public void CheckNeedUpdate()
{
//从资源服务器下载，资源列表
_resourceLoader.LoadRemoteAsset(Path.Combine(Application.platform.ToString(), assetsListName), "", (data) =>
{
string jsonStr = System.Text.Encoding.UTF8.GetString(data);
HotUpdateAssetsList serverAssetsList = JsonUtility.FromJson <HotUpdateAssetsList>(jsonStr);
//读取本地资源维护表
string localAssetOutAppFilePath = Path.Combine(Application.persistentDataPath, localAssetOutAppName);
if (File.Exists(localAssetOutAppFilePath))
{
localAssetOutAppList = JsonUtility.FromJson <HotUpdateAssetsList>(File.ReadAllText(localAssetOutAppFilePath));
}
else
{
localAssetOutAppList = new HotUpdateAssetsList();//记录本地已经热更新过得资源
}
//读取本地资源md5文件
string localListPath = "";
if (!File.Exists(Path.Combine(Application.persistentDataPath, assetsListName)))//应该是没更新过，本地资源列表还在app包内
{
// FileStream file = new FileStream(filePath, System.IO.FileMode.Open);
localListPath = UrlCombine.GetLocalUrl(assetsListName, true, Application.platform);
}
else
{
localListPath = UrlCombine.GetLocalUrl(assetsListName, false, Application.platform);
}
//加载本地表，加载完成后比较本地和服务器返回表
string localAssetListJsonStr = File.ReadAllText(localListPath);
HotUpdateAssetsList localAssetList = JsonUtility.FromJson <HotUpdateAssetsList>(localAssetListJsonStr);
List <HotUpdateAssetItem> needUpdateAssetList = CheckDifferent(localAssetList, serverAssetsList);
//加在更新资源
int loadedAssetCouint = 0;
for (int i = 0; i < needUpdateAssetList.Count; i++)
{
var assetInfo = needUpdateAssetList[i];
_resourceLoader.LoadRemoteAsset(assetInfo.assetPath, assetInfo.md5, (assetBytes) =>
{
loadedAssetCouint++;
UpdateOutAppAssetPath(assetInfo);
string assetPath = Path.Combine(Application.persistentDataPath, assetInfo.assetPath);
WriteFile(assetPath, assetBytes);
if (loadedAssetCouint == needUpdateAssetList.Count)
{
//全部资源更新完成,更新本地表格
string assetListJsonString = JsonUtility.ToJson(serverAssetsList);
WriteFile(Path.Combine(Application.persistentDataPath, assetsListName), assetListJsonString);
string assetOutAppJsonString = JsonUtility.ToJson(localAssetOutAppList);
WriteFile(localAssetOutAppFilePath, assetOutAppJsonString);
}
});
}
});
}
