iOS网络音频url存储到本地播放

要实现将网络音频URL存储到本地并播放，可以按照以下步骤进行操作：

1. 首先，使用AVPlayer或AVPlayerViewController来播放网络音频。例如：

let url = URL(string: "http://example.com/audio.mp3")
let player = AVPlayer(url: url!)
let playerViewController = AVPlayerViewController()
playerViewController.player = player
present(playerViewController, animated: true) {
    player.play()
}

2. 接下来，使用URLSession来下载音频文件并将其保存到本地。例如：

let url = URL(string: "http://example.com/audio.mp3")
let task = URLSession.shared.downloadTask(with: url!) { (location, response, error) in
    guard let location = location else { return }
    let documentsUrl = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
    let destinationUrl = documentsUrl.appendingPathComponent("audio.mp3")
    do {
        try FileManager.default.moveItem(at: location, to: destinationUrl)
        // 播放本地音频
        let player = AVPlayer(url: destinationUrl)
        let playerViewController = AVPlayerViewController()
        playerViewController.player = player
        present(playerViewController, animated: true) {
            player.play()
        }
    } catch {
        print(error)
    }
}
task.resume()

3. 最后，为了节省空间，可以在不需要时删除本地音频文件。例如：

let fileManager = FileManager.default
let documentsUrl = fileManager.urls(for: .documentDirectory, in: .userDomainMask).first!
let destinationUrl = documentsUrl.appendingPathComponent("audio.mp3")
do {
    try fileManager.removeItem(at: destinationUrl)
} catch {
    print(error)
}

以上就是实现将网络音频URL存储到本地并播放的步骤。