//Zkratka pro vyvolání údalosti při chybě
private void CallError(string message)
{
State = States.Error;
operation.Post(new SendOrPostCallback(delegate(object state)
{
OnDownloadError?.Invoke(this, message);
}), null);
}
private void NetworkStateChanged(Object sender, ConnectivityChangedEventArgs e)
{
OnDownloadError.Invoke(this, e);
if (!_webClient.IsBusy && e.NetworkAccess == Xamarin.Essentials.NetworkAccess.Internet)
{
_webClient.DownloadFileAsync(new Uri(url), pathToNewFile);
}
}
private void ProcessEvent()
{
if (m_Event.Count > 0)
{
DownloadEvent de = m_Event.Pop();
m_Event.Clear();
switch (de)
{
case DownloadEvent.Downloaded:
{
SavaFileFromMemory();
}
break;
case DownloadEvent.Begin:
break;
case DownloadEvent.DownloadOrExit:
break;
case DownloadEvent.Error:
OnDownloadError eL = m_OnError;
m_IsDownloading = false;
Clear();
if (eL != null)
{
eL(m_EventMsg);
eL = null;
}
break;
case DownloadEvent.Finish:
OnDownloadFinished fL = m_OnFinished;
Clear();
if (fL != null)
{
fL(m_SaveFile, 0, 0);
}
break;
case DownloadEvent.Progress:
break;
default:
break;
}
}
}
public bool AddDownloadTask(string uri, string localPath, int fileSize, OnDownloadProgress onProgress, OnDownloadError onError, OnDownloadFinished onFinshed, OnDownloadBegin onBegin, OnDownloadValidCheck validChecker, bool logError)
{
if (m_IsDownloading)
{
Log.e("HttpDownloaderMgr is busy!");
return(false);
}
if (string.IsNullOrEmpty(uri) == true)
{
Log.e("uri is empty");
return(false);
}
if (string.IsNullOrEmpty(localPath) == true)
{
Log.e("LocalPath is empty");
return(false);
}
if (onError == null || onFinshed == null)
{
Log.e("onError & onFinshed should not be null!");
return(false);
}
Clear();
m_LogError = logError;
m_FileSize = fileSize;
m_OnProgress = onProgress;
m_OnError = onError;
m_OnFinished = onFinshed;
m_OnDownloadBegin = onBegin;
m_OnValidCheck = validChecker;
m_Uri = uri;
m_SaveFile = localPath;
m_IsDownloading = true;
m_PreSize = 0;
m_LastChangeTime = currentTimeTick;
StartCoroutine(StartIEnumeratorTask());
return(true);
}
// 添加下载任务，目前只支持一个任务同时进行
public bool AddDownloadTask(string uri, string localPath, OnDownloadProgress onProgress, OnDownloadError onError, OnDownloadFinished onFinshed, OnDownloadBegin onBegin = null)
{
if (m_IsDownloading)
{
Log.e("HttpDownloaderMgr is busy!");
return(false);
}
if (string.IsNullOrEmpty(uri) == true)
{
Log.e("uri is empty");
return(false);
}
if (string.IsNullOrEmpty(localPath) == true)
{
Log.e("LocalPath is empty");
return(false);
}
if (onError == null || onFinshed == null)
{
Log.e("onError & onFinshed should not be null!");
return(false);
}
m_OnProgress = onProgress;
m_OnError = onError;
m_OnFinished = onFinshed;
m_OnDownloadBegin = onBegin;
m_Uri = uri;
m_SaveFile = localPath;
m_TaskCount++;
//Log.i("[HttpDownload]about to download new data:" + m_Uri);
return(true);
}
public void Clear()
{
if (m_IsDownloading)
{
return;
}
if (m_WWW != null)
{
m_WWW.Dispose();
m_WWW = null;
}
m_PreSize = 0;
m_LastChangeTime = currentTimeTick;
m_Event.Clear();
m_OnProgress = null;
m_OnError = null;
m_OnFinished = null;
m_OnDownloadBegin = null;
m_OnValidCheck = null;
//StopAllCoroutines();
}
/// <summary>
/// 根据解析出来的模型进行下载
/// </summary>
/// <param name="basicModel"></param>
/// <returns></returns>
public async Task <bool> DownloadAsync(BasicMusicInfoModel basicModel)
{
return(await Task.Run(async() =>
{
var obj = (QqMusicInfoModel)basicModel;
try
{
OnBeforeDownload?.Invoke($"{basicModel.SongName}_{basicModel.SingerName}");
var vkeyInfo = await GetVkeyInfo(obj.SongId, obj.MediaMid);
var url = new Uri(string.Format(_downloadUrl, obj.MediaMid, vkeyInfo.data.items[0].vkey));
var saveName = $"{obj.SongName}_{obj.SingerName}";
await _requests.SaveFileAsync(url, $"{saveName}.m4a");
OnAfterDownload?.Invoke($"{basicModel.SongName}_{basicModel.SingerName}");
return true;
}
catch (Exception e)
{
OnDownloadError?.Invoke(e, $"{basicModel.SongName}_{basicModel.SingerName}");
return false;
}
}));
}
private void OnError(ResultCode code)
{
OnDownloadError?.Invoke(code);
}