android Gallery有关问题

android Gallery问题
我想在Gallery显示图片的时候，用一个TextView显示当前图片是第几张，怎么实现？？

------解决方案--------------------
Gallery g=(Grllery)findViewById(R.id.***);
 g.setOnItemSelectedListener(new OnItemSelectedListener()
{

@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(Gallery1.this, "" + position, Toast.LENGTH_SHORT).show();
}

@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub

}});