/// <summary>
/// 下载文件
/// </summary>
/// <param name="url"></param>
/// <param name="type"></param>
/// <param name="callback"></param>
/// <param name="cachePath">缓存到本地的相对目录，如果为null则不缓存</param>
/// <param name="retry"></param>
public static void Download(string url, FileDownloadType type, FileDownloadCallback callback, string cachePath = null, int retry = 0)
{
if (downloader == null)
{
downloader = new FileDownloader();
Updater.Instance.OnPreUpdate.Add(downloader.OnUpdate);
Updater.Instance.OnPostDestroy.Add(downloader.OnDestroy);
}
FileDownloadContext ctx = new FileDownloadContext();
ctx.url = url;
ctx.type = type;
ctx.callback = callback;
ctx.retry = retry;
ctx.cachePath = cachePath;
if (downloader.CheckCache(ctx))
{
if (ctx.callback != null)
{
ctx.callback(ctx);
}
return;
}
downloader.sendQueue.Enqueue(ctx);
}