public void StartDownload()
{
LoggerManager.Instance.Info(fileInfo.ToString());
downloadTimeCounter++;
if (downloadTimeCounter <= MAX_DOWNLOAD_COUNT && www == null) //加上www == null判断，防止重复下载
{
www = new WWWRequestChecker(fileInfo.URL);
}
}
/// <summary>
/// 这个方法主要是想暴露给外部知道当前的下载进度。类内部通过Update()调用，捕获www的状态然后相应的保存或者其他的操作
/// </summary>
/// <returns></returns>
public DownloadStatus GetDownloadStatus()
{
if (downloadTimeCounter > MAX_DOWNLOAD_COUNT)
{
return(DownloadStatus.COMPLETEFAILED);
}
if (www.IsDone())
{
if (www.IsError == false)
{
if (fileInfo.NeedCompress)
{
string path = FileManager.GetPersistentDataPath(fileInfo.SavePath);
string fullPath = string.Empty;
if (path.EndsWith("/"))
{
fullPath = path + fileInfo.FileName;
}
else
{
fullPath = path + "/" + fileInfo.FileName;
}
if (ZipTool.Decompress(www.GetWWW().bytes, fullPath, false) == false) //如果解压失败
{
Debug.LogError(fileInfo.URL + " download failed, trying download again. downloadTimeCounter : " + downloadTimeCounter + "\n " + www.GetWWW().error);
www = null;
StartDownload();
return(DownloadStatus.FAILED);
}
}
else
{
SaveByteToFile();
}
return(DownloadStatus.DOWNLOADED);
}
else
{
Debug.LogError(fileInfo.URL + " download failed, trying download again. downloadTimeCounter : " + downloadTimeCounter + "\n " + www.GetWWW().error);
www = null; //类内部调用StartDownload方法要确保每次都是新开辟的www
StartDownload();
return(DownloadStatus.FAILED);
}
}
else
{
return(DownloadStatus.DOWNLOADING);
}
}
} //只有文件保存好了以后，才会标识下载成功，否则什么情况都有可能发生，不能保证下载成功
private void SaveByteToFile()
{
string path = FileManager.GetPersistentDataPath(fileInfo.SavePath);
string fullPath = string.Empty;
if (path.EndsWith("/"))
{
fullPath = path + fileInfo.FileName;
}
else
{
fullPath = path + "/" + fileInfo.FileName;
}
if (Directory.Exists(path) == false)
{
Directory.CreateDirectory(path);
}
//处理文件这很容易出现问题，所以用下try捕捉下错误
try
{
ClientCommon.ConfigDataBase.Instance.DbAccessorFactory.ReleaseAll();
ClientCommon.ConfigDataBase.Instance.ReleaseAll(true);
Stream stream = File.Create(fullPath);
stream.Write(www.GetWWW().bytes, 0, www.GetWWW().bytes.Length);
stream.Close();
www.Dispose(); //下载成功，释放内存
if (DownloadEndCallback != null)
{
DownloadEndCallback(fileInfo.URL);
}
downloadSuccess = true;
}
catch (Exception e)
{
Debug.LogError("Save file error occured :" + e.ToString() + "\n trying download again. " + downloadTimeCounter);
www = null;
StartDownload();
}
}
/// <summary>
///
/// </summary>
/// <param name="subPath">包内文件的相对路径, 后边不带'/', 可以是""</param>
/// <param name="existMarkFile">检查这个文件, 如果不存在，则说明没解压过, 必须解压</param>
/// <param name="needCheckFileVersion">true: 表示在文件存在的前提下, 还要检查文件里的版本号是比较旧</param>
/// <param name="filePathList">需要解压的文件名列表, 可以包含路径, 前后没有'/'</param>
/// <param name="compress">是否需要解压</param>
/// <param name="onFinishDelegate">完成时的回调</param>
/// <returns></returns>
public static IEnumerator ConstructLocalConfigDbFile(string subPath, string existMarkFile, bool needCheckFileVersion, List <string> filePathList, bool compress, Action <bool> onFinishDelegate, MonoBehaviour coroutineMb)
{
bool needCache = false;
long newVersion = 0;
if (needCheckFileVersion)
{
long oldVersion = long.MinValue;
