avplayer怎么wifi传输

AVPlayer是iOS系统中常用的一个音视频播放器框架，它可以用来播放本地和网络上的音视频文件。在AVPlayer中，播放网络上的音视频文件需要使用URL来加载和播放，只需要将远程文件的URL传递给AVPlayer对象即可。

在AVPlayer中实现WiFi传输有以下几种方式：

1. 使用NSURLConnection下载文件

```swift

let url = URL(string: "http://example.com/path/to/file.mp4")

let request = URLRequest(url: url!)

let connection = NSURLConnection(request: request, delegate: self)

connection?.start()

```

然后在接收到数据时使用AVPlayer加载并播放

```swift

func connection(_ connection: NSURLConnection, didReceive data: Data) {

player = AVPlayer(playerItem: AVPlayerItem(url: url))

player.play()

}

```

2. 使用NSURLSession下载文件

```swift

let url = URL(string: "http://example.com/path/to/file.mp4")

let sessionConfig = URLSessionConfiguration.default

let session = URLSession(configuration: sessionConfig, delegate: self, delegateQueue: nil)

let task = session.downloadTask(with: url!)

task.resume()

```

然后在下载完成时把文件保存下来，并使用AVPlayer加载并播放

```swift

func urlSession(_ session: URLSession, downloadTask: URLSessionDownloadTask, didFinishDownloadingTo location: URL) {

let destinationURL = // ...

try? FileManager.default.moveItem(at: location, to: destinationURL)

player = AVPlayer(playerItem: AVPlayerItem(url: destinationURL))

player.play()

}

```

3. 使用第三方库Alamofire下载文件

```swift

let url = "http://example.com/path/to/file.mp4"

let destination: DownloadRequest.DownloadFileDestination = { _, _ in

let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]

let destinationURL = URL(fileURLWithPath: documentsPath).appendingPathComponent("/path/to/file.mp4")

return (destinationURL, [.removePreviousFile, .createIntermediateDirectories])

}

Alamofire.download(url, to: destination).response { response in

if let destinationURL = response.destinationURL {

self.player = AVPlayer(playerItem: AVPlayerItem(url: destinationURL))

self.player.play()

}

}

```

在使用Alamofire下载文件时，需要注意下载完成后保存文件的路径和名称，并将其传递给AVPlayer。

以上是几种在AVPlayer中实现WiFi传输的方式，根据具体的需求和项目要求选择适合的方式进行实现即可。