Não consigo retornar a latitude e a longitude do registro selecionado no listview.

ListarVendasActivity.java

package br.com.dannydantasn.vendas;



import android.app.Activity;

import android.content.Context;

import android.content.Intent;

import android.database.Cursor;

import android.database.sqlite.SQLiteCursor;

import android.database.sqlite.SQLiteDatabase;

import android.os.Bundle;

import android.view.View;

import android.widget.AdapterView;

import android.widget.ListView;

import android.widget.SimpleCursorAdapter;

import br.com.dannydantasn.vendas.R;



public class ListarVendasActivity extends Activity{



	  @Override

	    public void onCreate(Bundle savedInstanceState) {

	        super.onCreate(savedInstanceState);

	        setContentView(R.layout.listar_vendas);

	        

	        SQLiteDatabase db = openOrCreateDatabase("vendas.db", Context.MODE_PRIVATE, null);

	        

	        ListView ltwVendas = (ListView)findViewById(R.id.ltwVendas);

	        

	        

	        Cursor cursor = db.rawQuery("SELECT vendas._id, vendas.preco, vendas.la, vendas.lo, produtos.nome FROM vendas INNER JOIN produtos on produtos._id = vendas.produto", null);

	        

	        String[] from = { "_id", "preco", "nome", "la", "lo"};

	        int[] to = {R.id.txvlID, R.id.txvlPreco, R.id.txvlNome, R.id.txvLa, R.id.txvLo};

	        

	        SimpleCursorAdapter ad = new SimpleCursorAdapter(getBaseContext(), R.layout.model_listar, cursor, from, to);

	        

	        ltwVendas.setAdapter(ad);

	        

	        ltwVendas.setOnItemClickListener(new AdapterView.OnItemClickListener() {



				public void onItemClick(AdapterView ad, View v,

						int position, long id) {

					

					SQLiteCursor c = (SQLiteCursor)ad.getAdapter().getItem(position);

					Intent it = new Intent(getBaseContext(), MapShowActivity.class);

					it.putExtra("latitude", c.getDouble(c.getColumnIndex("la")));

					it.putExtra("longitude", c.getDouble(c.getColumnIndex("lo")));

					startActivity(it);

				}

	        });

	        

	        

	        

	  }

}

package br.com.dannydantasn.vendas;



import com.google.android.gms.maps.CameraUpdateFactory;

import com.google.android.gms.maps.GoogleMap;

import com.google.android.gms.maps.SupportMapFragment;

import com.google.android.gms.maps.model.LatLng;

import com.google.android.gms.maps.model.MarkerOptions;

import android.os.Bundle;

import android.support.v4.app.FragmentActivity;



public class MapShowActivity extends FragmentActivity {



	//como retornar latitude e longitude do registro selecionado?

	private LatLng location = new LatLng(-23.648344,-46.798884);



	private GoogleMap map;



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.mapa);



		map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();



		MarkerOptions marcardor1 = new MarkerOptions();

		marcardor1.position(location);

		marcardor1.title("RL System - A sabedoria está em aprender!");

		map.addMarker(marcardor1);



		map.moveCamera(CameraUpdateFactory.newLatLngZoom(location, 20));



		map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);

	}

}

Detalhe, tentei retornar com Intent, mas não tive sucesso.

Funcionou, usando o exemplo de outro post do forum.

MapShowActivity.java CORRIGICO

package br.com.dannydantasn.vendas;



import com.google.android.gms.maps.CameraUpdateFactory;

import com.google.android.gms.maps.GoogleMap;

import com.google.android.gms.maps.SupportMapFragment;

import com.google.android.gms.maps.model.LatLng;

import com.google.android.gms.maps.model.MarkerOptions;



import android.content.Intent;

import android.os.Bundle;

import android.support.v4.app.FragmentActivity;



public class MapShowActivity extends FragmentActivity {



	private LatLng location;	



	private GoogleMap map;



	@Override

	protected void onCreate(Bundle savedInstanceState) {

		super.onCreate(savedInstanceState);

		setContentView(R.layout.mapa);



	    Intent it = getIntent();

	    double latitude =  it.getDoubleExtra("latitude",0);

	    double longitude =  it.getDoubleExtra("longitude",0);

	    

	    location = new LatLng(latitude, longitude);



		map = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map)).getMap();



		MarkerOptions marcardor1 = new MarkerOptions();

		marcardor1.position(location);

		marcardor1.title("RL System - A sabedoria está em aprender!");

		map.addMarker(marcardor1);



		map.moveCamera(CameraUpdateFactory.newLatLngZoom(location, 20));



		map.animateCamera(CameraUpdateFactory.zoomTo(10), 2000, null);

	}

}