//开始下载url2
public void StartDownload2()
{
string[] URLStr = url2.Split('/');
string FileName = URLStr[URLStr.Length - 1];
_DownloadHandler handler = DownlaodFile._Instance.StartDownload(url2, Application.dataPath + "/../" + FileName);
if (handler == null)
{
return;
}
handler.RegisteProgressBack(Progress2);
handler.RegisteReceiveTotalLengthBack(Total);
handler.RegisteCompleteBack(Complete);
}
public _DownloadHandler StartDownload(string url, string savePath)
{
if (listRequest.ContainsKey(url))
{
Debug.Log("下载列表已经存在路径 =>" + url);
return(null);
}
_DownloadHandler loadHandler = new _DownloadHandler(savePath);
UnityWebRequest request = UnityWebRequest.Get(url);
request.chunkedTransfer = true;
request.disposeDownloadHandlerOnDispose = true;
request.SetRequestHeader("Range", "bytes=" + loadHandler.DownedLength + "-");
request.downloadHandler = loadHandler;
request.Send();
listRequest.Add(url, request);
return(loadHandler);
}
public Dictionary <string, UnityWebRequest> listRequest = new Dictionary <string, UnityWebRequest>(); //下载请求的列表
/// <summary>
/// 开始下载资源
/// </summary>
/// <param name="url">资源的url</param>
/// <param name="savePath">下载后保存文件的绝对路径，包含文件名称和扩展名</param>
public _DownloadHandler StartDownload(string url, string savePath)
{
if (listRequest.ContainsKey(url))
{
Debug.Log("下载列表已经存在路径=>" + url);
//return listRequest[url].downloadHandler as _DownloadHandler;
return(null); //如果已经存在，则返回null
}
_DownloadHandler loadHandler = new _DownloadHandler(savePath);
UnityWebRequest request = UnityWebRequest.Get(url);
request.chunkedTransfer = true;
request.disposeDownloadHandlerOnDispose = true;
request.SetRequestHeader("Range", "bytes=" + loadHandler.DownedLength + "-"); //断点续传设置读取文件数据流开始索引，成功会返回206
request.downloadHandler = loadHandler;
//request.useHttpContinue = true; //默认就是true
request.Send(); //协程操作，可以在协程中调用等待
listRequest.Add(url, request); //保存下载的请求
return(loadHandler);
}
