public async void Init()
{
// 确保至少能正确执行一次，能正常设置背景。
while (true)
{
try
{
ImageArchiveCollection imageArchiveCollection = await _bingWallpaperService.GetWallpaperInformationsAsync(0, 1, Settings.Area);
if (imageArchiveCollection != null)
{
ImageArchive imageArchive = imageArchiveCollection.Images.FirstOrDefault();
if (imageArchive != null)
{
// 设置背景。
BackgroundUrl = imageArchive.GetUrlWithSize(WallpaperSize._1920x1080);
// 立即更新主磁贴。
TileHelper.UpdateTile(imageArchive);
}
}
break;
}
catch (HttpRequestException ex)
{
if (_hadNotifyNetworkError == false)
{
_hadNotifyNetworkError = true;
SideToastHelper.Error(ResourcesHelper.NetworkError);
}
}
}
}
protected override async Task <IEnumerable <ImageArchive> > LoadMoreItems(CancellationToken c, int count)
{
try
{
ImageArchiveCollection imageArchiveCollection = await _bingWallpaperService.GetWallpaperInformationsAsync(this.Count, count, Settings.Area);
if (imageArchiveCollection == null)
{
_isEnd = true;
return(null);
}
else
{
return(imageArchiveCollection.Images);
}
}
catch
{
return(Enumerable.Empty <ImageArchive>());
}
}
public async static Task LoadMore(int count)
{
if (_loading)
{
return;
}
ImageArchiveCollection imageArchiveCollection =
await
BingWallpaperService.GetWallpaperInformationsAsync(LoadedImageArchives.Count, count,
CultureInfo.CurrentCulture.Name);
if (imageArchiveCollection != null)
{
ImageArchive[] imageArchives = imageArchiveCollection.Images;
foreach (var imageArchive in imageArchives)
{
if (LoadedImageArchives.Any(temp => temp.UrlBase == imageArchive.UrlBase) == false)
{
LoadedImageArchives.Add(imageArchive);
}
}
}
_loading = false;
}
