public IEnumerator Load(MonoBehaviour mb)
{
_index.Clear();
AssetIndexFile indexP = new AssetIndexFile();
yield return(mb.StartCoroutine(LoadImpl(GameConfig.DATA_URL + "media/file.list", AssetInfo.STORAGE_STREAMING, _index)));
yield return(mb.StartCoroutine(LoadImpl(GameConfig.PERSISTENT_URL + "media/file.list", AssetInfo.STORAGE_PERSISTEN, indexP)));
// 流数据文件版本更高,例如直接安装了app新版本
if (indexP.GetVersion() == 0 || _index.GetVersion() > indexP.GetVersion())
{
yield break;
}
// 逐个比较文件索引,判定使用哪个文件
_index.SetVersion(indexP.GetVersion());
foreach (var asset in indexP.FetchAll())
{
if (asset == null)
{
continue;
}
// 文件不存在或有差异则用PERSISTEN的条目覆盖
AssetInfo old = _index.GetAssetInfo(asset.hash);
if (old == null || old.IsDiff(asset))
{
_index.AddAssetInfo(asset);
}
}
}
private IEnumerator LoadImpl(string url, short storage, AssetIndexFile index)
{
index.Clear();
WWW downloader = new WWW(url);
yield return(downloader);
if (downloader.error != null)
{
yield break;
}
try
{
index.Load(new MemoryStream(downloader.bytes), storage);
}
catch (Exception e)
{
index.Clear();
Log.Warning("AssetIndexData.LoadImpl(" + url + ") " + e.Message);
}
}