pass paramter to button listener

Ref :  http://wangshifuola.blogspot.tw/2012/03/androidlistviewbutton.html



public class lv_BtnAdapter extends BaseAdapter {

private ArrayList<HashMap<String, Object>> mAppList;
private LayoutInflater mInflater;
private Context mContext;
private String[] keyString;
private int[] valueViewID;

private ItemView itemView;

private class ItemView {
ImageView ItemImage;
TextView ItemName;
TextView ItemInfo;
Button ItemButton;
}

public lv_BtnAdapter(Context c, ArrayList<HashMap<String, Object>> appList, int resource, String[] from, int[] to) {
mAppList = appList;
mContext = c;
mInflater = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
keyString = new String[from.length];
valueViewID = new int[to.length];
System.arraycopy(from, 0, keyString, 0, from.length);
System.arraycopy(to, 0, valueViewID, 0, to.length);
}

@Override
public int getCount() {
// TODO Auto-generated method stub
//return 0;
return mAppList.size();
}

@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
//return null;
return mAppList.get(position);
}

@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
//return 0;
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
//return null;

if (convertView != null) {
itemView = (ItemView) convertView.getTag();
} else {
convertView = mInflater.inflate(R.layout.adapter_button, null);
itemView = new ItemView();
itemView.ItemImage = (ImageView)convertView.findViewById(valueViewID[0]);
itemView.ItemName = (TextView)convertView.findViewById(valueViewID[1]);
itemView.ItemInfo = (TextView)convertView.findViewById(valueViewID[2]);
itemView.ItemButton = (Button)convertView.findViewById(valueViewID[3]);
convertView.setTag(itemView);
}

HashMap<String, Object> appInfo = mAppList.get(position);
if (appInfo != null) {

int mid = (Integer)appInfo.get(keyString[0]);
String name = (String) appInfo.get(keyString[1]);
String info = (String) appInfo.get(keyString[2]);
int bid = (Integer)appInfo.get(keyString[3]);
itemView.ItemName.setText(name);
itemView.ItemInfo.setText(info);
itemView.ItemImage.setImageDrawable(itemView.ItemImage.getResources().getDrawable(mid));
itemView.ItemButton.setBackgroundDrawable(itemView.ItemButton.getResources().getDrawable(bid));
itemView.ItemButton.setOnClickListener(new ItemButton_Click(position));
// 把position 傳進去
}

return convertView;
}

class ItemButton_Click implements OnClickListener {
private int position;

ItemButton_Click(int pos) {
position = pos;
}

@Override
public void onClick(View v) {
int vid=v.getId();
if (vid == itemView.ItemButton.getId())
Log.v("ola_log",String.valueOf(position) );
}
}
}