private void Load()
{
var request = new TweetImageFetchRequest(tweetImageInfo, imageView, false);
fetchOp = AppDelegate.Current.ImagePipeline.CreateFetchOperation(request, null, this);
AppDelegate.Current.ImagePipeline.FetchImage(fetchOp);
}
public bool ImageFetchOperationShouldLoadProgressively(TIPImageFetchOperation op, string identifier, NSUrl url, string imageType, CGSize originalDimensions)
{
var isNull = false;
InvokeOnMainThread(() => isNull = (imageView.Image == null));
return(isNull);
}
public void ImageFetchOperationDidFailToLoadFinalImage(TIPImageFetchOperation op, NSError error)
{
Debug.WriteLine($"...failed zoom fetch: {error}");
progressView.TintColor = UIColor.Red;
fetchOp = null;
}
public void ImageFetchOperationDidLoadFirstAnimatedImageFrame(TIPImageFetchOperation op, ITIPImageFetchResult progressiveResult, float progress)
{
Debug.WriteLine($"...animated first frame ({progress:0.000})...");
imageView.Image = progressiveResult.ImageContainer.Image;
progressView.TintColor = UIColor.Purple;
progressView.SetProgress(progress, true);
}
public void ImageFetchOperationDidUpdateProgressiveImage(TIPImageFetchOperation op, ITIPImageFetchResult progressiveResult, float progress)
{
Debug.WriteLine($"...progressive update ({progress:0.000})...");
progressView.TintColor = UIColor.Orange;
progressView.SetProgress(progress, true);
imageView.Image = progressiveResult.ImageContainer.Image;
}
public void ImageFetchOperationDidLoadFinalImage(TIPImageFetchOperation op, ITIPImageFetchResult finalResult)
{
Debug.WriteLine("...completed zoom fetch");
progressView.TintColor = UIColor.Green;
progressView.SetProgress(1, true);
imageView.Image = finalResult.ImageContainer.Image;
fetchOp = null;
}
public void ImageFetchOperationDidLoadPreviewImage(TIPImageFetchOperation op, ITIPImageFetchResult previewResult, TIPImageFetchDidLoadPreviewCallback completion)
{
Debug.WriteLine("...preview loaded...");
progressView.TintColor = UIColor.Blue;
imageView.Image = previewResult.ImageContainer.Image;
completion(TIPImageFetchPreviewLoadedBehavior.ContinueLoading);
}
public override void DidFinishDownloadingImage(TIPImageFetchOperation op, NSUrl url, string type, nuint byteSize, CoreGraphics.CGSize dimensions, bool wasResumed)
{
AppDelegate.DecrementNetworkOperations();
}
public override void DidStartDownloadingImage(TIPImageFetchOperation op, NSUrl url)
{
AppDelegate.IncrementNetworkOperations();
}
public void ImageFetchOperationDidUpdateProgress(TIPImageFetchOperation op, float progress)
{
Debug.WriteLine($"...progress ({progress:0.000})...");
progressView.SetProgress(progress, true);
}
public void ImageFetchOperationWillAttemptToLoad(TIPImageFetchOperation op, TIPImageLoadSource source)
{
Debug.WriteLine($"...attempting load from next source: {source}...");
}
public void ImageFetchOperationDidStart(TIPImageFetchOperation op)
{
Debug.WriteLine("starting Zoom fetch...");
}
