viaLondon的部落格

private ListView listView;
List<ExchangeRate> exchangeRateList = new ArrayList<ExchangeRate>();
private MyAdapter adapter;
listView = (ListView) findViewById(R.id.listView);
exchangeRateList.add(new ExchangeRate("幣別", "Currency", "現金買入", "現金賣出", "即期買入", "即期賣出"));
exchangeRateList.add(new ExchangeRate("美金", "USD", "33.26500", "33.80700", "33.56500", "33.66500"));
adapter = new MyAdapter(MainActivity.this, exchangeRateList);
listView.setAdapter(adapter);
		

public class MyAdapter extends BaseAdapter{
    private LayoutInflater myInflater;
    private List<ExchangeRate> exchangeRates;
    public MyAdapter(Context context,List<ExchangeRate> exchangeRate){
        myInflater = LayoutInflater.<em>from</em>(context);
        this.exchangeRates = exchangeRate;
    }
    /*private view holder class*/
private class ViewHolder {
        TextView txtCur_zh;
        TextView txtCur_en;
        TextView txtCash_buy;
        TextView txtCash_sell;
        TextView txtSpot_buy;
        TextView txtSpot_sell;
        public ViewHolder(TextView txtCur_zh, TextView txtCur_en, TextView txtCash_buy, TextView txtCash_sell, TextView txtSpot_buy, TextView txtSpot_sell){
            this.txtCur_zh = txtCur_zh;
            this.txtCur_en = txtCur_en;
            this.txtCash_buy = txtCash_buy;
            this.txtCash_sell = txtCash_sell;
            this.txtSpot_buy = txtSpot_buy;
            this.txtSpot_sell = txtSpot_sell;
        }
    }
    @Override
public int getCount() {
        return exchangeRates.size();
    }
    @Override
public Object getItem(int arg0) {
        return exchangeRates.get(arg0);
    }
    @Override
public long getItemId(int position) {
        return exchangeRates.indexOf(getItem(position));
    }
    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder = null;
        if (convertView==null) {
            convertView = myInflater.inflate(R.layout.list_cell, null);
            holder = new ViewHolder(
                    (TextView) convertView.findViewById(R.id.currency_zh),
                    (TextView) convertView.findViewById(R.id.currency_en),
                    (TextView) convertView.findViewById(R.id.cash_buy),
                    (TextView) convertView.findViewById(R.id.cash_sell),
                    (TextView) convertView.findViewById(R.id.spot_buy),
                    (TextView) convertView.findViewById(R.id.spot_sell)
            );
            convertView.setTag(holder);
        }else{
            holder = (ViewHolder) convertView.getTag();
        }
        ExchangeRate exchangeRate = (ExchangeRate)getItem(position);    
        holder.txtCur_zh.setText(exchangeRate.getCurrency_zh());
        holder.txtCur_en.setText(exchangeRate.getCurrency_en());
        holder.txtCash_buy.setText(exchangeRate.getCash_buy());
        holder.txtCash_sell.setText(exchangeRate.getCash_sell());
        holder.txtSpot_buy.setText(exchangeRate.getSpot_buy());
        holder.txtSpot_sell.setText(exchangeRate.getSpot_sell());
        return convertView;
    }
}