ListAdapter For NavigationItem in Android

NavigationListAdapter.java

public class NavigationListAdapter extends ArrayAdapter<NavigationItem> {

    private Context mContext;
    private ArrayList<NavigationItem> mItems;
    private LayoutInflater mLayoutInflater;

    public NavigationListAdapter(Context context, ArrayList<NavigationItem> items) {
        super(context, 0, items);
        mContext = context;
        mItems = items;
        mLayoutInflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    }

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        final ViewHolder viewHolder;
        final NavigationItem navigationItems = mItems.get(position);

        if(navigationItems != null) {
            if(convertView == null) {
                convertView = mLayoutInflater.inflate(R.layout.list_item_navigation, null);

                viewHolder = new ViewHolder();

                viewHolder.tvTitle = (TextView)convertView.findViewById(R.id.tvTitle);
                viewHolder.ivIcon = (ImageView)convertView.findViewById(R.id.ivIcon);

                convertView.setTag(viewHolder);
            } else {
                viewHolder = (ViewHolder) convertView.getTag();
            }

            viewHolder.tvTitle.setText(navigationItems.getTitle());
            viewHolder.ivIcon.setImageDrawable(navigationItems.getIcon());
        }

        return convertView;
    }

    static class ViewHolder {
        TextView tvTitle;
        ImageView ivIcon;
    }
}