public async Task LoadImageAndDetailTask()
{
var loadingsb = this.Sb("LoadingSb");
loadingsb.Begin();
this.Sb("LoadingStartSb").Begin();
// 同时进行图片加载和详情页分析
var imgTask = LoadImageAsync();
Task detailTask = null;
if (ImageItem.GetDetailTaskFunc != null)
{
detailTask = ImageItem.TryGetDetail();
}
// 等待图片加载和详情页分析完成
var e = await imgTask;
if (detailTask != null)
{
await detailTask;
}
var loadedsb = this.Sb("LoadedAllSb");
loadedsb.Completed += (sender, args) =>
{
loadingsb.Stop();
};
loadedsb.Begin();
// Load end
if (e == null)
{
RefreshButton.Visibility = Visibility.Collapsed;
}
ImageLoadEnd?.Invoke(this);
}
public async Task LoadImageAsync()
{
var loadingsb = this.Sb("LoadingSb");
loadingsb.Begin();
this.Sb("LoadingStartSb").Begin();
// client
var net = ImageItem.Net ?? new NetSwap(Settings);
net.SetTimeOut(15);
net.SetReferer(ImageItem.ThumbnailUrlInfo.Referer);
Exception loadex = null;
try
{
var cts = new CancellationTokenSource(TimeSpan.FromSeconds(15));
var getDetailTask = ImageItem.GetDetailAsync();
var response = await net.Client.GetAsync(ImageItem.ThumbnailUrlInfo.Url, cts.Token);
var stream = await response.Content.ReadAsStreamAsync();
var source = await Task.Run(() =>
{
try
{
var bitm = new BitmapImage
{
CacheOption = BitmapCacheOption.OnLoad,
CreateOptions = BitmapCreateOptions.IgnoreImageCache
};
bitm.BeginInit();
bitm.StreamSource = stream;
bitm.EndInit();
bitm.Freeze();
stream.Dispose();
return(bitm);
}
catch (Exception ex)
{
App.Log(ex);
return(null);
}
}, cts.Token);
if (source == null)
{
loadex = new Exception("image source is null");
}
else
{
PreviewImage.Source = source;
}
await getDetailTask;
}
catch (Exception ex)
{
loadex = ex;
}
if (loadex == null)
{
var loadSb = this.Sb("LoadedSb");
loadSb.Completed += (sender, args) => loadingsb.Stop();
loadSb.Begin();
RefreshButton.Visibility = Visibility.Collapsed;
}
else
{
App.Log(loadex);
var loadfsb = this.Sb("LoadFailSb");
loadfsb.Completed += (sender, args) => loadingsb.Stop();
loadfsb.Begin();
App.Log($"{ImageItem.ThumbnailUrlInfo.Url} 图片加载失败");
}
// Loaded
ImageLoadEnd?.Invoke(this);
}