@Override
    public void onResourceReady(Bitmap resource, GlideAnimation<? super Bitmap> glideAnimation) {
        this.remoteViews.setImageViewBitmap(this.viewId, resource);
        this.update();
    }
Updates the Notification after the Bitmap resource is loaded.
core/src/main/java/com/bumptech/glide/request/target/NotificationTarget.java