// 下载资源列表文件
public async void DownloadResListFile()
{
using (UnityWebRequest webRequest = new UnityWebRequest($"{PathUtility.Instance.GetResListFileUrl()}/{m_ResListFileName}"))
{
await webRequest.SendWebRequest();
if (webRequest.isDone && !webRequest.isNetworkError)
{
ResListInfo onlineResListInfo = ResListInfo.Descriptor.Parser.ParseFrom(webRequest.downloadHandler.data) as ResListInfo;
List <SingleResInfo> updateList = new List <SingleResInfo>(onlineResListInfo.Info.Count); // 预先设置容量
FileStream fs = new FileStream(PathUtility.Instance.GetResListFilePath(), FileMode.Open, FileAccess.ReadWrite, FileShare.ReadWrite);
if (File.Exists(PathUtility.Instance.GetResListFilePath())) // 之前更新过小版本
{
int count = (int)fs.Length;
byte[] fileData = new byte[count];
fs.Read(fileData, 0, count);
ResListInfo curResListInfo = ResListInfo.Descriptor.Parser.ParseFrom(fileData) as ResListInfo;
GetUpdateResPaths(onlineResListInfo, curResListInfo, ref updateList);
}
else // 第一次更新小版本
{
GetUpdateResPaths(onlineResListInfo, null, ref updateList);
}
ModifyLocalResFile(updateList, () => {
byte[] onlineData = onlineResListInfo.ToByteArray();
fs.Write(onlineData, 0, onlineData.Length);
fs.Seek(0, SeekOrigin.Begin);
fs.Close();
fs.Dispose();
});
}
else
{
DebugUtility.Instance.Error("请求资源列表文件失败，失败原因为: " + webRequest.error);
}
}
}
