calculator-android/Assets/scripts/AudioPlayer.cs

using System.Collections;
using UnityEngine;
using UnityEngine.UI;
using TMPro;

public class AudioPlayer : MonoBehaviour
{
    public TextMeshProUGUI timeText;
    public Slider progressBar;
    public Button playPauseButton;
    public Sprite playSprite;
    public Sprite pauseSprite;

    private AudioClip recordedClip;
    private AudioSource audioSource;
    private float currentTime;
    private bool isPlaying;
    private bool isDraggingProgress;

    private void Awake()
    {
        audioSource = GetComponent<AudioSource>();
    }
    public void LoadAudioClip(byte[] audioData)
    {
        Debug.Log(audioData.ToString());
        recordedClip = WavUtility.ToAudioClip(audioData);
        Debug.Log(recordedClip.ToString());
        audioSource.clip = recordedClip;
        playPauseButton.onClick.AddListener(TogglePlayPause);
        progressBar.onValueChanged.AddListener(OnProgressBarValueChanged);
        UpdateProgressBar();
        UpdateTimeText();
    }

    public void TogglePlayPause()
    {
        // 切换播放/暂停
        if (isPlaying)
        {
            audioSource.Pause();
            playPauseButton.image.sprite = playSprite;
            isPlaying = false;
        }
        else
        {
            audioSource.Play();
            playPauseButton.image.sprite = pauseSprite;
            isPlaying = true;
        }
    }

    private void Update()
    {
        if (isPlaying)
        {
            UpdateProgressBar();
            UpdateTimeText();

            // 如果音频播放完毕，则停止播放并将播放标志设置为 false
            if (!audioSource.isPlaying)
            {
                playPauseButton.image.sprite = playSprite;
                isPlaying = false;
                audioSource.time = 0;
                progressBar.value = 0;
                UpdateTimeText();
            }
        }
        else
        {
            if (audioSource.clip != null)
            {
                UpdateProgressBar();
                UpdateTimeText();
            }
        }
    }

    private void UpdateProgressBar()
    {
        // 更新进度条的值
        if (recordedClip != null && !isDraggingProgress)
        {
            progressBar.value = audioSource.time / recordedClip.length;
            UpdateTimeText();
        }
    }

    private void UpdateTimeText()
    {
        // 更新时间文字显示
        if (recordedClip != null)
        {
            currentTime = audioSource.time;
            timeText.text = FormatTime(currentTime) + " / " + FormatTime(recordedClip.length);
        }
    }

    public void OnProgressBarValueChanged(float value)
    {
        // 当进度条的值发生变化时（用户拖动），更新播放器的播放位置
        float newTime = progressBar.value * recordedClip.length;
        if (newTime < 0)
        {
            newTime = 0;
        }
        else if (newTime > recordedClip.length)
        {
            newTime = recordedClip.length;
        }
        audioSource.time = newTime;
    }

    public void OnPointerDownProgressBar()
    {
        // 当用户按下进度条时，设置拖动标志为 true
        isDraggingProgress = true;
    }

    public void OnPointerUpProgressBar()
    {
        // 当用户放开进度条时，设置拖动标志为 false
        isDraggingProgress = false;
    }

    private string FormatTime(float time)
    {
        // 格式化时间为分钟：秒
        int minutes = Mathf.FloorToInt(time / 60f);
        int seconds = Mathf.FloorToInt(time % 60f);
        return string.Format("{0:00}:{1:00}", minutes, seconds);
    }
}