Add callback to image loading?

[cxzhang2]

As far as I know there is no way to provide a "loading finished" callback to the framework. Assuming this is not a deliberate design decision, can we consider adding a method to the BitmapLoader interface that accepts a callback?

i.e. something to the effect of:

public interface BitmapLoader {
   void load(@Nullable Object model, @NonNull ImageView view);
   void load(@Nullable Object model, @NonNull ImageView view, ScissorCallback callback);
}

public interface ScissorCallback {
    void onComplete();
}

PicassoBitmapLoader / GlideBitmapLoader's implementations can then forward events generated from their respective libraries to ScissorCallback's onComplete(). This is obviously not a complete solution as we're losing a lot of information from the library callbacks but it's a start and super simple to implement.

[nathanjones]

This would be really useful.

Downloading from Google Drive or another remote sources can take a while and you should really show some kind of loading indicator.

[tildedave]

Hi there, closing this as it's pretty old. We aren't planning on supporting this feature at this moment.