AutoCompleteTextView with SimpleAdapter

While I was messing with AutoCompleteTextView, I wanted to specify my own Adapter for it.
I have created a custom adapter which extends SimpleAdapter and implements Filterable for filtering capabilities.

There were no problems till showing the filtered results to the user. I could not be able display the filtered results on the UI as a drop down list attached to the auto complete text. Then I needed to decompile the source code of AutoCompleteTextView.class and learnt how it works.

Here is my example;

public class CountrySimpleAdapter extends SimpleAdapter implements Filterable  {

 private ArrayList‹HashMap‹String, String›› mAllData, mDataShown;
 
 public CountrySimpleAdapter(Context context, List data, int resource,
   String[] from, int[] to) {
  super(context, data, resource, from, to);
  mDataShown = (ArrayList‹HashMap‹String, String››) data;
  mAllData = (ArrayList‹HashMap‹String, String››) mDataShown.clone();
 }

 @Override
 public Filter getFilter() {
  Filter nameFilter = new Filter(){

   @Override
   public String convertResultToString(Object resultValue) {
    return ((HashMap‹String, String›)(resultValue)).get(Country.NAME);
   }

   @Override
   protected FilterResults performFiltering(CharSequence constraint) {
    if(constraint != null)
    {
     ArrayList‹HashMap‹String, String›› tmpAllData = mAllData;
     ArrayList‹HashMap‹String, String›› tmpDataShown = mDataShown;
     tmpDataShown.clear();  
     for(int i = 0; i ‹ tmpAllData.size(); i++)
     {
      if(tmpAllData.get(i).get(Country.NAME).toLowerCase().startsWith(constraint.toString().toLowerCase()))
      {
       tmpDataShown.add(tmpAllData.get(i));
      }
     }

     FilterResults filterResults = new FilterResults();
     filterResults.values = tmpDataShown;
     filterResults.count = tmpDataShown.size();
     return filterResults;
    }
    else
    {
     return new FilterResults();
    }
   }

   @Override
   protected void publishResults(CharSequence constraint,
     FilterResults results) {
    if(results != null && results.count › 0)
    {
     notifyDataSetChanged();
    }
   }};

   return nameFilter;
 }
}

I hope that there is going to be a better way to achieve this task in the upcoming SDKs.