void OnDownload(System.Object obj)
{
DownloadTips tips = (DownloadTips)obj;
if (tips.progress == 0)
{
LoadingScene.instance.StartProgress(1, 0f, tips.tips);
}
else
{
LoadingScene.instance.SetEndValue(tips.progress, tips.tips + " " + tips.speed);
}
}
void OnDownloadConfig(string versionValue)
{
string fileName = versionValue + ".zip";
string url = GameConfig.HOST_RES_ZIP() + "zip/" + fileName + "?t=" + TimeUtils.CurLocalTimeMilliSecond();
string filePath = PathUtils.MakeFilePath(fileName, PathUtils.PathType.MobileDiskWrite);
float progress = 0f;
//使用流操作文件
FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
//获取文件现在的长度
long fileLength = fs.Length;
//获取下载文件的总长度
//long totalLength = GetLength(url);
HttpWebRequest request = HttpWebRequest.Create(url) as HttpWebRequest;
request.Timeout = 60000;
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
long totalLength = response.ContentLength;
string size = (totalLength / 1048576f).ToString("0.00") + "MB";
string tips = "下载更新包：0/" + size;
DownloadTips dt = new DownloadTips()
{
tips = tips
};
MessageSystem.Instance().PostMessage(MessageId.DOWNLOAD_CONFIG_PROGRESS, dt, 0);
DateTime startTime = DateTime.Now;
//如果没下载完
if (fileLength < totalLength)
{
//断点续传核心，设置本地文件流的起始位置
fs.Seek(fileLength, SeekOrigin.Begin);
//断点续传核心，设置远程访问文件流的起始位置
request.AddRange((int)fileLength);
Stream stream = response.GetResponseStream();
byte[] buffer = new byte[1024];
//使用流读取内容到buffer中
//注意方法返回值代表读取的实际长度,并不是buffer有多大，stream就会读进去多少
int length = stream.Read(buffer, 0, buffer.Length);
while (length > 0)
{
//将内容再写入本地文件中
fs.Write(buffer, 0, length);
//计算进度
fileLength += length;
progress = (float)fileLength / (float)totalLength;
dt.tips = "下载更新包：" + (fileLength / 1048576f).ToString("0.00") + "/" + size;
dt.progress = progress;
dt.speed = "速度：" + (int)(fileLength / 1024f / (DateTime.Now - startTime).TotalSeconds) + "KB/s";
MessageSystem.Instance().PostMessage(MessageId.DOWNLOAD_CONFIG_PROGRESS, dt, 0);
//类似尾递归
length = stream.Read(buffer, 0, buffer.Length);
}
stream.Close();
stream.Dispose();
}
else
{
progress = 1;
}
fs.Close();
fs.Dispose();
//如果下载完毕，执行回调
if (progress == 1)
{
OnDecompressConfig(versionValue);
}
}