string markFilePath = PathUtility.GetLocalUrl4WWW(FileManager.GetStreamingAssetsPath(subPath)) + Path.AltDirectorySeparatorChar + existMarkFile;
WWW loader = new WWW(markFilePath);
yield return(loader);
try
{
newVersion = long.Parse(loader.text);
}
catch (Exception e)
{
Debug.LogError(e.StackTrace);
}
markFilePath = FileManager.GetPersistentDataPath(subPath) + Path.AltDirectorySeparatorChar + existMarkFile;
if (File.Exists(markFilePath))
{
loader = new WWW(PathUtility.GetLocalUrl4WWW(markFilePath));
yield return(loader);
try
{
oldVersion = long.Parse(loader.text);
}
catch (Exception e)
{
Debug.LogError(e.Message);
}
}
else
{
PathUtility.CreateDirectory(Path.GetDirectoryName(markFilePath));
WriteFile(markFilePath, oldVersion.ToString());
}
if (newVersion > oldVersion || newVersion == 0) // 如果是0的话每次都拷贝
{
needCache = true;
}
}
else
{
string checkPath = FileManager.GetPersistentDataPath(subPath) + Path.AltDirectorySeparatorChar + existMarkFile;
needCache = !File.Exists(checkPath);
}
bool copyAllFileSuccess = true;
int copyFileCount = 0;
if (needCache)
{
foreach (var filePath in filePathList)
{
string persistentFilePath = FileManager.GetPersistentDataPath(subPath + Path.AltDirectorySeparatorChar + filePath);
string streamingFilePath = FileManager.GetStreamingAssetsPath(subPath + Path.AltDirectorySeparatorChar + filePath);
/// <summary>
/// warning!!!!!
/// 为什么这么写
/// 似乎是ios上独有的问题，如果yield return www的话，如果www请求了一个不存在的地址（或者出错?)
/// 那么www会一直等待，永远不会执行到下一句
/// 所以在外边套了一层wwwChecker
/// coroutineMono 也是为了能开启这个协程
/// </summary>
WWW www = new WWW(PathUtility.GetLocalUrl4WWW(streamingFilePath));
WWWRequestChecker wwwChecker = new WWWRequestChecker(www);
yield return(coroutineMb.StartCoroutine(wwwChecker));
if (wwwChecker.IsError)
{
copyAllFileSuccess = false;
continue;
}
byte[] fileBytes = www.bytes;
if (compress)
{
}
else
{
PathUtility.CreateDirectory(Path.GetDirectoryName(persistentFilePath));
try
{
FileStream fs = File.Create(persistentFilePath);
fs.Write(fileBytes, 0, fileBytes.Length);
fs.Flush();
fs.Close();
}
catch (Exception e)
{
copyAllFileSuccess = false;
Debug.LogError(e);
}
}
wwwChecker.Dispose();
copyFileCount++;
}
bool executeSuccess = copyAllFileSuccess && (copyFileCount == filePathList.Count);
if (executeSuccess)
{
string persistentMarkFilePath = FileManager.GetPersistentDataPath(subPath) + Path.AltDirectorySeparatorChar + existMarkFile;
PathUtility.CreateDirectory(Path.GetDirectoryName(persistentMarkFilePath));
try
{
WriteFile(persistentMarkFilePath, newVersion.ToString());
}
catch (Exception e)
{
Debug.LogError(e);
bool reTryCountSuccess = false;
for (int i = 0; i < 3; i++)
{
Thread.Sleep(5 + 5 * i);
try
{
WriteFile(persistentMarkFilePath, newVersion.ToString());
reTryCountSuccess = true;
break;
}
catch (Exception ex)
{
Debug.LogException(ex);
}
}
if (!reTryCountSuccess)
{
copyAllFileSuccess = false;
}
}
if (!copyAllFileSuccess)
{
Debug.LogError("Execute file copy not success.");
}
}
else
{
Debug.LogError("Execute file copy not success.");
}
}
else
{
Debug.LogWarning("Version checked pass, not copy file from " + FileManager.GetStreamingAssetsPath(subPath) + " to " + FileManager.GetPersistentDataPath(subPath));
}
if (onFinishDelegate != null)
{
onFinishDelegate(copyAllFileSuccess);
}
yield return(null);
}
