Reset carousel scrolling position

Hello! Thanks for the great library!

I have a nested custom Carousel and I need to reset it to the initial position after refreshing the content. I’m using the version 2.19.0 and I load the models in the buildModels() like this

new OfferCarouselModel_()
                .id("offer")
                .padding(carouselPadding)
                .numViewsToShowOnScreen(1.1F)
                .models(generatePopularOfferModels())
                .addIf(!offersList.isEmpty(), this);

and when I need to refresh the content I clear the list in the controller, set the new data and then requestModelBuild().

Everything works fine, but if I scrolled through the carousel before refreshing its content it’ll be at the old position, not at the first one. The Carousel class it’s really simple

@ModelView(saveViewState = true, autoLayout = Size.MATCH_WIDTH_WRAP_HEIGHT)
public class OfferCarousel extends Carousel {
    private static final int SPAN_COUNT = 1;
    private static SnapHelperFactory offerCarouselSnapHelper =
            new SnapHelperFactory() {
                @Override
                @NonNull
                public SnapHelper buildSnapHelper(Context context) {
                    return new PagerSnapHelper();
                }
            };

    public OfferCarousel(Context context) {
    super(context);
    }

    @NonNull
    @Override
    protected LayoutManager createLayoutManager() {
        return new GridLayoutManager(getContext(), SPAN_COUNT, LinearLayoutManager.HORIZONTAL, false);
    }

    @Override
    protected SnapHelperFactory getSnapHelperFactory() {
        return offerCarouselSnapHelper;
    }

}

Am I missing something? Thank you!

[elihart]

try posting the call to view.scrollToPosition(0); - when you update a carousel’s contents the model building is posted to the next frame, just like a normal EpoxyController requestModelBuild call

[AgneseBussone]

I tried different things, but the only one that seems to work in all my use cases is the following

        if (resetOfferCarouselPosition) {
            BoundViewHolders boundViewHolders = getAdapter().getBoundViewHolders();
            EpoxyModel<?> model = getAdapter().getModelById(offerCarouselId);
            if (model != null) {
                EpoxyViewHolder holder = boundViewHolders.getHolderForModel(model);
                if (holder != null) {
                    ((OfferCarousel) holder.itemView).scrollToPosition(0);
                    resetOfferCarouselPosition = false;
                }
            }
        }

at the end of the buildModels(). Is there a better solution?