String.init).last as String!
let fileNameHD = downloadURLHD.characters.split("/").map(String.init).last as String!
let downloadFilePath = getDocumentsDirectory() + "/" + "\(fileNameHD)"
let checkValidation = NSFileManager.defaultManager()
if checkValidation.fileExistsAtPath(downloadFilePath){
print("video found")
}
let videoFile = NSURL(string:downloadFilePath)
let player = AVPlayer(URL: videoFile!)
let playerController = AVPlayerViewController()
playerController.player = player
playerController.view.frame = self.view.frame
player.play()
self.presentViewController(playerController, animated: true) {
playerController.player!.play()
}
最佳答案
每次我们重建应用程序时,我们的文档目录路径都会发生变化。
因此您无法播放旧文档目录路径中的视频。因此,您必须保存 URL 的最后一个路径部分。下载此路径上的视频后,您的文档目录 url 如下所示:-
let videoURL = "/var/mobile/Containers/Data/Application/1F6CDF42-3796-4153-B1E8-50D09D7F5894/Documents/2019_02_20_16_52_47-video.mp4"
var videoPath = ""
if let url = videoURL {
videoPath = url.lastPathComponent
}
print(videoPath)
// It will print the last path of your video url: - "2019_02_20_16_52_47-video.mp4"
现在将此路径保存在核心数据库或 Sqlite 或用户默认值中您想要的任何位置。然后如果您想再次播放视频。因此,您必须从保存位置获取此路径。
Note:- In Below function you have to pass the last path component of your video. How to call this function.
func playVideo() {
self.startVideoFrom(videoPath:"2019_02_20_16_52_47-video.mp4")
}
// Play Video from path
func startVideoFrom(videoPath: String) {
let outputMineURL = self.createNewPath(lastPath: videoPath)
let player = AVPlayer(url: outputMineURL)
let playerViewController = AVPlayerViewController()
playerViewController.player = player
self.present(playerViewController, animated: true) {
playerViewController.player!.play()
}
}
/// Generate the new document directory path everytime when you rebuild the app and you have to append the last component of your URL.
func createNewPath(lastPath: String) -> URL {
let documentsDirectory = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
let destination = URL(fileURLWithPath: String(format: "%@/%@", documentsDirectory,lastPath))
return destination
}
For more reference, you can see this question:- https://stackoverflow.com/q/47864143/5665836
关于ios - 文档目录中的 AVPlayer 和视频,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36629056/