/// <summary>
/// 下载结束后重新尝试下载失败的图片（异步）
/// </summary>
/// <returns>Task</returns>
public static async Task ReTryAsync()
{
Debug.WriteLine("成功：" + "开始Retry");
List <ImageModel> failsList = new List <ImageModel>();
DownloadFailImages.ForEach(img => failsList.Add(img));
DownloadFailImages.Clear();
DelegateCommands.SetImageDownloadFailCountCommand?.Invoke(DownloadFailImages.Count());
await downloadImagesParallel(failsList);
if (UnAvailablePages.Count != 0)
{
List <ImagePageModel> failImagePages = new List <ImagePageModel>();
UnAvailablePages.ForEach(page => failImagePages.Add(page));
UnAvailablePages.Clear();
DelegateCommands.SetUnavailableImagePageCountCommand?.Invoke(UnAvailablePages.Count());
List <ImageModel> imageModels = await getAllImageUrls(failImagePages);
await downloadImagesParallel(imageModels);
}
SoundPlayer.PlayCompleteness();
new Window_FinishResult().Show();
}
public static async Task StartDownload(ObservableCollection <TaskItem> taskItems)
{
DownloadFailImages.Clear();
DownloadFinishImages.Clear();
UnAvailablePages.Clear();
for (int i = 0; i < taskItems.Count; i++)
{
await downloadATask(taskItems[i]);
}
SoundPlayer.PlayCompleteness();
new Window_FinishResult().Show();
}