NotifyDataSetChanged And BaseAdapter Listview isnt Refreshing

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http://stackoverflow.com – I am trying to rebind again the listview using NotifyDataSetChanged but it is not refreshing my listview. Could you help me with this one? public class OrderListAdapter extends BaseAdapter { public View getView(int position, View convertView, ViewGroup parent) { View vi=convertView; if (convertView == null) { vi = inflater.inflate(R.layout.order_list_style, null); tvmainOrder= (TextView)vi.findViewById(R.id.tvMainOrder); // titleOrder tvPrice = (TextView)vi.findViewById(R.id.tvOrderPrice); // price tvItemID = (TextView)vi.findViewById(R.id.tv (HowTos)