/////////////////////////////////////
private AssetDownloadTask GetOrCreateTask()
{
var task = new AssetDownloadTask(this);
task.id = m_taskId++;
return(task);
}
private void DownloadFiles(int packageIndex, string[] urlPaths, string[] savePaths)
{
if (urlPaths == null)
{
return;
}
if (urlPaths.Length <= 0)
{
return;
}
if (_downloadRetryTimes >= maxRetryTimes) //重试次数大于n次,判断为更新失败
{
return;
}
var downloader = AssetDownloadManager.GetInstance().GetForegroundCentral();
_downloadTask = downloader.NewTask(urlPaths, savePaths);
_downloadTask.onCompleted = (task) =>
{
onDownloadCompleted?.Invoke(task);
var package = _updateList.GetPackage(packageIndex);
OnDownloadCompleted(package);
};
}
private void DestroyTask(AssetDownloadTask task)
{
if (task == null)
{
return;
}
task.StopByManager(this);
}
///
//激活任务,正式开始下载
private void ActiveTask(AssetDownloadTask task)
{
if (task == null)
{
return;
}
task.StartByManager(this);
}
public void ResumeTask(AssetDownloadTask task)
{
if ((m_pauseMap != null && m_pauseMap.Contains(task)))
{
EnabledTask(task, true);
GetPauseMap().Remove(task);
GetQueueMap().Remove(task);
GetProcressMap().Add(task);
}
}
public void PauseTask(AssetDownloadTask task)
{
if ((m_progressMap != null && m_progressMap.Contains(task)) || (m_queueMap != null && m_queueMap.Contains(task)))
{
EnabledTask(task, false);
GetProcressMap().Remove(task);
GetQueueMap().Remove(task);
GetPauseMap().Add(task);
}
}
//失活任务,停止下载
private void EnabledTask(AssetDownloadTask task, bool isEnabled)
{
if (task == null)
{
return;
}
if (isEnabled)
{
task.ResumeByManager(this);
}
else
{
task.PauseByManager(this);
}
}
public void StartTask(AssetDownloadTask task)
{
if (m_queueMap != null && m_queueMap.Contains(task))
{
//如果本来就在排队,提高优先级
m_queueMap.Remove(task);
task.priority++;
m_queueMap.Add(task);
}
else if (m_pauseMap != null && m_pauseMap.Contains(task))
{
//从暂停队列移到排队队列
GetPauseMap().Remove(task);
GetQueueMap().Add(task);
task.status = AssetDownloadStatus.DOWNLOAD_QUEUE;
}
}
/////////////////////////////////////
private void UpdateWait()
{
while (WaitingCount > 0 && (maxCount > 0 && DownloadingCount < maxCount))
{
AssetDownloadTask task = null;
foreach (var item in m_queueMap)
{
task = item;
break;
}
m_queueMap.Remove(task);
ActiveTask(task);
GetProcressMap().Add(task);
task.status = AssetDownloadStatus.DOWNLOAD_DOWNLOADING;
}
}
public void StopTask(AssetDownloadTask task)
{
if (m_queueMap != null)
{
m_queueMap.Remove(task);
}
if (m_pauseMap != null)
{
m_pauseMap.Remove(task);
}
if (m_progressMap != null)
{
m_progressMap.Remove(task);
}
if (m_tasksMap != null)
{
var taskKey = GetTaskKey(task.urlPaths);
if (GetTaskMap().ContainsKey(taskKey))
{
GetReleaseList().AddLast(task);
}
}
}
protected void OnDownloadFailed(AssetDownloadTask task)
{
//移除无效的临时文件
}
//Android目录下,下载中的存放路径必须在Application.dataPath,下载完成在拷贝到Application.persistentDataPath
protected void OnDownloadSuccess(AssetDownloadTask task)
{
//将临时文件移动到持久目录
}
public bool HadTask(AssetDownloadTask task)
{
return(HadTask(task.urlPaths));
}