/// <summary>
/// 下载保存ab文件
/// </summary>
/// <param name="url"></param>
/// <param name="downFileList"></param>
/// <returns></returns>
private IEnumerator DownUpdataFile(string url, string localPath, List <AssetBundleManifestData> downFileList)
{
for (int i = 0; i < downFileList.Count; i++)
{
AssetBundleManifestData data = downFileList[i];
UnityWebRequest request = UnityWebRequest.Get(url + data.fileName);
yield return(request.SendWebRequest());
if (request.isHttpError || request.isNetworkError)
{
Debug.LogError(request.downloadHandler.text);
Debug.LogError("下载AB文件时报错：" + data.fileName);
}
else
{
AssetBunildFileIO.SaveAssetBuildFile(localPath, data.fileName, request.downloadHandler.data);
AssetBunildFileIO.SaveAssetBuildFile(localPath, data.manifestName, data.ToString());
}
request.Dispose();
}
}
public IEnumerator Init()
{
Dictionary <string, AssetBundleManifestData> webList = null;
Dictionary <string, AssetBundleManifestData> localList = null;
AssetBundleManifestData webMainManifest = null;
AssetBundleManifestData localMainManifest = null;
Config.Init(target, url);
//获取本地和服务器的MainManifest清单
yield return(StartCoroutine(DownMainManifestFile(Config.WebFileMainManifest(), Config.MainManifestFileName(), (d) =>
{
webMainManifest = d;
})));
yield return(StartCoroutine(DownMainManifestFile(Config.LocalFileMainManifestUnityWebRequest(), Config.MainManifestFileName(), (d) =>
{
localMainManifest = d;
})));
//网上无MainManifest清单则退出下载程序
if (webMainManifest.isNO)
{
Debug.LogError("网上无AB包!!!");
yield break;
}
//本地无MainManifest清单则创建
if (!localMainManifest.isNO)
{
if (webMainManifest.CRC == localMainManifest.CRC)
{
Debug.Log("本地为最新AB包,无需下载");
yield break;
}
}
//根据主MainManifest文件获取其他manifest清单
yield return(StartCoroutine(DownAllManifestFile(Config.WebPath(), webMainManifest.abList.Keys.ToList(), (d) =>
{
webList = d;
})));
yield return
(StartCoroutine(DownAllManifestFile(Config.LocalFileManifestUnityWebRequest(), localMainManifest.abList.Keys.ToList(),
(d) =>
{
localList = d;
})));
///检验获取下载项
//获取需要下载的列表
List <AssetBundleManifestData> downList = new List <AssetBundleManifestData>();
List <string> keys = webList.Keys.ToList();
for (int i = 0; i < keys.Count; i++)
{
string key = keys[i];
if (webList[key].isNO)
{
Debug.LogError("服务器上文件出现问题：" + key);
continue;
}
if (localList.ContainsKey(key))
{
if (webList[key].CRC != localList[key].CRC)
{
downList.Add(webList[key]);
}
localList.Remove(key);
}
else
{
downList.Add(webList[key]);
}
}
//根据下载清单 下载并保存清单文件与ab文件
yield return(StartCoroutine(DownUpdataFile(Config.WebPath(), Config.LocalPath(), downList)));
//下载文件
//获取且删除本地无用文件
List <AssetBundleManifestData> deleteList = localList.Values.ToList();
for (int i = 0; i < deleteList.Count; i++)
{
if (!deleteList[i].isNO)
{
AssetBunildFileIO.DeleteABManifest(Config.LocalPath(), deleteList[i].fileName);
}
}
//覆盖本地主清单文件,表示下载完成
AssetBunildFileIO.SaveAssetBuildFile(Config.LocalPath(), Config.MainManifestFileName(),
webMainManifest.ToString());
Debug.Log("下载完成");
}