在IOS核心音频中,您如何找到文件播放器音频单元的真实当前播放头位置？

import AVFoundation

var audioPlayer: AVAudioPlayer?

func playAudio(url: URL) {
    do {
        audioPlayer = try AVAudioPlayer(contentsOf: url)
        audioPlayer?.play()
    } catch {
        print("Error playing audio: \(error.localizedDescription)")
    }
}

func getCurrentPlaybackTime() -> TimeInterval? {
    return audioPlayer?.currentTime
}

if let currentTime = getCurrentPlaybackTime() {
    print("当前播放头位置: \(currentTime) 秒")
} else {
    print("无法获取当前播放头位置")
}