Swift:尝试使用UISlider控制AVAudioPlayerNode中的时间

import UIKit
import AVFoundation

class ViewController: UIViewController {
    var audioPlayerNode: AVAudioPlayerNode!
    var audioFile: AVAudioFile!
    var audioEngine: AVAudioEngine!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建AVAudioPlayerNode实例
        audioPlayerNode = AVAudioPlayerNode()
        
        // 创建UISlider实例
        let slider = UISlider(frame: CGRect(x: 50, y: 100, width: 200, height: 20))
        slider.minimumValue = 0
        slider.maximumValue = Float(audioFile.length)
        slider.value = 0
        slider.addTarget(self, action: #selector(sliderValueChanged(_:)), for: .valueChanged)
        view.addSubview(slider)
    }
    
    @objc func sliderValueChanged(_ slider: UISlider) {
        // 获取UISlider的值，并转换为音频文件的时间
        let time = Double(slider.value)
        
        // 将音频文件的播放时间设置为转换后的时间
        audioPlayerNode.stop()
        audioPlayerNode.scheduleSegment(audioFile, startingFrame: AVAudioFramePosition(time), frameCount: AVAudioFrameCount(audioFile.length), at: nil)
        audioPlayerNode.play()
    }
}