How do load a image stored locally in byte array using FFImageLoading for Xamarin?

Question

I need to be able use FFImageLoading.ImageService to load a byte array I decoded from an image earlier, into a FFImageLoading.Views.ImageViewAsync object. The method ImageService.Instance.LoadImage(IImageLoaderTask task) seems to be the way but I have no idea how to set up an object of that interface and I can't find any references to using this type object on the source website.

How to load a byte[] into a ImageViewAsync object?

Answer 1

Since you already have a byte[] you could you this with the LoadStream method.

Something like:

ImageService.Instance
            .LoadStream (GetStreamFromImageByte)
            .Into (imageView);

And this is the method to do the actual work.

Task<Stream> GetStreamFromImageByte (CancellationToken ct)
{
    //Here you set your bytes[] (image)
    byte [] imageInBytes = null;

    //Since we need to return a Task<Stream> we will use a TaskCompletionSource>
    TaskCompletionSource<Stream> tcs = new TaskCompletionSource<Stream> ();

    tcs.TrySetResult (new MemoryStream (imageInBytes));

    return tcs.Task;
}

This should work.