Data binding cannot find setter for attribute 'ael_expanded' about expandablelayout HOT 5 CLOSED

class ViewModel extends BaseObservable{
    
   @BindingAdapter({"ael_expanded"})
    public static void setExpand(ExpandableRelativeLayout expandableRelativeLayout,
                                 boolean expanded){
        expandableRelativeLayout.setExpanded(expanded);
    }

    public boolean isExpand() {
        return expand;
    }

    public void setExpand(boolean expand) {
        this.expand = expand;
    }

    public View.OnClickListener onReadMoreClick(){
        return new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                setExpand(!isExpand()); //flip
                notifyChange();
            }
        };
    }

public void onBindViewHolder(BindingHolder holder, int position) {
        final ItemArticleBinding binding = holder.binding;
        holder.setIsRecyclable(false);
        binding.setAvm(new ArticlesViewModel(mResult.get(position), mContext));
        binding.itemArticlesExpandLayout.setInRecyclerView(true);
        binding.itemArticlesButton.setOnClickListener(new View.OnClickListener(){
            @Override
            public void onClick(View v) {
                onClickButton(binding.itemArticlesExpandLayout);
            }
        });
    }

   private void onClickButton(final ExpandableLayout expandableLayout){
        expandableLayout.toggle();
    }

@BindingAdapter("app:ael_expand")
public static void setExpanded(View v, boolean expanded){
    if(!(v instanceof ExpandableLayout))
        throw new RuntimeException("Invalid attribute, only allowed on ExpandableLayout");

    ExpandableLayout layout = (ExpandableLayout)v;
    if(expanded)
        layout.expand();
    else
        layout.collapse();
}