Refreshing and scrolling will cause an exception. about ultimaterecyclerview HOT 4 CLOSED

    override fun onActivityCreated(p0: Bundle?) {
        ..
        mRecycler.setDefaultOnRefreshListener({ doCollectionLoad(true) })
    }

    private fun doCollectionLoad(p0: Boolean) {
        val nAdapter = (mRecycler.getAdapter() as AbsViewHolderAdapter<*>)
        nAdapter.setNotifyOnChange(false)
        nAdapter.clear()

        if (!p0) {
            mContainer.setViewState(MultiStateView.ViewState.LOADING)
        }

        (getActivity() as MainActivity)
                .getServiceAttachedOf()
                .getModule()
                .getResolver()
                .getFeaturedPlaylists(mRecycler.getAdapter().getItemCount(), LIMIT_PER_ACTION)
                .subscribeOn(Schedulers.newThread())
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(
                        { p2 -> doCollectionAdd(p2, p0) },
                        { p2 -> doCollectionAdd(null, p0) })
    }

    private fun doCollectionAdd(p0: UeCollection<UePlaylist>?, p1: Boolean) {
        val nAdapter = (mRecycler.getAdapter() as AbsViewHolderAdapter<*>)

        if (p0 != null) {
            mPageLimit = p0.mTotal
            nAdapter.addAll(p0.mArray)
            nAdapter.setNotifyOnChange(true)
            nAdapter.notifyDataSetChanged()
        } else {
            nAdapter.addAll(emptyList<UePlaylist>())
        }
        mContainer.setViewState(MultiStateView.ViewState.CONTENT)
    }