Как исправить вылет приложения при прокручивании recycler view?

Question

[dimasik100200]

Создал recycler view с header, однако при прокручивании приложения вылетает и появляется ошибка

java.lang.IndexOutOfBoundsException: Index: 4, Size: 4
                                                                                 at java.util.ArrayList.get(ArrayList.java:437)
                                                                                 at com.example.testapp147.adapter.RecyclerViewAdapter.onBindViewHolder(RecyclerViewAdapter.java:51)

logcat указывает на строчку 51

CardViewObject profiles = postArrayList.get(position);

Она находится в onBindViewHolder

@Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if (holder instanceof HeaderViewHolder) {
            HeaderViewHolder headerHolder = (HeaderViewHolder) holder;
            headerHolder.headerCity.setText("");
            headerHolder.headerCountry.setText("");
            headerHolder.headerTime.setText("");
            headerHolder.headerTemperature.setText("");
        } else if (holder instanceof ItemViewHolder) {
            CardViewObject profiles = postArrayList.get(position);
            ((ItemViewHolder) holder).avatar.setImageResource(profiles.getCardAvatar());
            ((ItemViewHolder) holder).name.setText(profiles.getCardName());
            ((ItemViewHolder) holder).location.setText(profiles.getCardLocation());
            ((ItemViewHolder) holder).cardImage.setImageResource(profiles.getCardImage());
            ((ItemViewHolder) holder).description.setText(profiles.getCardDescription());
        }
    }

Как исправить данную ошибку? Весь код адаптера скину в комменты.

Comments

[dimasik100200]

public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {

    private static final int TYPE_HEADER = 0;
    private static final int TYPE_ITEM = 1;

    private HomeFragment mContext;
    private ArrayList<CardViewObject> postArrayList;

    public RecyclerViewAdapter (HomeFragment mContext, ArrayList<CardViewObject> postArrayList){
        this.mContext=mContext;
        this.postArrayList=postArrayList;
    }

    @Override
    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
        if (viewType == TYPE_ITEM) {
            //Inflating recycle view item layout
            View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_card, parent, false);
            return new ItemViewHolder(itemView);
        } else if (viewType == TYPE_HEADER) {
            //Inflating header view
            View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.information_of_day, parent, false);
            return new HeaderViewHolder(itemView);
        } else return null;
    }

    @Override
    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
        if (holder instanceof HeaderViewHolder) {
            HeaderViewHolder headerHolder = (HeaderViewHolder) holder;
            headerHolder.headerCity.setText("");
            headerHolder.headerCountry.setText("");
            headerHolder.headerTime.setText("");
            headerHolder.headerTemperature.setText("");
        } else if (holder instanceof ItemViewHolder) {
            CardViewObject profiles = postArrayList.get(position);
            ((ItemViewHolder) holder).avatar.setImageResource(profiles.getCardAvatar());
            ((ItemViewHolder) holder).name.setText(profiles.getCardName());
            ((ItemViewHolder) holder).location.setText(profiles.getCardLocation());
            ((ItemViewHolder) holder).cardImage.setImageResource(profiles.getCardImage());
            ((ItemViewHolder) holder).description.setText(profiles.getCardDescription());
        }
    }

    @Override
    public int getItemCount() {
        return postArrayList.size() + 1;
    }

    @Override
    public int getItemViewType(int position) {
        if (isPositionHeader(position))
            return TYPE_HEADER;
        return TYPE_ITEM;
    }

    private boolean isPositionHeader(int position) {
        return position == 0;
    }

    public class ItemViewHolder extends RecyclerView.ViewHolder {

        public TextView name, location, description;
        public ImageView avatar, cardImage;

        public ItemViewHolder(View view) {
            super(view);
            avatar = (ImageView)itemView.findViewById(R.id.post_avatar);
            name = (TextView) itemView.findViewById(R.id.user_name);
            location = (TextView) itemView.findViewById(R.id.card_location);
            cardImage = (ImageView) itemView.findViewById(R.id.card_image);
            description = (TextView) itemView.findViewById(R.id.card_text);
        }
    }

    public class HeaderViewHolder extends RecyclerView.ViewHolder {

        public TextView headerCity, headerCountry, headerTime, headerTemperature;
        public ImageView headerImage;

        public HeaderViewHolder(View view) {
            super(view);
            headerImage = (ImageView)itemView.findViewById(R.id.home_header_image);
            headerCity = (TextView) itemView.findViewById(R.id.home_header_city);
            headerCountry = (TextView) itemView.findViewById(R.id.home_header_country);
            headerTime = (TextView) itemView.findViewById(R.id.home_header_time);
            headerTemperature = (TextView) itemView.findViewById(R.id.home_header_temperature);
        }
    }
}

Answer 1

[Александр Юдаков]

CardViewObject profiles = postArrayList.get(position - 1);

Comments

[dimasik100200]

спасибо