如何在应用程序中接收远程控制事件的同时播放iPod应用程序中的音乐？

import AVFoundation

// 设置音频会话
let audioSession = AVAudioSession.sharedInstance()
do {
    try audioSession.setCategory(.playback, mode: .default, options: [])
    try audioSession.setActive(true)
} catch {
    print("Failed to set audio session category.")
}

// 启用远程控制事件接收
UIApplication.shared.beginReceivingRemoteControlEvents()

override func remoteControlReceived(with event: UIEvent?) {
    guard let event = event else { return }
    
    if event.type == .remoteControl {
        switch event.subtype {
        case .remoteControlPlay:
            // 执行播放操作
            break
        case .remoteControlPause:
            // 执行暂停操作
            break
        case .remoteControlNextTrack:
            // 执行下一曲操作
            break
        case .remoteControlPreviousTrack:
            // 执行上一曲操作
            break
        default:
            break
        }
    }
}

import AVFoundation
import MediaPlayer

// 播放音乐文件
let url = // 音乐文件的URL
let player = AVPlayer(url: url)
player.play()

// 或者使用MPMediaPickerController选择音乐文件
let mediaPicker = MPMediaPickerController(mediaTypes: .music)
mediaPicker.delegate = self
present(mediaPicker, animated: true, completion: nil)