GHZMRNavigatorProXR/Assets/2.0/Tools/DownLoadItem.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEngine;
using UnityEngine.Networking;

public class DownLoadItem : MonoBehaviour
{
    public delegate void DownLoadCallBack(bool b);
    public delegate void DownLoadPressOn(float f);

    //下载回调
    public DownLoadCallBack callback;
    //下载进度回调
    public DownLoadPressOn onProgress;

    //下载ID
    public string id;

    /// <summary>
    ///  下载地址
    /// </summary>
    public string downLoadPath;
    /// <summary>
    /// 是否下载成功
    /// </summary>
    public bool isDownLoad;
    /// <summary>
    /// 下载成功后的文件
    /// </summary>
    public byte[] downLoadData;
    /// <summary>
    /// 进度条
    /// </summary>
    public float progress;
    /// <summary>
    /// 下载后状态
    /// </summary>
    public string downLoadState;

    //下载后是否有处理
    public bool isAction;

    private UnityWebRequest webRequest;

    public void Init(string downLoadPath,string id)
    {
        this.downLoadPath = downLoadPath;
        this.id = id;
        LoadManager.Instance.downloadQueueList.Enqueue(this);
    }

    public System.Collections.IEnumerator DownloadFile()
    {
        string url = HttpAction.baseurl + HttpAction.file_download;
        if (UserInfo.Instance.is20)
        {
            url = HttpAction.baseurl + HttpAction.file_download;
        }
        using (UnityWebRequest webRequest = new UnityWebRequest(url, "POST"))
        {
            byte[] bodyRaw = Encoding.UTF8.GetBytes(downLoadPath);
            webRequest.uploadHandler = (UploadHandler)new UploadHandlerRaw(bodyRaw);
            webRequest.SetRequestHeader("authorization", UserInfo.Instance.Token);
            webRequest.SendWebRequest();

            while (!webRequest.isDone)
            {
                // 此处可以显示下载进度条等UI操作
                progress = webRequest.downloadProgress;
                onProgress?.Invoke(progress);
                // Debug.Log("Download Progress: " + progress);
                yield return null;
            }

            if (webRequest.result == UnityWebRequest.Result.ConnectionError || webRequest.result == UnityWebRequest.Result.ProtocolError)
            {
                Debug.LogError("Download Failed: " + webRequest.error);
                // 下载失败 
                downLoadState = webRequest.error;
                isDownLoad = false;              
            }
            else
            {
                downLoadState = "下载成功";
                downLoadData = webRequest.downloadHandler.data;
                isDownLoad = true;
            }
            callback?.Invoke(isDownLoad);
        }
    }

    private void OnDestroy()
    {
        // 断开下载连接
        if (webRequest != null && !webRequest.isDone)
        {
            webRequest.Abort();
        }
    }

}