将MPMediaItems与AVAudioPlayer一起使用

import MediaPlayer
import AVFoundation

class ViewController: UIViewController {
    var audioPlayer: AVAudioPlayer?

    override func viewDidLoad() {
        super.viewDidLoad()

        let mediaQuery = MPMediaQuery.songs()
        let songs = mediaQuery.items

        if let song = songs?.first {
            let url = song.assetURL
            do {
                audioPlayer = try AVAudioPlayer(contentsOf: url)
                audioPlayer?.play()
            } catch {
                print("Error: \(error.localizedDescription)")
            }
        }
    }
}