寒假学习日报28

public class CostListAdapter extends BaseAdapter {

    private List<CostBean> mList;
    private Context mContext;
    private LayoutInflater mLayoutInflater;

    public CostListAdapter(Context context, List<CostBean> list) {
        mContext = context;
        mList = list;
        mLayoutInflater = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return mList.size();
    }

    @Override
    public Object getItem(int position) {
        return mList.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if(convertView == null){
            viewHolder = new ViewHolder();
            convertView = mLayoutInflater.inflate(R.layout.list_item, null);
            viewHolder.mTvCostTitle = (TextView) convertView.findViewById(R.id.tv_title);
            viewHolder.mTvCostDate = (TextView)convertView.findViewById(R.id.tv_date);
            viewHolder.mTvCostMoney =(TextView) convertView.findViewById(R.id.tv_cost);
            convertView.setTag(viewHolder);
        }else{
            viewHolder = (ViewHolder) convertView.getTag();
        }
        CostBean bean = mList.get(position);
        viewHolder.mTvCostTitle.setText(bean.costTitle);
        viewHolder.mTvCostDate.setText(bean.costDate);
        viewHolder.mTvCostMoney.setText(bean.costMoney);
        return convertView;
    }

    private static class ViewHolder{
        public TextView mTvCostTitle;
        public TextView mTvCostDate;
        public TextView mTvCostMoney;
    }
}