从URL下载音频文件并在iOS应用程序中播放

import Foundation
import AVFoundation

class AudioPlayer {
    var audioPlayer: AVAudioPlayer?

    func downloadAndPlayAudio(from url: URL) {
        // 下载音频文件
        let request = URLRequest(url: url)
        let session = URLSession.shared
        let task = session.dataTask(with: request) { [weak self] (data, response, error) in
            guard let self = self else { return }

            if let error = error {
                print("下载音频文件时出错：\(error)")
                return
            }

            // 存储音频文件
            guard let audioData = data else { return }
            let fileManager = FileManager.default
            let documentsDirectory = fileManager.urls(for: .documentDirectory, in: .userDomainMask)[0]
            let audioFileURL = documentsDirectory.appendingPathComponent("downloadedAudio.m4a")

            do {
                try audioData.write(to: audioFileURL)
                print("音频文件下载完成并保存至本地：\(audioFileURL)")

                // 播放音频文件
                self.playAudio(from: audioFileURL)
            } catch {
                print("保存音频文件时出错：\(error)")
            }
        }
        task.resume()
    }

    func playAudio(from fileURL: URL) {
        do {
            audioPlayer = try AVAudioPlayer(contentsOf: fileURL)
            audioPlayer?.prepareToPlay()
            audioPlayer?.play()
        } catch {
            print("播放音频文件时出错：\(error)")
        }
    }
}

let audioPlayer = AudioPlayer()
let audioURL = URL(string: "https://example.com/audiofile.m4a")!
audioPlayer.downloadAndPlayAudio(from: audioURL)